June 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 temperature in June in Belfast?

The average high-temperature, in June, is 17.4°C (63.3°F), while the average low-temperature is 9.8°C (49.6°F).

How many days does it rain in June in Belfast?

In Belfast, United Kingdom, in June, during 11.3 rainfall days, typically, 60.5mm (2.4") of precipitation is accumulated.

What is the sea water temperature in June in Belfast?

The average seawater temperature, in June, in Belfast, United Kingdom, is 11.8°C (53.2°F). Swimming in 11.8°C (53.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
Average temperature in June - Belfast, United Kingdom
  • Average high temperature in June: 17.4°C

The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (7.1°C).

  • Average low temperature in June: 9.8°C

The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).

Average rainfall in June - Belfast, United Kingdom
  • Average rainfall in June: 60.5mm

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 in June - Belfast, United Kingdom
  • Average rainfall days in June: 11.3 days

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 in June - Belfast, United Kingdom
  • Average sea temperature in June: 11.8°C

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 in June / Average sunshine in June - Belfast, United Kingdom
  • Average daylight in June: 17.2h

The month with the longest days is June (Average daylight: 17.2h).
The month with shortest days is December (Average daylight: 7.4h).

  • Average sunshine in June: 5.6h

The month with most sunshine is May (Average sunshine: 6.4h).
The month with least sunshine is December (Average sunshine: 1.5h).

Average UV index in June - Belfast, United Kingdom
  • Average UV index in June: 6

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).

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