Weather World
Belfast Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 44°F Lo 36°F | Hi 45°F Lo 36°F | Hi 48°F Lo 37°F | Hi 52°F Lo 40°F | Hi 57°F Lo 44°F | Hi 62°F Lo 49°F | Hi 64°F Lo 52°F | Hi 63°F Lo 51°F | Hi 60°F Lo 49°F | Hi 55°F Lo 46°F | Hi 49°F Lo 41°F | Hi 45°F Lo 38°F |
| 11 mph | 12 mph | 11 mph | 9 mph | 9 mph | 8 mph | 8 mph | 9 mph | 9 mph | 10 mph | 11 mph | 12 mph |
| 2.8 in | 2.9 in | 2.7 in | 2.4 in | 2.8 in | 3.6 in | 3.4 in | 3.7 in | 2.9 in | 3.2 in | 3.5 in | 3.4 in |
| 89% | 87% | 85% | 83% | 84% | 85% | 86% | 87% | 87% | 88% | 88% | 89% |
| 65% | 67% | 63% | 58% | 60% | 63% | 64% | 63% | 61% | 65% | 64% | 63% |
| 29.8 in | 29.8 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 29.9 in | 29.8 in | 29.8 in |
| 21 | 19 | 21 | 23 | 22 | 21 | 21 | 21 | 22 | 22 | 21 | 21 |
| 8 | 9 | 9 | 7 | 9 | 9 | 10 | 10 | 8 | 9 | 9 | 10 |
| 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 |
| 1 | 1 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 2 | 2 | 2 |
| 83 | 61 | 79 | 95 | 86 | 76 | 59 | 68 | 78 | 68 | 83 | 92 |
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 7°C | Hi 17°C Lo 9°C | Hi 18°C Lo 11°C | Hi 17°C Lo 11°C | Hi 15°C Lo 9°C | Hi 13°C Lo 8°C | Hi 9°C Lo 5°C | Hi 7°C Lo 3°C |
| 11 mph | 12 mph | 11 mph | 9 mph | 9 mph | 8 mph | 8 mph | 9 mph | 9 mph | 10 mph | 11 mph | 12 mph |
| 70 mm | 73 mm | 67 mm | 61 mm | 72 mm | 91 mm | 86 mm | 95 mm | 73 mm | 82 mm | 88 mm | 86 mm |
| 89% | 87% | 85% | 83% | 84% | 85% | 86% | 87% | 87% | 88% | 88% | 89% |
| 65% | 67% | 63% | 58% | 60% | 63% | 64% | 63% | 61% | 65% | 64% | 63% |
| 1010 mb | 1010 mb | 1013 mb | 1015 mb | 1016 mb | 1015 mb | 1014 mb | 1012 mb | 1014 mb | 1011 mb | 1008 mb | 1009 mb |
| 21 | 19 | 21 | 23 | 22 | 21 | 21 | 21 | 22 | 22 | 21 | 21 |
| 8 | 9 | 9 | 7 | 9 | 9 | 10 | 10 | 8 | 9 | 9 | 10 |
| 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 |
| 1 | 1 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 2 | 2 | 2 |
| 83 | 61 | 79 | 95 | 86 | 76 | 59 | 68 | 78 | 68 | 83 | 92 |
| 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.