Cwm-y-glo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cwm-y-glo.
Climate overview of Cwm-y-glo
Cwm-y-glo, Gwynedd, United Kingdom, has a moderate seasonal temperature range, with July reaching 19°C (66°F) and January cooling to 9°C (48°F).
The city has a wet climate, receiving around 1320 mm (52 in) of rainfall per year. Despite the high annual total, it has pleasant summers and cold winters. December is the wettest month. The sunniest month is May, with 5.6 hours of sunshine per day on average.
Cwm-y-glo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cwm-y-glo - and find the best time to visit.
Monthly Temperature in Cwm-y-glo
The weather in Cwm-y-glo changes moderately throughout the year, offering enough variation to appreciate each season. On average, daytime temperatures range from a pleasant 19°C (66°F) in July to a chilly 9°C (48°F) in January.
Nighttime temperatures range from 12°C (54°F) in July to 3°C (37°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cwm-y-glo
Cwm-y-glo is known for its substantial rainfall, with annual precipitation reaching 1320 mm (52 in). The wettest period in Cwm-y-glo occurs in December, which receives around 139 mm (5.5 in) of precipitation. During the driest month, May, Cwm-y-glo experiences moderate rainfall, totaling 88 mm (3.5 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Cwm-y-glo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Cwm-y-glo
In Cwm-y-glo, summer days are longer and more sunny, with daily sunshine hours peaking at 5.6 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 0.9 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Cwm-y-glo
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June and July
- Warmest weather: July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Cwm-y-glo
What is the best time to visit Cwm-y-glo?
June and July typically offer the most optimal weather in Cwm-y-glo. In contrast, January, February, March, November and December tend to have less optimal conditions. Cwm-y-glo has pleasant summers and cold winters.
What temperatures can I expect in Cwm-y-glo?
Daytime highs range from 9°C (48°F) in January to 19°C (66°F) in July. Nighttime lows range from 3°C (37°F) to 12°C (54°F).
How much rain does Cwm-y-glo get?
Annual rainfall is around 1320 mm (52 in). December is the wettest month with 139 mm (5.5 in), while May is the driest with 88 mm (3.5 in).
How sunny is Cwm-y-glo?
Cwm-y-glo receives around 1,192 hours of sunshine per year. May is the sunniest month with 169 hours, while December is the cloudiest with just 26 hours.
Cwm-y-glo 3-Day Forecast
Cwm-y-glo 3-Day Forecast
Cwm-y-glo on the map
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Popular this month
Where to go in July - average daytime high across popular destinations.
London
23°C (73°F) Bath22°C (72°F) York22°C (72°F) Manchester
21°C (70°F) Edinburgh
19°C (66°F) Glasgow19°C (66°F) Torquay20°C (68°F) Blackpool19°C (66°F) 
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