Portland Weather Forecast, Dorset

Today 1 Dec South West England

A murky and wet start for most, as a weather system pushes northeastwards bringing widespread and prolonged outbreaks of rain, with heavy downpours and strong gusty winds likely. Conditions worst felt in the west, with coastal gales possible. Feeling mild. Maximum Temperature 13C.

Tonight 1 Dec South West England

Wet and windy weather persisting through the evening with further heavy downpours likely. Overnight, winds will gradually ease, with cloud and rain clearing to the northeast, though scattered showers feed into coastal regions thereafter, these blustery at times. Minimum Temperature 7C.

Tue 2 Dec South West England

A brighter start for many, though scattered showers continue for coastal regions. These becoming more frequent and widespread through the afternoon, with blustery and perhaps thundery downpours possible. Maximum Temperature 11C.

Wed 3 Dec South West England

Wednesday brings another day of sunny spells with occasional showers. Turning cloudy from the west overnight as the next weather system brings further rain into Thursday and Friday. Often breezy.

Thu 4 Dec South West England

Wednesday brings another day of sunny spells with occasional showers. Turning cloudy from the west overnight as the next weather system brings further rain into Thursday and Friday. Often breezy.

Fri 5 Dec South West England

Wednesday brings another day of sunny spells with occasional showers. Turning cloudy from the west overnight as the next weather system brings further rain into Thursday and Friday. Often breezy.

Sat 6 Dec South West England

Likely a continuation of the unsettled conditions seen for much of the week with further showers or some longer spells of rain affecting much of the country. On Saturday a frontal zone is expected to move east and this could bring a spell of locally heavy rain, particularly on hills exposed to the strong southerly winds. Behind this turning brighter but with showers, some of which could be heavy and thundery. Its possible we could then see yet more organised, locally heavy rain move across most areas on Monday. Generally temperatures will be close to average, but it will likely feel quite chilly in the often wet and breezy conditions. However we are unlikely to see much in the way of frost or fog in this unsettled spell.

Sun 7 Dec South West England

Likely a continuation of the unsettled conditions seen for much of the week with further showers or some longer spells of rain affecting much of the country. On Saturday a frontal zone is expected to move east and this could bring a spell of locally heavy rain, particularly on hills exposed to the strong southerly winds. Behind this turning brighter but with showers, some of which could be heavy and thundery. Its possible we could then see yet more organised, locally heavy rain move across most areas on Monday. Generally temperatures will be close to average, but it will likely feel quite chilly in the often wet and breezy conditions. However we are unlikely to see much in the way of frost or fog in this unsettled spell.

Portland Weather Forecast

Today 1 Dec South West England

Tonight 1 Dec South West England

Tue 2 Dec South West England

Wed 3 Dec South West England

Thu 4 Dec South West England

Fri 5 Dec South West England

Sat 6 Dec South West England

Sun 7 Dec South West England

Temperature Forecast Met Office

Temperature Real-Time

Dean Hill (Wiltshire) Radar

National Satellite

National Synoptic

Portland Temperature Statistics

December Temperature

Isle Of Portland (5km)

Lowest 8 January, 2025

Average 2025

Highest 15 August, 2025

Lowest 21 November, 2025

Average November

Highest 13 November, 2025

Lowest

Average December

Highest

Climate (2020–Present)

Isle Of Portland (5km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025