Tunnel Bay Weather Forecast
- 8
- 12
Showers
- 7
- 15
Possible shower
- 9
- 13
Shower or two
- 8
- 15
Mostly sunny
- 9
- 15
Mostly sunny
- 8
- 16
Mostly sunny
- 10
- 18
Showers
Today 26 Aug South East
Cloudy. High chance of showers, becoming less likely this afternoon. Snow falling above 1000 metres. Winds westerly 25 to 40 km/h tending southwesterly 30 to 45 km/h in the early morning then tending northwest to southwesterly 15 to 20 km/h in the late evening. Daytime maximum temperatures between 7 and 13.
South East Coastal Waters
Tasman Island to South East Cape- Wind
- South to southwesterly 20 to 30 knots, reaching up to 35 knots during the morning. Winds tending southeast to southwesterly 15 to 25 knots in the early afternoon then tending west to southwesterly 10 to 15 knots in the late evening.
- Seas
- 2 to 3 metres, decreasing to 1 to 1.5 metres by early evening, then decreasing to 1 metre later in the evening.
- 1st Swell
- Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.
- Weather
- Cloudy. 90% chance of showers.
- Weather Situation
- A broad low pressure system over Tasmania is expected to move away to the southeast during the morning. A high pressure system over South Australia is expected to extend a ridge over Tasmania later today, before moving to north of the state on Thursday. A cold front is expected to approach the southwest late Thursday, crossing during Friday. A high pressure system to the south of the Bight approaches the west during the weekend, extending a ridge to the north of Tasmania.
Tunnel Bay Temperature Statistics View More
August Temperature
Tasman Island (21km)
Lowest 23 August, 2026
6 °CAverage August
10 °CHighest 20 August, 2026
17.1 °C
Climate (2021–2026)
Tasman Island (21km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
11.6 °CAverage High 2021–2026
14.6 °C