San Juan weather by month & the best time to visit
🇵🇷 Puerto Rico · major coastal city · tropical — wet & dry seasons climate
The best time to visit San Juan is February — its sunniest month (Sunshine Score 86/100), with January and March close behind. San Juan averages about 2,619 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 45 mm of rain in February.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 2,619
- Sunniest month
- February
- Peak score
- 86/100
- Rain / year
- 1,207 mm
- Midday UV at peak
- 10 (very high)
- Sea at warmest
- 31°C / 88°F
- Population
- 2.5M
- Elevation
- Sea level
When is the best time to visit San Juan?
For sunshine, the best time to visit San Juan is February, then January and March. The dullest month is September (67/100, 162 mm of rain). The full month-by-month picture is in the table below.
How sunny is San Juan?
San Juan gets a lot of sun: around 2,619 hours a year. February (86/100) is noticeably better than September (67). It ranks #6 of 7 destinations in Puerto Rico for annual sunshine, below the national median of 2,898 hours. The year's 1,207 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 85 | 28° / 82°F | 23° / 73°F | 51 mm | 7 | 27° / 81°F |
| February | 86 | 28° / 82°F | 23° / 73°F | 45 mm | 9 | 27° / 81°F |
| March | 83 | 28° / 82°F | 23° / 73°F | 61 mm | 10 | 27° / 81°F |
| April | 80 | 29° / 84°F | 24° / 75°F | 77 mm | 10 | 27° / 81°F |
| May | 71 | 30° / 86°F | 25° / 77°F | 129 mm | 10 | 29° / 84°F |
| June | 78 | 30° / 86°F | 26° / 79°F | 90 mm | 10 | 30° / 86°F |
| July | 76 | 30° / 86°F | 26° / 79°F | 100 mm | 10 | 30° / 86°F |
| August | 71 | 30° / 86°F | 27° / 81°F | 130 mm | 10 | 30° / 86°F |
| September | 67 | 30° / 86°F | 27° / 81°F | 162 mm | 10 | 30° / 86°F |
| October | 67 | 30° / 86°F | 26° / 79°F | 161 mm | 9 | 31° / 88°F |
| November | 69 | 29° / 84°F | 25° / 77°F | 137 mm | 7 | 30° / 86°F |
| December | 83 | 28° / 82°F | 24° / 75°F | 64 mm | 7 | 29° / 84°F |
Sea temperature in San Juan by month
The sea off San Juan is warmest in October at around 31°C / 88°F, and coolest in January at 27°C / 81°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See San Juan on the interactive sunshine globe →
Nearby places for sunshine
- Charlotte Amalie U.S. Virgin Islands · 109 km · best in Feb · 3,108 h sun/yr
- Christiansted U.S. Virgin Islands · 151 km · best in Feb · 3,158 h sun/yr
- Punta Cana Dominican Republic · 250 km · best in Feb · 2,882 h sun/yr
- Sint Maarten Sint Maarten · 309 km · best in Feb · 3,131 h sun/yr
- Basseterre St. Kitts & Nevis · 369 km · best in Feb · 3,109 h sun/yr
- Santo Domingo Dominican Republic · 387 km · best in Feb · 2,867 h sun/yr
Nearest destinations
- Ceiba Puerto Rico · 44 km · 2,898 h sun/yr · best in Feb
- Vieques Puerto Rico · 63 km · 2,898 h sun/yr · best in Feb
- Culebra Puerto Rico · 75 km · 2,898 h sun/yr · best in Feb
- Ponce Puerto Rico · 76 km · 2,619 h sun/yr · best in Feb
- Aguadilla Puerto Rico · 119 km · 2,966 h sun/yr · best in Feb
Head-to-head
How San Juan compares month by month: San Juan vs Punta Cana · San Juan vs Charlotte Amalie · San Juan vs Christiansted · all comparisons
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