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Harlech Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Harlech.
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Climate overview of Harlech
The climate in Harlech, Gwynedd, United Kingdom, sees a moderate range of temperatures across the year, from 19°C (66°F) in July down to 8°C (46°F) in January.
With around 1498 mm (59 in) of annual rainfall, Harlech 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. May is the sunniest month, averaging 5.6 hours of sunshine per day.
Harlech Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Harlech - and find the best time to visit.
Monthly Temperature in Harlech
The weather in Harlech changes moderately throughout the year, offering enough variation to appreciate each season. 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 13°C (55°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 Harlech
Harlech experiences significant rainfall throughout the year, averaging 1498 mm (59 in) of precipitation annually. Harlech experiences moderate seasonal variation in rainfall, with monthly averages ranging from 169 mm (6.7 in) in December, the wettest month, and 93 mm (3.7 in) in April, the driest month. For more details, please visit our Harlech 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 Harlech
Harlech 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
Data from: Bala, the United Kingdom (34 KM, 21 Miles).
Daily hours of sunshine
Data from: Bala, the United Kingdom (34 KM, 21 Miles).
Best Time to Visit Harlech
For the most comfortable conditions available during the year, consider visiting Harlech in May, July and August. Conditions are usually least comfortable 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
wet
Apr
mixed
May
good
Jun
mixed
Jul
good
Aug
good
Sep
mixed
Oct
mixed
Nov
wet
Dec
wet
- Best overall: May, July and August
- Warmest weather: June, July, August and September
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Harlech
What is the best time to visit Harlech?
May, July and August typically offer the most optimal weather in Harlech. In contrast, January, February, March, November and December tend to have less optimal conditions. Harlech has pleasant summers and cold winters.
What temperatures can I expect in Harlech?
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 13°C (55°F).
How much rain does Harlech get?
Annual rainfall is around 1498 mm (59 in). December is the wettest month with 169 mm (6.7 in), while April is the driest with 93 mm (3.7 in).
How sunny is Harlech?
Harlech 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.
Harlech 3-Day Forecast
Harlech on the map
Harlech 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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