Pennal Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Pennal.
Climate overview of Pennal
The climate in Pennal, Gwynedd, United Kingdom, is marked by large temperature swings across the seasons, ranging from 19°C (66°F) in July to 8°C (46°F) in January.
With around 1334 mm (53 in) of annual rain/snowfall, Pennal has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has pleasant summers and cold winters. The wettest month is December. Sunshine peaks in May, when the city sees around 5.6 hours of sunshine per day.
Pennal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Pennal - and find the best time to visit.
Monthly Temperature in Pennal
In Pennal, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a pleasant 19°C (66°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 8°C (46°F).
At night, temperatures range from around 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 Pennal
Pennal experiences significant rain/snowfall throughout the year, averaging 1334 mm (53 in) of precipitation annually. Pennal experiences moderate seasonal variation in rainfall, with monthly averages ranging from 147 mm (5.8 in) in December, the wettest month, and 87 mm (3.4 in) in April, the driest month. For more details, please visit our Pennal 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 Pennal
Pennal can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 5.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 0.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Pennal
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: June, July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Pennal
What is the best time to visit Pennal?
June and July typically offer the most optimal weather in Pennal. In contrast, January, February, March, November and December tend to have less optimal conditions. Pennal has pleasant summers and cold winters.
What temperatures can I expect in Pennal?
Daytime highs range from 8°C (46°F) in January to 19°C (66°F) in July. Nighttime lows range from 3°C (37°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Pennal get?
Annual rainfall is around 1334 mm (53 in). December is the wettest month with 147 mm (5.8 in), while April is the driest with 87 mm (3.4 in).
How sunny is Pennal?
Pennal 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.
Pennal 3-Day Forecast
Pennal 3-Day Forecast
Pennal on the map
Pennal is highlighted - select any city to see its climate.
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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