Belfast
United Kingdom
Long-term weather forecast
Long-term weather forecast

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
June, the first month of the summer, in Belfast, is an enjoyable month, with average temperature varying between 9.8°C (49.6°F) and 17.4°C (63.3°F).

Temperature

In June, the average high-temperature is practically the same as in May - a comfortable 17.4°C (63.3°F). The average low-temperature, in Belfast, United Kingdom, is 9.8°C (49.6°F).

Rainfall

In June, in Belfast, the rain falls for 11.3 days. Throughout June, 60.5mm (2.4") of precipitation is accumulated. Throughout the year, in Belfast, there are 157.5 rainfall days, and 860.2mm (33.9") of precipitation is accumulated.

Sea temperature

In Belfast, the average seawater temperature in June is 11.8°C (53.2°F).
Note: Swimming in 11.8°C (53.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

June has the longest days of the year in Belfast, United Kingdom, with an average of 17.2h of daylight.

Sunshine

In June, the average sunshine is 5.6h.

UV index

Months with the highest UV index in Belfast are June and July, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in June in Belfast?

In Belfast, United Kingdom, in June, the average high-temperature is 17.4°C (63.3°F), and the average low-temperature is 9.8°C (49.6°F).

How much does it rain in Belfast in June?

In June, in Belfast, United Kingdom, the rain falls for 11.3 days. Throughout June, 60.5mm (2.4") of precipitation is accumulated.

What is the water temperature in June in Belfast?

In Belfast, United Kingdom, in June, the average water temperature 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.

When are the longest days in Belfast?

With an average of 17.2h of daylight, June has the longest days of the year in Belfast.

What is the average length of the day in June in Belfast?

In June, the average length of the day is 17.2h.

How many hours of sunshine does Belfast have in June?

In Belfast, United Kingdom, the average sunshine in June is 5.6h.

What is the month with the highest UV index in Belfast?

Months with the highest UV index in Belfast, United Kingdom, are June and July, with an average maximum UV index of 6.

What is the UV index reading in June in Belfast?

In June, the average daily maximum UV index in Belfast is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.
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).