Dianas Beach Weather Forecast
- 10
- 17
Mostly sunny
- 8
- 15
Partly cloudy
- 4
- 19
Sunny
- 5
- 16
Partly cloudy
- 5
- 21
Sunny
- 5
- 20
Sunny
- 6
- 20
Partly cloudy
Today 6 Sep St Helens
Slight chance of a shower in the early morning. Mostly sunny day. Winds southeast to southwesterly 20 to 30 km/h tending east to northeasterly 15 to 20 km/h in the middle of the day then turning north to northwesterly in the late afternoon.
Upper East Coastal Waters
St Helens Point to Wineglass Bay- Wind
- Southerly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds shifting north to northeasterly 15 to 20 knots in the early afternoon then tending north to northwesterly in the evening.
- Seas
- 2 to 3 metres, decreasing to 1 metre around midday, then increasing to 1 to 1.5 metres later in the evening.
- 1st Swell
- Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore.
- Weather
- Partly cloudy. 60% chance of showers.
Dianas Beach Temperature Statistics View More
September Temperature
St Helens Aerodrome (5km)
Lowest 4 September, 2026
6.1 °CAverage September
12.5 °CHighest 1 September, 2026
17.3 °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