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Hafnarfjordur Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 35°F Lo 28°F | Hi 36°F Lo 29°F | Hi 37°F Lo 30°F | Hi 42°F Lo 34°F | Hi 48°F Lo 40°F | Hi 54°F Lo 46°F | Hi 57°F Lo 49°F | Hi 56°F Lo 48°F | Hi 51°F Lo 44°F | Hi 44°F Lo 38°F | Hi 39°F Lo 33°F | Hi 34°F Lo 27°F |
| 15 mph | 15 mph | 14 mph | 13 mph | 11 mph | 9 mph | 9 mph | 10 mph | 12 mph | 13 mph | 14 mph | 14 mph |
| 1.8 in | 1.7 in | 1.7 in | 1.5 in | 1.2 in | 1 in | 1 in | 1.3 in | 1.9 in | 1.6 in | 1.5 in | 1.5 in |
| 81% | 81% | 79% | 78% | 74% | 76% | 78% | 79% | 81% | 81% | 80% | 80% |
| 66% | 68% | 70% | 68% | 62% | 65% | 65% | 62% | 67% | 64% | 63% | 59% |
| 29.5 in | 29.5 in | 29.6 in | 29.8 in | 29.9 in | 29.9 in | 29.8 in | 29.8 in | 29.6 in | 29.6 in | 29.5 in | 29.5 in |
| 15 | 11 | 14 | 19 | 24 | 24 | 25 | 23 | 20 | 22 | 18 | 16 |
| 13 | 13 | 14 | 10 | 7 | 6 | 6 | 8 | 10 | 9 | 11 | 12 |
| 3 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 1 |
| 30 | 26 | 24 | 26 | 35 | 28 | 28 | 33 | 25 | 33 | 31 | 38 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 2°C Lo -2°C | Hi 2°C Lo -2°C | Hi 3°C Lo -1°C | Hi 6°C Lo 1°C | Hi 9°C Lo 4°C | Hi 12°C Lo 8°C | Hi 14°C Lo 9°C | Hi 13°C Lo 9°C | Hi 10°C Lo 6°C | Hi 7°C Lo 3°C | Hi 4°C Lo 1°C | Hi 1°C Lo -3°C |
| 24 km/h | 24 km/h | 23 km/h | 21 km/h | 18 km/h | 15 km/h | 15 km/h | 16 km/h | 20 km/h | 20 km/h | 22 km/h | 22 km/h |
| 46 mm | 42 mm | 42 mm | 37 mm | 31 mm | 24 mm | 26 mm | 32 mm | 49 mm | 40 mm | 38 mm | 38 mm |
| 81% | 81% | 79% | 78% | 74% | 76% | 78% | 79% | 81% | 81% | 80% | 80% |
| 66% | 68% | 70% | 68% | 62% | 65% | 65% | 62% | 67% | 64% | 63% | 59% |
| 998 mb | 998 mb | 1004 mb | 1010 mb | 1012 mb | 1013 mb | 1010 mb | 1008 mb | 1003 mb | 1003 mb | 1001 mb | 1000 mb |
| 15 | 11 | 14 | 19 | 24 | 24 | 25 | 23 | 20 | 22 | 18 | 16 |
| 13 | 13 | 14 | 10 | 7 | 6 | 6 | 8 | 10 | 9 | 11 | 12 |
| 3 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 1 |
| 30 | 26 | 24 | 26 | 35 | 28 | 28 | 33 | 25 | 33 | 31 | 38 |
| 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.