Monthly weather forecast and climate
Belfast, United Kingdom

A close-up view of the Northern Ireland City Hall located in Belfast, United Kingdom
A close-up view of the Northern Ireland City Hall located in Belfast, United Kingdom

What is the coldest month in Belfast?

The coldest month is January, with an average high-temperature of 7.1°C (44.8°F) and an average low-temperature of 1.7°C (35.1°F).

How much does it rain in Belfast?

Throughout the year, in Belfast, there are 157.5 rainfall days, and 860.2mm (33.9") of precipitation is accumulated.

What is the driest month in Belfast?

The month with the least rainfall is May when the rain falls for 11.7 days and typically collects 57.3mm (2.3") of precipitation.

What is the warmest month in Belfast?

With an average high-temperature of 18.8°C (65.8°F) and an average low-temperature of 11.7°C (53.1°F), July is the warmest month in Belfast.

What is the rainiest month in Belfast?

October is the month with the most rainfall. Rain falls for 14.4 days and accumulates 89.6mm (3.5") of precipitation.
Average rainfall - Belfast, United Kingdom

The wettest month (with the highest rainfall) is October (89.6mm).
The driest month (with the lowest rainfall) is May (57.3mm).

Average rainfall days - Belfast, United Kingdom

The month with the highest number of rainy days is January (14.8 days).
The month with the lowest number of rainy days is June (11.3 days).

Average sea temperature - Belfast, United Kingdom

The best month for swimming (with the highest average sea temperature) is September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (8°C).

Average daylight / Average sunshine - Belfast, United Kingdom
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