Belfast Weather & Climate: Best Time to Visit

In Belfast temperatures are generally consistent throughout the year. On average, daytime temperatures range from a comfortable 30°C (86°F) in August to a comfortable 27°C (81°F) in February.

Nighttime temperatures range from 26°C (79°F) in August to 24°C (75°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Belfast experiences significant rainfall throughout the year, averaging 1303 mm (51 in) of precipitation annually. The seasons in Belfast bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 191 mm (7.5 in) of precipitation. This rainfall is distributed across 16 rainy days.

In contrast, the driest month, February, experiences much less rainfall, totaling 52 mm (2 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. 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

The sunniest days in Belfast occur in July, with around 8.8 hours of daily sunshine. Even in October, the least sunny month, Belfast doesn't shy away from the sun, still enjoying a comfortable 7.5 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Belfast.

The city experiences its highest humidity in October, reaching 81%. In July, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year