Northern Ireland - United Kingdom
Belfast weather and climate
Northern Ireland - United Kingdom
Belfast weather and climate
Day
15 °C
Night
7 °C
Sea
9 °C
Precipitation
60 mm
in month
Rainy days
13 days
in month
Daylight
16 hours
average
Sunshine
6 hours
average
Humidity
83 %
Weather charts for Belfast
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Weather overview for Belfast
Weather overview
Belfast (United Kingdom) is a place with a mild climate. Temperatures during the day are in the range from 7.8 °C (46.0 °F) in January to 18.9 °C (66.0 °F) in July. The highest night temperatures could be experienced in July with 11.4 °C (52.5 °F), the lowest in February with 2.3 °C (36.1 °F). The least rainy month in Belfast is April with its 12 days of rain, the rainiest month is November, when it rains 17 days.
January weather
The minimum of the day temperature can be noticed, with its value of 7.8 °C (46.0 °F) in Belfast, while the descent of the sea temperature can be observed, the value of this measure is 8.8 °C (47.8 °F). The wind speed reaches its maximum, with its value being 6.7.
February weather
The sea temperature continues to descent, with its value of 7.9 °C (46.1 °F) in Belfast, while the minimum of the night temperature is observable, with its value being 2.3 °C (36.1 °F). The number of rainy days starts to descent, its value is 15 days, and the rainfall amount descent's start could be observed as well. The number of sun hours (without clouds) rise's start could be observed in February.
March weather
The minimum of the sea temperature is observable, with its value being 7.5 °C (45.5 °F) in Belfast, while the day temperature starts to rise, the value of this measure is 9.5 °C (49.1 °F). The rainfall amount rise's start could be observed, with its value being 72 mm (2.84 in). The beginning of the rise of the night temperature could be noticed in March. The number of sun hours (without clouds) continues to rise.
April weather
The sea temperature rise's start could be observed, with its value being 8.1 °C (46.5 °F) in Belfast, while the rise of the day temperature can be observed, the value of this measure is 11.7 °C (53.1 °F). The minimum of the number of rainy days is observable, with its value being 12 days, while the rainfall amount starts to descent, its value is 62 mm (2.43 in). The number of sun hours (without clouds) continues to rise, with its value of 5 hours. The night temperature continues to rise, its value is 4.2 °C (39.6 °F).
May weather
The day temperature continues to rise, with its value being 14.6 °C (58.3 °F) in Belfast, and the sea temperature rises similarly to the previous month as well, its value is 9.4 °C (48.9 °F). The rainfall amount is on its minimum in this month. The number of sun hours (without clouds) reaches its maximum in May. The night temperature rises similarly to the previous month, with its value being 6.5 °C (43.7 °F). The humidity is on its minimum in this month.
June weather
The sea temperature continues to rise, the value of this measure is 11.3 °C (52.3 °F) in Belfast, and the day temperature rises similarly to the previous month as well, with its value being 17.2 °C (63.0 °F). The beginning of the rise of the rainfall amount could be noticed, its value is 66 mm (2.58 in). The rise of the night temperature can be observed, with its value of 9.4 °C (48.9 °F). The maximum of the day length can be noticed, with its value of 17 hours.
July weather
The tourist season is at its beginning in Belfast. The sea temperature continues to rise, with its value being 12.8 °C (55.1 °F), while the maximum of the day temperature can be noticed, its value is 18.9 °C (66.0 °F). The beginning of the rise of the number of rainy days could be noticed, while the rainfall amount rises similarly to the previous month, its value is 72 mm (2.84 in). The maximum of the night temperature is observable, the value of this measure is 11.4 °C (52.5 °F).
August weather
The tourist season is taking place this month in Belfast. The sea temperature continues to rise, with its value being 13.7 °C (56.6 °F), while the day temperature descent's start could be observed, the value of this measure is 18.4 °C (65.1 °F). The number of rainy days continues to rise, the value of this measure is 15 days, and the rise of the rainfall amount can be observed as well, its value is 85 mm (3.35 in).
September weather
The day temperature descents similarly to the previous month, its value is 16.2 °C (61.2 °F) in Belfast, while the sea temperature is on its maximum. The number of rainy days descent's start could be observed, its value is 14 days, and the rainfall amount starts to descent too, with its value of 78 mm (3.05 in). The beginning of the descent of the number of sun hours (without clouds) could be noticed in September. The night temperature descent's start could be observed in September.
October weather
The day temperature continues to descent, its value is 13.2 °C (55.8 °F) in Belfast, while the sea temperature descent's start could be observed in this month. The number of rainy days rise's start could be observed, the value of this measure is 16 days, while the rainfall amount reaches its maximum in October. The descent of the night temperature can be observed, with its value of 7.1 °C (44.8 °F). The number of sun hours (without clouds) continues to descent, its value is 3 hours.
November weather
The day temperature continues to descent, the value of this measure is 10.2 °C (50.4 °F) in Belfast, and the sea temperature descents similarly to the previous month too, its value is 11.9 °C (53.4 °F). The rainfall amount starts to descent, with its value of 89 mm (3.49 in), while the maximum of the number of rainy days is observable, the value of this measure is 17 days. The night temperature continues to descent, with its value being 4.7 °C (40.5 °F). The descent of the number of sun hours (without clouds) can be observed, its value is 2 hours.
December weather
The day temperature continues to descent, with its value being 8.0 °C (46.4 °F) in Belfast, and the descent of the sea temperature can be observed too, with its value of 10.3 °C (50.6 °F). The descent of the night temperature can be observed, the value of this measure is 2.8 °C (37.0 °F). The number of rainy days starts to descent in this month. The humidity is on its maximum. The number of sun hours (without clouds) reaches its minimum in this month.
FAQs
How many hours of sun to expect in May in Belfast?
In May in Belfast, you can expect around 6 hours of sunshine.
How many rainy days can I expect in June in Belfast?
There are 13 days, which are rainy in Belfast in June, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.0 days of the week, or in general - 43 % days.
What temperature can I expect during the day in July in Belfast?
In Belfast in July, the average daily temperatures will be 18.9 °C (66.0 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
Is there a wet season in August in Belfast?
No, there is no wet season in August in Belfast - you can expect 15 days of rain during the month.
What is the night temperature in September in Belfast?
The average night temperature in Belfast in September is 9.4 °C (48.9 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.
Is October a good month to visit Belfast?
Belfast can be visited in October - the weather will be moderate. A relatively low temperature of 13.2 °C (55.8 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The temperature of 7.1 °C (44.8 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.