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Northern IrelandThe climate of Belfast
The current climate in Belfast features temperatures ranging from a high of 19°C to a low of 8°C throughout the year. The average yearly temperature is around 14°C. At night, temperatures in the colder months average around 3°C and in the warmer months around 12°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Belfast, Northern Ireland.
Temperature records
The highest temperature recorded in Belfast in recent years was 29°C in July 2022. The lowest daytime temperature recorded was -1°C in March 2018.
Precipitation and snowfall
On average, Belfast gets 976 mm of precipitation each year. Of this, about 3,4 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Belfast?
The best time to visit Belfast for mild to warm weather is May up to September. You might get some rain, but the temperatures are just right to explore Belfast.
Find affordable trips to Belfast
Climate Table of Belfast
The climate table of Belfast shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 8 | 9 | 10 | 12 | 15 | 18 | 19 | 18 | 17 | 14 | 10 | 9 |
| Temp. min (°C) | 3 | 4 | 4 | 5 | 8 | 11 | 13 | 12 | 11 | 8 | 6 | 4 |
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| Precipitation (mm) | 91 | 88 | 82 | 55 | 59 | 68 | 80 | 93 | 71 | 93 | 95 | 101 |
| Snow (cm) | 0,9 | 1,1 | 1,0 | 0,2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,2 |
| UV Index | 1 | 2 | 3 | 5 | 6 | 6 | 5 | 5 | 4 | 3 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Belfast, Northern Ireland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Belfast
Yearly Temperature in Belfast
Precipitation charts
These charts show the average amount of precipitation in Belfast, Northern Ireland. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Belfast
Total Yearly Precipitation in Belfast
Average Snowfall per Month in Belfast
Total Yearly Snowfall in Belfast
UV index chart
This chart shows the average UV index per month in Belfast, Northern Ireland. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Belfast
Weather experiences in Belfast
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Average weather in Belfast by month
Click on a month below to see detailed weather info for Belfast. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.