Belfast Weather & Climate: Best Time to Visit
On this page you can find the weather by month for Belfast. Who is making a city trip to this city can expect clouds and rainy days. Because of its Sea climate Belfast has mild winters and pretty warm summers. Spring from May till June is a good time to visit Belfast since it's the most sunny period of the year (with an average of six hours of sunshine a day). Summerdays tend to be more cloudy.
Monthly Temperature in Belfast
In Belfast, seasonal changes bring about a moderate variation in temperatures. 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 Belfast
Generally, Belfast has a moderate amount of precipitation, averaging 974 mm (38 in) of rainfall annually. Despite minor fluctuations, Belfast enjoys fairly consistent precipitation throughout the year. In August, you can expect around 91 mm (3.6 in) of precipitation, while in March, Belfast receives about 69 mm (2.7 in). For more details, please visit our Belfast 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 Belfast
Belfast can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 6.1 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Belfast
The mean water temperature over the year ranges from 7°C (45°F) in February to 13°C (55°F) in August.
Water temperature over the year
Humidity in Belfast by Month
The city experiences its highest humidity in September, reaching 91%. In February, the humidity drops to its lowest level at 86%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Belfast
The average wind speed over the year ranges from 4 m/s (8 knots) to 5 m/s (10 knots). It is lower in April, May, June, July, August and September and higher in January, February, March, October, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Belfast 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Belfast
During the months of June, July and August, Belfast enjoys pleasant weather with average temperatures ranging from 18°C (64°F) to 20°C (67°F). These months are perfect for sightseeing and exploring.Rainfall during this time ranges from 87 mm (3.4 in) in June to 91 mm (3.6 in) in August. This means you can expect a mix of sunny days and occasional showers. Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
