Weather World
Old San Juan Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 80°F Lo 72°F | Hi 80°F Lo 72°F | Hi 81°F Lo 72°F | Hi 82°F Lo 74°F | Hi 84°F Lo 75°F | Hi 85°F Lo 77°F | Hi 86°F Lo 78°F | Hi 86°F Lo 78°F | Hi 86°F Lo 78°F | Hi 85°F Lo 77°F | Hi 83°F Lo 75°F | Hi 81°F Lo 74°F |
| 9 mph | 9 mph | 9 mph | 9 mph | 9 mph | 9 mph | 10 mph | 9 mph | 8 mph | 7 mph | 7 mph | 9 mph |
| 1.7 in | 3 in | 2.9 in | 3.5 in | 5.1 in | 2.7 in | 3.3 in | 4.4 in | 7.1 in | 5.9 in | 6.1 in | 3.4 in |
| 79% | 78% | 77% | 78% | 79% | 79% | 79% | 79% | 79% | 79% | 80% | 79% |
| 45% | 44% | 43% | 44% | 49% | 47% | 50% | 48% | 45% | 45% | 50% | 47% |
| 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 29.9 in | 30.0 in |
| 27 | 23 | 25 | 23 | 19 | 21 | 21 | 19 | 14 | 16 | 17 | 25 |
| 4 | 5 | 6 | 7 | 12 | 9 | 10 | 12 | 16 | 15 | 13 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 |
| 166 | 159 | 175 | 170 | 134 | 153 | 143 | 151 | 160 | 161 | 131 | 150 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 27°C Lo 22°C | Hi 27°C Lo 22°C | Hi 27°C Lo 22°C | Hi 28°C Lo 23°C | Hi 29°C Lo 24°C | Hi 30°C Lo 25°C | Hi 30°C Lo 25°C | Hi 30°C Lo 25°C | Hi 30°C Lo 25°C | Hi 29°C Lo 25°C | Hi 28°C Lo 24°C | Hi 27°C Lo 23°C |
| 14 km/h | 15 km/h | 14 km/h | 14 km/h | 14 km/h | 15 km/h | 16 km/h | 15 km/h | 12 km/h | 11 km/h | 12 km/h | 14 km/h |
| 44 mm | 75 mm | 74 mm | 88 mm | 129 mm | 69 mm | 84 mm | 111 mm | 180 mm | 151 mm | 156 mm | 85 mm |
| 79% | 78% | 77% | 78% | 79% | 79% | 79% | 79% | 79% | 79% | 80% | 79% |
| 45% | 44% | 43% | 44% | 49% | 47% | 50% | 48% | 45% | 45% | 50% | 47% |
| 1017 mb | 1017 mb | 1016 mb | 1015 mb | 1016 mb | 1016 mb | 1017 mb | 1015 mb | 1013 mb | 1013 mb | 1013 mb | 1015 mb |
| 27 | 23 | 25 | 23 | 19 | 21 | 21 | 19 | 14 | 16 | 17 | 25 |
| 4 | 5 | 6 | 7 | 12 | 9 | 10 | 12 | 16 | 15 | 13 | 6 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 |
| 166 | 159 | 175 | 170 | 134 | 153 | 143 | 151 | 160 | 161 | 131 | 150 |
| 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.