Dianas Beach Weather Forecast
- 9
- 17
Cloudy
- 9
- 16
Showers easing
- 6
- 17
Mostly sunny
- 4
- 17
Mostly sunny
- 8
- 17
Partly cloudy
- 5
- 18
Mostly sunny
- 5
- 19
Sunny
Today 24 Aug St Helens
Cloudy. Light winds.
Upper East Coastal Waters
St Helens Point to Wineglass Bay- Wind
- Northwesterly 10 to 15 knots, reaching up to 20 knots offshore.
- Seas
- Below 1 metre, increasing to 1 to 1.5 metres offshore.
- 1st Swell
- Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
- Weather
- Cloudy.
- Weather Situation
- A high pressure system lies well to the east of Tasmania, with a weak cold front forecast move to the south of the state today. A low pressure system over Victoria on Tuesday morning is expected to broaden and move south over Tasmania during the day, before moving away to the east on Wednesday morning. A high pressure system over South Australia is expected to extend a ridge over Tasmania later Wednesday, before moving to north of the state on Thursday. A cold front is expected to approach the southwest late Thursday, crossing during Friday.
Dianas Beach Temperature Statistics View More
August Temperature
St Helens Aerodrome (5km)
Lowest 23 August, 2026
2.5 °CAverage August
10.7 °CHighest 13 August, 2026
19.2 °C
Climate (2021–2026)
St Helens Aerodrome (5km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
13.4 °CAverage High 2021–2026
18.3 °C