Bangor Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Bangor.
Climate overview of Bangor
The climate in Bangor, Gwynedd, United Kingdom, is marked by large temperature swings across the seasons, ranging from 20°C (68°F) in July to 9°C (48°F) in January.
With around 1169 mm (46 in) of annual rainfall, Bangor has a notably wet climate. However, this rainfall 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.
Bangor Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Bangor - and find the best time to visit.
Monthly Temperature in Bangor
In Bangor, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a pleasant 20°C (68°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 9°C (48°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 Bangor
Bangor experiences significant rainfall throughout the year, averaging 1169 mm (46 in) of precipitation annually. Despite minor fluctuations, Bangor enjoys fairly consistent precipitation throughout the year. In December, you can expect around 117 mm (4.6 in) of precipitation, while in May, Bangor receives about 84 mm (3.3 in). For more details, please visit our Bangor 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 Bangor
Bangor 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 Bangor
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Bangor
What is the best time to visit Bangor?
July and August typically offer the most optimal weather in Bangor. In contrast, January, February, November and December tend to have less optimal conditions. Bangor has pleasant summers and cold winters.
What temperatures can I expect in Bangor?
Daytime highs range from 9°C (48°F) in January to 20°C (68°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 Bangor get?
Annual rainfall is around 1169 mm (46 in). December is the wettest month with 117 mm (4.6 in), while May is the driest with 84 mm (3.3 in).
How sunny is Bangor?
Bangor 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.
Bangor 3-Day Forecast
Bangor on the map
Bangor is highlighted - select any city to see its climate.
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