Snowdonia National Park Weather & Climate: the United Kingdom

Climate by month across Snowdonia National Park, the United Kingdom, average temperatures, rainfall and the best time to visit.

Climate overview of Snowdonia National Park

Snowdonia National Park is one of several regions in the United Kingdom, with temperatures that range from 7°C (45°F) in January to 19°C (66°F) during the peak of July. We've based our full climate overview on data from Betws-y-coed, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Snowdonia National Park, the months of July and August bring pleasant weather, with average temperatures ranging between 19°C (66°F) and 19°C (66°F).

The colder months are generally January, February, March and December.

Precipitation in Snowdonia National Park shows some seasonal variation. You'll find the most rain in December (124 mm (4.9 in)), while May tends to be drier (88 mm (3.5 in)).

For those seeking sunshine, May usually has the brightest skies, making it an excellent time for exploring the region.

Explore Snowdonia National Park by month

Pick a month to see the average temperature, rainfall and sunshine in Snowdonia National Park — and find the best time to visit. (based on Betws-y-coed)

Popular cities by month

Compare cities per month. Toggle cities on/off.

Betws-y-coed Dolgellau Blaenau-Ffestiniog Beddgelert Dolwyddelan Llanberis
Day temperature (°C)
Monthly rainfall (mm)
Monthly sunshine (hours)

Climate map of Snowdonia National Park

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)
32°

Compare popular cities

Average daytime and nighttime temperatures, yearly rainfall and sunshine.

Betws-y-coed 8°C (46°F) 19°C (66°F) 2°C (36°F) 12°C (54°F) 1225 mm (48 in) 1,192 hours
Dolgellau 8°C (46°F) 19°C (66°F) 3°C (37°F) 12°C (54°F) 1353 mm (53 in) 1,192 hours
Blaenau-Ffestiniog 8°C (46°F) 19°C (66°F) 2°C (36°F) 11°C (52°F) 1412 mm (56 in) 1,192 hours
Beddgelert 8°C (46°F) 19°C (66°F) 3°C (37°F) 12°C (54°F) 1508 mm (59 in) 1,192 hours
Dolwyddelan 8°C (46°F) 19°C (66°F) 2°C (36°F) 12°C (54°F) 1323 mm (52 in) 1,192 hours
Llanberis 8°C (46°F) 19°C (66°F) 3°C (37°F) 12°C (54°F) 1344 mm (53 in) 1,192 hours

Places in Snowdonia National Park, the United Kingdom

Select a city to see its average temperature, precipitation and hours of sunshine over the year.

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Bucket list

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