St Marys Weather Forecast
- 9
- 17
Showers increasing
- 9
- 16
Shower or two
- 5
- 16
Partly cloudy
- 4
- 15
Mostly sunny
- 1
- 16
Mostly sunny
- 7
- 16
Shower or two
- 5
- 14
Shower or two
Today 19 Aug East Coast
Partly cloudy. High chance of showers in the north, medium chance elsewhere. Winds northerly 20 to 30 km/h. Daytime maximum temperatures between 14 and 18.
St Marys Temperature Statistics View More
August Temperature
St Helens Aerodrome (28km)
Lowest 1 August, 2026
3 °CAverage August
10 °CHighest 13 August, 2026
19.2 °C
Climate (2021–2026)
St Helens Aerodrome (28km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
13.4 °CAverage High 2021–2026
18.3 °C