WeatherWX.comBelfast Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 43°F Lo 36°F | Hi 45°F Lo 36°F | Hi 48°F Lo 37°F | Hi 52°F Lo 39°F | Hi 57°F Lo 43°F | Hi 62°F Lo 48°F | Hi 64°F Lo 51°F | Hi 63°F Lo 51°F | Hi 60°F Lo 49°F | Hi 55°F Lo 45°F | Hi 48°F Lo 41°F | Hi 44°F Lo 37°F |
| 11 mph | 12 mph | 10 mph | 9 mph | 9 mph | 8 mph | 8 mph | 8 mph | 9 mph | 10 mph | 10 mph | 11 mph |
| 4.1 in | 4.7 in | 4.1 in | 3.5 in | 4.2 in | 5.5 in | 5.8 in | 6.3 in | 4.1 in | 5.3 in | 5 in | 4.4 in |
| 90% | 88% | 85% | 83% | 84% | 85% | 87% | 88% | 88% | 89% | 89% | 90% |
| 65% | 67% | 63% | 59% | 62% | 63% | 64% | 65% | 62% | 65% | 64% | 62% |
| 29.9 in | 29.8 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 29.9 in | 29.8 in | 29.8 in |
| 16 | 13 | 18 | 21 | 22 | 21 | 21 | 21 | 22 | 21 | 20 | 19 |
| 10 | 11 | 10 | 8 | 9 | 9 | 10 | 10 | 8 | 10 | 10 | 10 |
| 4 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 4 | 4 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 5 | 3 | 3 |
| 2 | 2 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 2 | 2 |
| 194 | 161 | 190 | 200 | 194 | 196 | 197 | 193 | 201 | 192 | 192 | 206 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 6°C Lo 2°C | Hi 7°C Lo 2°C | Hi 9°C Lo 3°C | Hi 11°C Lo 4°C | Hi 14°C Lo 6°C | Hi 17°C Lo 9°C | Hi 18°C Lo 11°C | Hi 17°C Lo 11°C | Hi 16°C Lo 9°C | Hi 13°C Lo 7°C | Hi 9°C Lo 5°C | Hi 7°C Lo 3°C |
| 18 km/h | 19 km/h | 17 km/h | 15 km/h | 14 km/h | 13 km/h | 12 km/h | 13 km/h | 14 km/h | 15 km/h | 17 km/h | 18 km/h |
| 104 mm | 118 mm | 105 mm | 89 mm | 107 mm | 140 mm | 147 mm | 159 mm | 105 mm | 136 mm | 127 mm | 111 mm |
| 90% | 88% | 85% | 83% | 84% | 85% | 87% | 88% | 88% | 89% | 89% | 90% |
| 65% | 67% | 63% | 59% | 62% | 63% | 64% | 65% | 62% | 65% | 64% | 62% |
| 1011 mb | 1010 mb | 1014 mb | 1015 mb | 1015 mb | 1015 mb | 1013 mb | 1012 mb | 1015 mb | 1011 mb | 1009 mb | 1009 mb |
| 16 | 13 | 18 | 21 | 22 | 21 | 21 | 21 | 22 | 21 | 20 | 19 |
| 10 | 11 | 10 | 8 | 9 | 9 | 10 | 10 | 8 | 10 | 10 | 10 |
| 4 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| 4 | 4 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 5 | 3 | 3 |
| 2 | 2 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 2 | 2 |
| 194 | 161 | 190 | 200 | 194 | 196 | 197 | 193 | 201 | 192 | 192 | 206 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.
