Trelan Weather Forecast, Cornwall TR12 6

Today 18 Dec South West England

The morning should start dry, but cloud will soon thicken with wet and potentially very windy weather sweeping across the region. The rain will become heavy, but it should turn more showery later. Winds remaining brisk. A mild day though. Maximum Temperature 13C.

Tonight 18 Dec South West England

The evening will begin cloudy with blustery showers. Showers should become confined towards western coasts overnight with clear periods developing. Remaining breezy, although this should prevent a frost from forming. Minimum Temperature 7C.

Fri 19 Dec South West England

Apart from a scattering of showers, mainly in the west, Friday promises to be a much drier and brighter day with sunny spells. Feeling cool due to the breeze though. Maximum Temperature 11C.

Sat 20 Dec South West England

After a mostly fine start, wet and windy weather will move eastwards across the region on Saturday. Sunday and Monday look cloudy with further patchy rain. The wind easing though.

Sun 21 Dec South West England

After a mostly fine start, wet and windy weather will move eastwards across the region on Saturday. Sunday and Monday look cloudy with further patchy rain. The wind easing though.

Mon 22 Dec South West England

After a mostly fine start, wet and windy weather will move eastwards across the region on Saturday. Sunday and Monday look cloudy with further patchy rain. The wind easing though.

Tue 23 Dec South West England

Unsettled conditions are likely to continue at first, with low pressure probably centred somewhere to the southwest of the UK, whilst high pressure becomes established to the northeast. This means a broadly easterly flow will become increasingly dominant through next week, whilst periods of rain or showers become increasingly confined to southern or southwestern parts. With time, high pressure is signaled to become more dominant with more in the way of dry, settled weather anticipated though there could be some isolated showers to eastern parts, that could perhaps be wintry at times. Temperatures will lower compared to recent weeks, closer to or perhaps a little below average for many. Overnight frost and fog or freezing fog could become more prevalent, though any particularly cold conditions look unlikely at this stage.

Wed 24 Dec South West England

Unsettled conditions are likely to continue at first, with low pressure probably centred somewhere to the southwest of the UK, whilst high pressure becomes established to the northeast. This means a broadly easterly flow will become increasingly dominant through next week, whilst periods of rain or showers become increasingly confined to southern or southwestern parts. With time, high pressure is signaled to become more dominant with more in the way of dry, settled weather anticipated though there could be some isolated showers to eastern parts, that could perhaps be wintry at times. Temperatures will lower compared to recent weeks, closer to or perhaps a little below average for many. Overnight frost and fog or freezing fog could become more prevalent, though any particularly cold conditions look unlikely at this stage.

Trelan Weather Forecast

Today 18 Dec South West England

Tonight 18 Dec South West England

Fri 19 Dec South West England

Sat 20 Dec South West England

Sun 21 Dec South West England

Mon 22 Dec South West England

Tue 23 Dec South West England

Wed 24 Dec South West England

Temperature Forecast Met Office

Temperature Real-Time

Predannack (Cornwall) Radar

National Satellite

National Synoptic

Trelan Temperature Statistics

December Temperature

Culdrose (10km)

Lowest 2 January, 2025

Average 2025

Highest 11 July, 2025

Lowest 21 November, 2025

Average November

Highest 5 November, 2025

Lowest 16 December, 2025

Average December

Highest 9 December, 2025

Climate (2020–Present)

Culdrose (10km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025