Portsea Weather Forecast

Today 30 Dec
- 16
- 22
Windy
Wed 31 Dec
- 12
- 17
Partly cloudy
Thu 1 Jan
- 13
- 19
Partly cloudy
Fri 2 Jan
- 14
- 23
Partly cloudy
Sat 3 Jan
- 16
- 24
Partly cloudy
Sun 4 Jan
- 15
- 19
Cloudy
Mon 5 Jan
- 14
- 19
Partly cloudy

Today 30 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Wed 31 Dec
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Thu 1 Jan
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Fri 2 Jan
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sat 3 Jan
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Sun 4 Jan
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm
Mon 5 Jan
1. 2 am
2. 5 am
3. 8 am
4. 11 am
5. 2 pm
6. 5 pm
7. 8 pm
8. 11 pm

Today 30 Dec Mornington Peninsula

Cloudy. Winds westerly 20 to 30 km/h turning south to southwesterly 30 to 45 km/h in the afternoon.

Portsea Temperature Statistics View More

December Temperature

Avalon Airport (39km)

Lowest 20 August, 2025
-1.4 °C
Average 2025
14.6 °C
Highest 27 January, 2025
42.1 °C
Lowest 13 November, 2025
4.5 °C
Average November
14.4 °C
Highest 2 November, 2025
32.8 °C
Lowest 7 December, 2025
6.6 °C
Average December
16.7 °C
Highest 18 December, 2025
39.5 °C

Climate (2020–Present)

Avalon Airport (39km)

Take a look at our website widgetsAvailable free! Find Out More

Average Low 2020–2025
9.6 °C
Average 2020–2025
14.5 °C
Average High 2020–2025
20.4 °C

Get WillyWeather+ to remove ads