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

April 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
April is a cool spring month in Belfast, United Kingdom, with temperature in the range of an average high of 11.9°C (53.4°F) and an average low of 4.3°C (39.7°F).

Temperature

In April, the average high-temperature is relatively the same as in March - a fresh 11.9°C (53.4°F). In April, the average low-temperature is 4.3°C (39.7°F).

Rainfall

In Belfast, during April, the rain falls for 11.4 days and regularly aggregates up to 58mm (2.3") of precipitation. In Belfast, during the entire year, the rain falls for 157.5 days and collects up to 860.2mm (33.9") of precipitation.

Sea temperature

In April, the average sea temperature is 8.8°C (47.8°F).
Note: Swimming in 8.8°C (47.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In April, the average length of the day is 14.1h.

Sunshine

In April, the average sunshine in Belfast is 5.1h.

UV index

In Belfast, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in April in Belfast?

The average high-temperature, in April, in Belfast, is 11.9°C (53.4°F), while the average low-temperature is 4.3°C (39.7°F).

How much does it rain in Belfast in April?

In Belfast, during April, the rain falls for 11.4 days and regularly aggregates up to 58mm (2.3") of precipitation.

What is the water temperature in April in Belfast?

In Belfast, United Kingdom, in April, the average water temperature is 8.8°C (47.8°F). Swimming in 8.8°C (47.8°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.

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

In Belfast, the average length of the day in April is 14.1h.

How many hours of sunshine does Belfast have in April?

In Belfast, United Kingdom, the average sunshine in April is 5.1h.

What is the UV index intensity in April in Belfast?

In Belfast, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in April - Belfast, United Kingdom
  • Average high temperature in April: 11.9°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 April: 4.3°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 April - Belfast, United Kingdom
  • Average rainfall in April: 58mm

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 April - Belfast, United Kingdom
  • Average rainfall days in April: 11.4 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 April - Belfast, United Kingdom
  • Average sea temperature in April: 8.8°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 April / Average sunshine in April - Belfast, United Kingdom
  • Average daylight in April: 14.1h

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 April: 5.1h

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 April - Belfast, United Kingdom
  • Average UV index in April: 3

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).