Australian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025
Forecast
Williamtown (32.8068°S, 151.8442°E, 18m AMSL) Williamtown,NSW set as my default location ›
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Seven day forecast
Williamtown 7 day forecast
Today: Sunny morning. Slight chance of a shower in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Winds W/NW 20 to 30 km/h tending W/SW 15 to 20 km/h in the middle of the day then becoming light in the evening. Overnight temperatures falling to between 19 and 24 with daytime temperatures reaching 35 to 42.
Forecast for Williamtown (32.8068°S, 151.8442°E, 18m AMSL) Fri Sat Sun Mon Tue Wed Thu Summary 
Minimum 22° 21° 21° 24° 21° 20° 19° Maximum 37° 30° 37° 32° 29° 29° 25° Chance of rain 30% 20% 30% 40% 50% 40% 80% Likely amount < 1mm < 1mm < 1mm 1-5mm < 1mm < 1mm 1-5mm UV index Extreme Extreme Extreme Extreme Extreme Extreme Extreme Fire Danger Rating High High High High - - - Frost risk Nil Nil Nil Nil Nil Nil Nil 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm 9am 3pm Wind speed 17
(km/h)16
(km/h)12
(km/h)20
(km/h)9
(km/h)19
(km/h)12
(km/h)20
(km/h)10
(km/h)20
(km/h)10
(km/h)22
(km/h)18
(km/h)28
(km/h)Wind direction WNW SE SW ESE WNW NNE W ESE S ESE SSE ESE S SSE Relative humidity 45% 36% 71% 60% 62% 34% 61% 64% 75% 58% 71% 56% 75% 66% Dew point 18°C 17°C 20°C 20°C 21°C 17°C 20°C 21°C 20°C 18°C 18°C 18°C 18°C 16°C First light 5:11am 5:12am 5:12am 5:13am 5:13am 5:14am 5:14am Sunrise 5:40am 5:40am 5:41am 5:41am 5:42am 5:42am 5:43am Sunset 7:59pm 7:59pm 8:00pm 8:00pm 8:01pm 8:01pm 8:02pm Last light 8:28pm 8:28pm 8:29pm 8:29pm 8:30pm 8:30pm 8:30pm -
Warnings
Weather Warnings
Thu 2:25pm UTC Severe weather advice NSWThu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025Thu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025Thu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025Thu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025Thu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025Thu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025Thu 2:25pm UTC Severe weather advice NSWAustralian Government Bureau of Meteorology
New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Heatwave Warning
Issued at 02:25 PM EDT on Thursday 18 December 2025
Valid for Thursday 18 December 2025 to Sunday 21 December 2025
Warning for the following areas:
Mid North Coast, Illawarra, South Coast and Snowy Mountains
Warning for the following areas:
Northern Rivers, Hunter, Northern Tablelands, Metropolitan, Central Tablelands, Southern Tablelands, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Riverina
Safety Advice:
Extreme heatwaves can be dangerous for everyone.
Severe heatwaves can be dangerous for many people, especially older people, babies, children, pregnant and breastfeeding women, people with medical conditions and people who are unwell.
Seek a place to keep cool, such as your home, a library, community centre or shopping centre.
Close your windows and draw blinds, curtains or awnings early in the day to keep the heat out of your home.
If available, use fans or air-conditioners to keep cool.
In inland and northern districts expect maximum temperatures in the high thirties to low forties and overnight minimum temperatures in the high teens to mid twenties. Heatwave conditions are expected to increase over the weekend before easing mid to late next week.
About the southern coast and ranges maximum temperatures in the high twenties to high thirties. Overnight minimum temperatures generally in the mid to high teens. Cooler temperatures are expected to gradually develop from the south with heatwave conditions in these areas expected to peak at the end of this week and then begin to ease later over the weekend.
Locations likely to be impacted include Armidale, Camden, Campbelltown, Grafton, Goulburn, Hornsby, Lismore, Liverpool, Orange and Richmond.
The next heatwave warning will be issued by 3:00pm EDT on Friday 19 December 2025For extended forecasts and greater detail visit weather zone° -
Sunrise and sunset times
Sunrise / Sunset for Williamtown (32.8068°S, 151.8442°E, 18m AMSL) First light Sunrise Sunset Last light Moon rise Moon set Moon phase New moon First quarter Full moon Last quarter 5:11am EDT 5:40am EDT 7:59pm EDT 8:28pm EDT 4:26am EDT 7:33pm EDT 
Waning crescent
New moon Dec 20 First quarter Dec 28 Full moon Jan 03 Last quarter Jan 11 Williamtown sun & moon times
FridayFirst light5:11am
EDTSunrise5:40am
EDTSunset7:59pm
EDTLast light8:28pm
EDTMoon phase
Next OccurrenceMoon riseFri
4:26am
EDTMoon setFri
7:33pm
EDTNew moonNew moon Sat
Dec 20
First quarterFirst quarter Sun
Dec 28
Full moonFull moon Sat
Jan 03
Last quarterLast quarter Sun
Jan 11
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Temperature for next 5 days
0 Friday Friday 37 1 Saturday Saturday 30 2 Sunday Sunday 37 3 Monday Monday 32 4 Tuesday Tuesday 29 5 Wednesday Wednesday 29 6 Thursday Thursday 25 7 Thursday Thursday 25 -
Rain for next 5 days
0 Friday Friday 0 1 Saturday Saturday 0 2 Sunday Sunday 0 3 Monday Monday 5 4 Tuesday Tuesday 0 5 Wednesday Wednesday 0 6 Thursday Thursday 5 7 Thursday Thursday 5
