Gerlan Weather Forecast, Gwynedd LL57 3

Today 15 Dec Wales

A widely very wet day with the rain often heavy and persistent. Flooding is likely in places, more especially in the south and west where disruption to travel is most likely. Winds falling light or calm for most. Staying mild. Maximum Temperature 11C.

Tonight 15 Dec Wales

Staying very wet for many this evening with further flooding and travel disruption possible. Gradually becoming drier from the west overnight with skies clearing. A colder night than recent, with pockets of ground frost and fog possible later. Minimum Temperature 2C.

Tue 16 Dec Wales

Any mist and fog clearing, then a dry and increasingly bright day with some sunshine developing for many of us. Not as mild, albeit with light winds for all. Maximum Temperature 9C.

Wed 17 Dec Wales

Turning windier on Wednesday with coastal gales and further rain at times, this likely heavy and persistent by Thursday. Bright and breezy on Friday with sunshine and isolated showers. Mild.

Thu 18 Dec Wales

Turning windier on Wednesday with coastal gales and further rain at times, this likely heavy and persistent by Thursday. Bright and breezy on Friday with sunshine and isolated showers. Mild.

Fri 19 Dec Wales

Turning windier on Wednesday with coastal gales and further rain at times, this likely heavy and persistent by Thursday. Bright and breezy on Friday with sunshine and isolated showers. Mild.

Sat 20 Dec Wales

The unsettled theme is likely to continue through the first part of this period, with further rain or showers affecting many parts at times, and often accompanied by rather windy conditions. In the run up to Christmas, there is a signal for less unsettled conditions to begin to take hold, with a greater chance of high pressure developing in the vicinity of the UK compared to the previous few weeks. Whilst the chance of impactful rain or strong winds should reduce, there may be an increasing incidence of overnight frost and fog, the latter perhaps taking its time to clear, given the time of year. A gradual reduction in temperatures seems likely, falling closer to average overall. Some cold days are possible, if or where any fog persists.

Sun 21 Dec Wales

The unsettled theme is likely to continue through the first part of this period, with further rain or showers affecting many parts at times, and often accompanied by rather windy conditions. In the run up to Christmas, there is a signal for less unsettled conditions to begin to take hold, with a greater chance of high pressure developing in the vicinity of the UK compared to the previous few weeks. Whilst the chance of impactful rain or strong winds should reduce, there may be an increasing incidence of overnight frost and fog, the latter perhaps taking its time to clear, given the time of year. A gradual reduction in temperatures seems likely, falling closer to average overall. Some cold days are possible, if or where any fog persists.

Gerlan Weather Forecast

Today 15 Dec Wales

Tonight 15 Dec Wales

Tue 16 Dec Wales

Wed 17 Dec Wales

Thu 18 Dec Wales

Fri 19 Dec Wales

Sat 20 Dec Wales

Sun 21 Dec Wales

Temperature Forecast Met Office

Temperature Real-Time

Clee Hill (Shropshire) Radar

National Satellite

National Synoptic

Gerlan Temperature Statistics

December Temperature

Capel Curig Saws (11km)

Lowest 9 January, 2025

Average 2025

Highest 12 July, 2025

Lowest 25 November, 2025

Average November

Highest 5 November, 2025

Lowest 4 December, 2025

Average December

Highest 9 December, 2025

Climate (2020–Present)

Capel Curig Saws (11km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025