Portland Harbour Weather Forecast
- 12
- 20
Sunny day
- 14
- 19
Sunny day
- 14
- 20
Sunny day
- 16
- 22
Sunny day
- 17
- 22
Partly cloudy
- 16
- 23
Sunny day
- 16
- 22
Sunny day
Today 16 Jun South West England
Any low cloud, patchy mist and fog lifting and clearing fairly readily in the morning to leave a fine day. Some lengthy sunny spells developing, and continuing this way into the afternoon. Light winds, and feeling warm in the sunshine. Maximum Temperature 21C.
Tonight 16 Jun South West England
Any cloud gradually melting away to leave some late sunshine for many. Staying dry overnight with fog patches developing inland under the clear skies. Generally mild but becoming locally cool in the countryside. Perhaps turning somewhat cloudier in Cornwall later. Minimum Temperature 8C.
Portland Harbour Temperature Statistics
June Temperature
Isle Of Portland (6km)
Lowest 8 June, 2025
11.8 °CAverage June
14.5 °CHighest 13 June, 2025
19.9 °C
Climate (2020–Present)
Isle Of Portland (6km)
Average Low 2020–2025
10.2 °CAverage 2020–2025
12.1 °CAverage High 2020–2025
14 °C