San Juan, Puerto Rico 14-Day Forecast
Puerto Rico 🇵🇷
The 14-day forecast for San Juan is temporarily unavailable - please check back shortly. Meanwhile, the monthly averages below give a reliable picture of what to expect.
San Juan 14-day outlook: the story
December to March is the sweet spot for San Juan - humidity and rainfall are at their lowest, which is what actually varies here. Expect 83°F (28°C) in the afternoon and around 15 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in December.
For typical conditions month by month, see the San Juan climate & average temperatures guide.
Average temperatures in San Juan by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 83° | 71° | 14 | 2.1 in | 10.8 h/day | 11.1 h | 45% | 77% |
| February | 83° | 72° | 15 | 2.4 in | 10.8 h/day | 11.5 h | 53% | 75% |
| March | 84° | 72° | 15 | 2.2 in | 11.1 h/day | 12.0 h | 48% | 73% |
| April | 85° | 73° | 16 | 3.1 in | 11.7 h/day | 12.5 h | 55% | 74% |
| May | 87° | 75° | 17 | 3.1 in | 11.9 h/day | 13.0 h | 56% | 75% |
| June | 89° | 76° | 17 | 2.4 in | 12.2 h/day | 13.2 h | 55% | 75% |
| July | 88° | 77° | 19 | 3.1 in | 12.0 h/day | 13.1 h | 63% | 76% |
| August | 88° | 77° | 19 | 3.6 in | 11.5 h/day | 12.7 h | 63% | 78% |
| September | 88° | 77° | 22 | 6.1 in | 10.8 h/day | 12.2 h | 74% | 81% |
| October | 87° | 76° | 22 | 4.9 in | 10.3 h/day | 11.7 h | 70% | 82% |
| November | 85° | 74° | 20 | 5.3 in | 9.7 h/day | 11.2 h | 66% | 82% |
| December | 83° | 73° | 18 | 2.4 in | 10.6 h/day | 11.0 h | 56% | 79% |
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