Weather World
San Juan Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 80°F Lo 65°F | Hi 80°F Lo 67°F | Hi 81°F Lo 67°F | Hi 81°F Lo 65°F | Hi 80°F Lo 62°F | Hi 77°F Lo 59°F | Hi 77°F Lo 57°F | Hi 77°F Lo 57°F | Hi 78°F Lo 58°F | Hi 78°F Lo 59°F | Hi 78°F Lo 60°F | Hi 79°F Lo 63°F |
| 6 mph | 6 mph | 6 mph | 6 mph | 5 mph | 5 mph | 5 mph | 5 mph | 6 mph | 6 mph | 6 mph | 6 mph |
| 0.6 in | 0.5 in | 0.4 in | 0.1 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0.1 in |
| 70% | 70% | 69% | 68% | 66% | 65% | 63% | 62% | 61% | 62% | 64% | 68% |
| 34% | 39% | 31% | 17% | 6% | 4% | 4% | 4% | 8% | 9% | 10% | 21% |
| 29.9 in | 29.9 in | 29.9 in | 29.9 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 | 27 | 30 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 5 |
| 253 | 205 | 284 | 332 | 365 | 352 | 365 | 368 | 352 | 347 | 349 | 326 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 27°C Lo 19°C | Hi 27°C Lo 20°C | Hi 27°C Lo 20°C | Hi 27°C Lo 18°C | Hi 26°C Lo 17°C | Hi 25°C Lo 15°C | Hi 25°C Lo 14°C | Hi 25°C Lo 14°C | Hi 25°C Lo 14°C | Hi 26°C Lo 15°C | Hi 26°C Lo 16°C | Hi 26°C Lo 17°C |
| 10 km/h | 9 km/h | 9 km/h | 9 km/h | 8 km/h | 8 km/h | 8 km/h | 9 km/h | 9 km/h | 9 km/h | 10 km/h | 10 km/h |
| 14 mm | 13 mm | 9 mm | 2 mm | 0 mm | 0 mm | 0 mm | 0 mm | 0 mm | 1 mm | 0 mm | 4 mm |
| 70% | 70% | 69% | 68% | 66% | 65% | 63% | 62% | 61% | 62% | 64% | 68% |
| 34% | 39% | 31% | 17% | 6% | 4% | 4% | 4% | 8% | 9% | 10% | 21% |
| 1013 mb | 1013 mb | 1013 mb | 1014 mb | 1014 mb | 1015 mb | 1015 mb | 1015 mb | 1015 mb | 1014 mb | 1014 mb | 1014 mb |
| 29 | 27 | 30 | 30 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 31 |
| 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 5 |
| 253 | 205 | 284 | 332 | 365 | 352 | 365 | 368 | 352 | 347 | 349 | 326 |
| 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.