Sloop Reef Weather Forecast
- 5
- 16
Shower or two
- 9
- 17
Showers increasing
- 7
- 14
Shower or two
- 7
- 17
Possible shower
- 6
- 15
Shower or two
- 3
- 17
Partly cloudy
- 4
- 19
Mostly sunny
Today 18 Sep St Helens
Partly cloudy. Medium chance of showers, most likely this evening. Light winds becoming north to northwesterly 25 to 35 km/h in the morning.
East of Flinders Island Coastal Waters
North Flinders Island to St Helens Point- Wind
- Northwesterly 15 to 20 knots turning northerly 20 to 25 knots in the evening. Winds reaching up to 30 knots in the late evening.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres during the afternoon, then increasing to 1.5 to 2 metres later in the evening.
- 1st Swell
- Southerly 1 to 1.5 metres, decreasing to around 1 metre around midday.
- Weather
- Partly cloudy.
- Weather Situation
- A westerly airstream over Tasmania tends northwesterly today, as a high pressure system over eastern Victoria moves eastwards over the northern Tasman Sea. A series of cold fronts are expected to pass over Tasmania from early Friday morning.
Sloop Reef Temperature Statistics View More
September Temperature
St Helens Aerodrome (14km)
Lowest 5 September, 2025
1 °CAverage September
11.2 °CHighest 15 September, 2025
20.8 °C
Climate (2020–Present)
St Helens Aerodrome (14km)
Average Low 2020–2025
9.4 °CAverage 2020–2025
13.3 °CAverage High 2020–2025
18.2 °C