John Island Weather Forecast
- 12
- 18
Cloudy
- 8
- 23
Partly cloudy
- 13
- 27
Partly cloudy
- 12
- 19
Shower
- 10
- 19
Partly cloudy
- 11
- 17
Shower
- 11
- 18
Shower
Today 20 Sep South East Coastal
Cloudy. Medium chance of showers in the south, slight chance elsewhere. Winds west to southwesterly 15 to 25 km/h shifting east to southeasterly 15 to 20 km/h in the late afternoon. Daytime maximum temperatures between 18 and 21.
Esperance Coastal Waters
Bremer Bay to Israelite Bay- Wind
- South to southwesterly 15 to 20 knots turning east to southeasterly 10 to 15 knots in the late afternoon.
- Seas
- 1 to 2 metres, decreasing to 1 metre during the afternoon.
- 1st Swell
- Southwesterly 2 to 3 metres, increasing to 3 to 4 metres during the afternoon.
- Weather
- Partly cloudy.
- Weather Situation
- A trough moves east through the Southern Interior and Eucla districts before leaving the state this morning as a new ridge builds over the southwest. Later tomorrow another trough will build in the west moving eastward on Tuesday as a cold front passes to the south of the state.
John Island Temperature Statistics View More
September Temperature
Esperance (66km)
Lowest 2 September, 2026
7.7 °CAverage September
16.2 °CHighest 17 September, 2026
32.5 °C
Climate (2021–2026)
Esperance (66km)
Average Low 2021–2026
12.7 °CAverage 2021–2026
16.6 °CAverage High 2021–2026
22.3 °C