Boston Weather Forecast
- 7
- 19
Showers increasing
- 9
- 17
Shower or two
- 7
- 18
Possible shower
- 8
- 16
Partly cloudy
- 7
- 17
Cloudy
- 6
- 18
Possible shower
- 9
- 18
Showers
Today 18 Aug Port Lincoln
Becoming cloudy. Very high chance of showers, most likely in the late afternoon and evening. The chance of a thunderstorm in the evening. Winds northeasterly 15 to 25 km/h tending northerly 20 to 25 km/h in the late afternoon then tending northwesterly in the late evening.
Spencer Gulf Coastal Waters
- Wind
- North to northeasterly 15 to 20 knots tending north to northwesterly in the evening. Winds reaching up to 25 knots near the Yorke Peninsula coast in the late evening.
- Seas
- Around 1 metre, increasing to 1 to 1.5 metres by early evening.
- 1st Swell
- South to southwesterly below 1 metre, increasing to 1 to 1.5 metres south of Port Neill to Port Victoria.
- Weather
- Becoming cloudy. 90% chance of showers. The chance of a thunderstorm south of Cowell to Wallaroo in the evening.
- Weather Situation
- A large blocking high pressure system persists over the Tasman Sea. An upper level disturbance responsible for precipitation over central and eastern parts will weaken today as a weakening cold front moves across western parts today and across the southeast on Wednesday. A high pressure ridge is expected to develop over South Australia from Wednesday afternoon with weak troughs clipping the southeast in a broad westerly flow on Thursday and Friday.
Boston Temperature Statistics View More
August Temperature
Port Lincoln Airport (6km)
Lowest 1 August, 2026
2.6 °CAverage August
12.1 °CHighest 8 August, 2026
19.7 °C
Climate (2021–2026)
Port Lincoln Airport (6km)
Average Low 2021–2026
11.5 °CAverage 2021–2026
15.8 °CAverage High 2021–2026
21.3 °C