Colwyn Bay Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Colwyn Bay.
Climate overview of Colwyn Bay
Temperatures in Colwyn Bay, Gwynedd, United Kingdom, vary greatly throughout the year. July is the hottest month at 20°C (68°F), while January is the coldest at 9°C (48°F).
Rainfall is high, totalling around 1039 mm (41 in) per year. December is the wettest month and May the driest. The city also experiences pleasant summers and cold winters. The sunniest month is May, with 5.6 hours of sunshine per day on average.
Colwyn Bay Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Colwyn Bay - and find the best time to visit.
Monthly Temperature in Colwyn Bay
The climate in Colwyn Bay is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a pleasant 20°C (68°F) in July, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.
At night, you can expect temperatures ranging from 13°C (55°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 Colwyn Bay
Colwyn Bay has a notably wet climate with abundant precipitation, recording 1039 mm (41 in) of rainfall per year. Year-round, Colwyn Bay has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 103 mm (4.1 in), and the driest month, May, with 74 mm (2.9 in), is minimal. For more details, please visit our Colwyn Bay 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 Colwyn Bay
Seasonal changes in sunshine hours are quite dramatic in Colwyn Bay. 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
Daily hours of sunshine
Best Time to Visit Colwyn Bay
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 Colwyn Bay
What is the best time to visit Colwyn Bay?
July and August typically offer the most optimal weather in Colwyn Bay. In contrast, January, February, November and December tend to have less optimal conditions. Colwyn Bay has pleasant summers and cold winters.
What temperatures can I expect in Colwyn Bay?
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 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Colwyn Bay get?
Annual rainfall is around 1039 mm (41 in). December is the wettest month with 103 mm (4.1 in), while May is the driest with 74 mm (2.9 in).
How sunny is Colwyn Bay?
Colwyn Bay 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.
Colwyn Bay 3-Day Forecast
Colwyn Bay on the map
Colwyn Bay is highlighted - select any city to see its climate.
Popular this month
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