San Juan in May
In May, San Juan averages 30°C (86°F) during the day and 24°C (75°F) at night, with frequent rain — about 14 days of the month see precipitation (155 mm total).
Conditions are warm and beach-friendly. Plan for unsettled weather and bring rain gear.
May offers comfortable temperatures in San Juan, with some rain to plan around.
30°C
Avg high
24°C
Avg low
14
Rain days
155 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 May weather
Check the live 10-day forecast and sunrise/sunset.