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Bethesda Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Bethesda.
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Climate overview of Bethesda
Bethesda, Gwynedd, United Kingdom, experiences significant temperature variation throughout the year. Summers bring daytime highs of 20°C (68°F) in July, while winters cool to 8°C (46°F) in January.
Rain/snowfall is high, totalling around 1240 mm (49 in) per year. December is the wettest month and May the driest. The city also experiences pleasant summers and cold winters. May is the sunniest month, averaging 5.6 hours of sunshine per day.
Bethesda Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Bethesda - and find the best time to visit.
Monthly Temperature in Bethesda
Depending on the time of the year, temperatures range from pleasant to chilly in Bethesda. Average maximum daytime temperatures range from a pleasant 20°C (68°F) in July, the warmest time of the year, to a chilly 8°C (46°F) during cooler months like January.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Bethesda
Bethesda has a relatively rain/snowy climate with high precipitation levels, averaging 1240 mm (49 in) of rain/snowfall annually. Year-round, Bethesda has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 126 mm (5 in), and the driest month, May, with 88 mm (3.5 in), is minimal. For more details, please visit our Bethesda 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 Bethesda
Seasonal changes in sunshine hours are quite dramatic in Bethesda. While May receives considerable daily sunshine with up to 5.6 hours, December marks the darkest time of the year, where sunshine is scarce with only 0.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Bala, the United Kingdom (43 KM, 26 Miles).
Daily hours of sunshine
Data from: Bala, the United Kingdom (43 KM, 26 Miles).
Best Time to Visit Bethesda
For comfortable weather, consider visiting Bethesda in July. Conditions are usually least favourable in January, February, March, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
wet
Feb
wet
Mar
cold
Apr
mixed
May
good
Jun
very good
Jul
excellent
Aug
good
Sep
very good
Oct
mixed
Nov
wet
Dec
wet
- Best overall: July
- Warmest weather: July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Bethesda
What is the best time to visit Bethesda?
July typically offers the most optimal weather in Bethesda. In contrast, January, February, March, November and December tend to have less optimal conditions. Bethesda has pleasant summers and cold winters.
What temperatures can I expect in Bethesda?
Daytime highs range from 8°C (46°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 Bethesda get?
Annual rainfall is around 1240 mm (49 in). December is the wettest month with 126 mm (5 in), while May is the driest with 88 mm (3.5 in).
How sunny is Bethesda?
Bethesda 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.
Bethesda 3-Day Forecast
Bethesda on the map
Bethesda is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
London
16°C (61°F) Bath15°C (59°F) Torquay16°C (61°F) Manchester14°C (57°F) York15°C (59°F) Blackpool
15°C (59°F) Edinburgh13°C (55°F) Glasgow14°C (57°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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