The bar chart below shows the average monthly peak daytime temperatures at Belfast
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | -2.3 | -0.9 | 4.2 | 10.8 | 17.5 | 22.4 | 25.5 | 24.6 | 19.9 | 14 | 7.3 | 0.2 |
°F | 27.9 | 30.5 | 39.5 | 51.4 | 63.5 | 72.4 | 78 | 76.3 | 67.9 | 57.1 | 45.1 | 32.3 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
The graph below shows the average rainfall and number of rainy days per month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 91 | 78 | 95 | 95 | 95 | 90 | 83 | 83 | 91 | 97 | 116 | 110 |
inches | 3.6 | 3.1 | 3.7 | 3.7 | 3.7 | 3.6 | 3.3 | 3.3 | 3.6 | 3.8 | 4.6 | 4.3 |
Rainy days | 12 | 10 | 12 | 12 | 12 | 12 | 11 | 11 | 10 | 11 | 13 | 13 |
Average annual rainfall in Belfast: 1100.734mm (433.4 inches)
The bar chart below shows the average daily sunshine hours in Belfast
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 4.3 | 5.2 | 5.9 | 6.6 | 7.6 | 8.2 | 8.5 | 8.2 | 7 | 5.7 | 4 | 3.7 |
The graph below shows the daily range of temperatures for each month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Min °C | -12.8 | -11.4 | -5.4 | 0.6 | 6.2 | 11.3 | 14.6 | 13.9 | 9.2 | 3.8 | -1.1 | -9.2 |
Max °C | -2.1 | -0.6 | 4.4 | 11 | 17.8 | 22.7 | 25.8 | 24.9 | 20.2 | 14.2 | 7.5 | 0.4 |
Min °F | 9.1 | 11.5 | 22.3 | 33.1 | 43.2 | 52.3 | 58.3 | 57 | 48.6 | 38.8 | 30 | 15.4 |
Max °F | 18.7 | 21.2 | 31.1 | 42.4 | 53.6 | 62.6 | 68.4 | 66.9 | 58.5 | 48.2 | 37.8 | 24.1 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 5.4 | 4.1 | 3.6 | 4.8 | 7.8 | 11.5 | 14.8 | 15.8 | 14.1 | 11.5 | 9.2 | 7.2 |
°F | 41.8 | 39.3 | 38.5 | 40.7 | 46.1 | 52.8 | 58.7 | 60.5 | 57.4 | 52.7 | 48.5 | 45 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 16 | 16 | 17 | 17 | 15 | 14 | 12 | 12 | 13 | 14 | 15 | 15 |
mph | 10 | 10 | 11 | 10 | 9 | 9 | 8 | 7 | 8 | 9 | 9 | 9 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
70% | 69% | 69% | 70% | 71% | 75% | 77% | 78% | 79% | 77% | 77% | 74% |
Hottest month: | July | 25.5°C 77.9°F |
---|---|---|
Driest month: | February | 78mm 3.1ins |
Sunniest month: | August | 8.2hrs |
Coldest month: | January | -2.3°C 27.9°F |
Wettest month: | November | 116mm 4.6ins |
Warmest sea: | August | 15.8°C 60.4°F |