Groeslon Weather Forecast, Gwynedd LL54 7

Today 9 Dec Wales

Storm Bram brings a mainly cloudy start with outbreaks of heavy rain through the morning, especially in the south. Rain eventually eases bringing brighter skies through the afternoon. Gales easing but staying windy for most places. Exceptionally mild for December. Maximum Temperature 15C.

Tonight 9 Dec Wales

Skies continue to clear and any rain will ease, leaving a dry night at first. Showers move into the west later which will be heavy at times. Winds remain blustery. Minimum Temperature 9C.

Wed 10 Dec Wales

A much brighter day with sunny spells across the region. Some isolated showers for the west, but easing as they track eastwards. Winds easing through the day. Cooler than Tuesday. Maximum Temperature 12C.

Thu 11 Dec Wales

Turning cloudier again on Thursday but staying mostly dry. Showers moving in overnight with sunshine and showers to end the week. Wet and windy again for Saturday. Staying mild.

Fri 12 Dec Wales

Turning cloudier again on Thursday but staying mostly dry. Showers moving in overnight with sunshine and showers to end the week. Wet and windy again for Saturday. Staying mild.

Sat 13 Dec Wales

Turning cloudier again on Thursday but staying mostly dry. Showers moving in overnight with sunshine and showers to end the week. Wet and windy again for Saturday. Staying mild.

Sun 14 Dec Wales

A continuation of a similar pattern to that seen through early December is anticipated, especially at first, as frontal systems from the Atlantic spread into and across the UK, interspersed with some temporary drier interludes. These will bring spells of rain, which may be heavy at times leading to the risk of some impacts given how wet it has been lately, especially in the west. In addition, there may also be potential for some periods of strong winds at times too. Whilst it will often be mild, later in the period there may be a slight downward trend in temperature, especially across northern parts of the UK where there may also be a slightly higher chance of some wintry hazards at times.

Mon 15 Dec Wales

A continuation of a similar pattern to that seen through early December is anticipated, especially at first, as frontal systems from the Atlantic spread into and across the UK, interspersed with some temporary drier interludes. These will bring spells of rain, which may be heavy at times leading to the risk of some impacts given how wet it has been lately, especially in the west. In addition, there may also be potential for some periods of strong winds at times too. Whilst it will often be mild, later in the period there may be a slight downward trend in temperature, especially across northern parts of the UK where there may also be a slightly higher chance of some wintry hazards at times.

Groeslon Weather Forecast

Today 9 Dec Wales

Tonight 9 Dec Wales

Wed 10 Dec Wales

Thu 11 Dec Wales

Fri 12 Dec Wales

Sat 13 Dec Wales

Sun 14 Dec Wales

Mon 15 Dec Wales

Temperature Forecast Met Office

Temperature Real-Time

Crug-y-Gorllwyn (Carmarthenshire) Radar

National Satellite

National Synoptic

Groeslon Temperature Statistics

December Temperature

Capel Curig Saws (22km)

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 1 December, 2025

Climate (2020–Present)

Capel Curig Saws (22km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025