San Juan in August
In August, San Juan averages 32°C (90°F) during the day and 25°C (77°F) at night, with frequent rain — about 16 days of the month see precipitation (165 mm total).
Conditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
It's peak hurricane season in San Juan during August. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
32°C
Avg high
25°C
Avg low
16
Rain days
165 mm
Rainfall
San Juan in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 28°C / 82°F | 21°C / 70°F | 75 mm | 11 | — |
| February | 28°C / 82°F | 21°C / 70°F | 55 mm | 9 | — |
| March | 29°C / 84°F | 22°C / 72°F | 55 mm | 9 | — |
| April | 29°C / 84°F | 23°C / 73°F | 110 mm | 11 | — |
| May | 30°C / 86°F | 24°C / 75°F | 155 mm | 14 | — |
| June | 31°C / 88°F | 25°C / 77°F | 130 mm | 14 | — |
| July | 31°C / 88°F | 25°C / 77°F | 150 mm | 16 | — |
| August | 32°C / 90°F | 25°C / 77°F | 165 mm | 16 | — |
| September | 31°C / 88°F | 25°C / 77°F | 145 mm | 15 | — |
| October | 31°C / 88°F | 24°C / 75°F | 130 mm | 13 | — |
| November | 30°C / 86°F | 23°C / 73°F | 140 mm | 13 | — |
| December | 29°C / 84°F | 22°C / 72°F | 110 mm | 12 | — |
Other cities with similar August weather
Check the live 10-day forecast and sunrise/sunset.