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When is the best time to visit Belfast?
In general the best time to visit Belfast is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
But ultimately the best time to visit depends on what you want to do:
- In general, it’s pleasant to walk and do outdoor activities during July - August.
- If you want to avoid wet weather, then your choice is January, November, December with the lowest chance of rain.
Average weather in Belfast in different months
This is the average weather in Belfast for each month based on historic data:
In February, March, April, May, June, July, August, September, October, November, December the weather is average. Expect around 205 rainy days, and the precipitation amounts to approximately 91 mm in October.
January bring not the best weather. January is the coldest month with the temperature going down to +3°C.
Climate in Belfast
Here is the detailed breakdown of the climate in Belfast for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +15°C | +15°C | +18°C | +22°C | +25°C | +30°C | +29°C | +29°C | +25°C | +21°C | +18°C | +15°C |
| Average Maximum Temperature | |||||||||||
| +8°C | +8°C | +9°C | +11°C | +14°C | +17°C | +18°C | +18°C | +16°C | +13°C | +10°C | +8°C |
| Minimum Temperature | |||||||||||
| -9°C | -7°C | -5°C | -3°C | -1°C | +2°C | +4°C | +3°C | +1°C | -2°C | -6°C | -13°C |
| Avg. water temperature | |||||||||||
| +10°C | +9°C | +9°C | +10°C | +11°C | +14°C | +15°C | +15°C | +15°C | +14°C | +13°C | +12°C |
| Humidity, % | |||||||||||
| 85 | 83 | 81 | 77 | 76 | 77 | 78 | 81 | 82 | 84 | 85 | 87 |
| Rain, mm | |||||||||||
| 75 | 63 | 68 | 60 | 69 | 73 | 74 | 82 | 72 | 91 | 82 | 84 |
| Snow, mm | |||||||||||
| 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Average wind speed, m/s | |||||||||||
| 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 4 | 4 | 4 | 4 |
| Sunny Days | |||||||||||
| 1 | 2 | 2 | 3 | 4 | 2 | 2 | 1 | 2 | 1 | 1 | 1 |
| Cloud Days | |||||||||||
| 10 | 9 | 9 | 8 | 8 | 8 | 8 | 9 | 10 | 11 | 10 | 11 |
| Rainy Days | |||||||||||
| 18 | 16 | 19 | 18 | 19 | 19 | 20 | 21 | 18 | 19 | 18 | 18 |
| Snowy Days | |||||||||||
| 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
Average Temperature
Here are the average maximum and minimum temperatures in Belfast during the whole year:
The hottest month in Belfast is August with average maximum temperature going up to +18°C. The coldest month is January with the lowest temperatures of +3°C.
Water temperature
Here are the water temperatures in Belfast during the whole year:
Belfast achieves its warmest water temperature in September, where the average sea temperature goes up to +14°C. Coldest water temperature is in March with +8°C in average.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Belfast looks throughout the year, in %:
The most humid month in Belfast is December with average humidity going up to 87%. The least humid month is May with an average humidity of 76%.
Rain
Amount of rainfall in mm. in Belfast during the whole year based on historical data:
The sunniest and driest month is May with approximately 4 sunny days and a total precipitation of around 69 mm. The rainiest and wettest month is October with approximately 19 rainy days and 91 mm of total precipitation.
Snow
Amount of snow in mm. in Belfast during the whole year based on historical data:
The snowiest month is March with approximately 1 snowy days.
FAQ
Frequently asked questions about the weather in Belfast:
What is the hottest month in Belfast?
The hottest month in Belfast is August with average maximum temperature of +18°C.
What is the coldest month in Belfast?
The coldest month in Belfast is January with minimum temperatures of +3°C.
Is Belfast worth visiting in winter?
Winter in Belfast could be a good time to visit, as the weather is generally ok.
When does it rain the least in Belfast?
if you're looking to visit Belfast when it rains the least, you should plan your trip for October, December, November. During this time, rainfall is rare with the driest month being April with only 60 mm of rain.
Other cities in United Kingdom
Check out the weather for other cities in United Kingdom.
Monthly weather in Belfast
Source of the data
For this page, we’ve looked at the typical weather in Belfast, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.