San Juan, Puerto Rico — Climate
San Juan Weather
San Juan, like all of Puerto Rico, enjoys warm, sunny days for most of the year. The tropical climate ensures an average temperature of 80°F (26°C) with humidity running continuously at around 80%. The rainy season peaks in August, and rain can be extremely heavy. Between August and November the island is vulnerable to hurricanes.
Average Temperatures and Rainfall in San Juan
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (inches) | 3.5 | 2.7 | 2.9 | 3.7 | 5.9 | 5.9 | 5.1 | 6.1 | 5.5 | 6.0 | 6.0 | 5.7 |
| Rainfall (cm) | 89 | 69 | 74 | 94 | 150 | 150 | 130 | 155 | 140 | 152 | 152 | 145 |
| Ave Temp (°C) | 24 °C | 24 °C | 25 °C | 26 °C | 27 °C | 28 °C | 28 °C | 28 °C | 28 °C | 27 °C | 26 °C | 25 °C |
| Min Temp (°C) | 22 °C | 22 °C | 22 °C | 23 °C | 24 °C | 25 °C | 25 °C | 25 °C | 25 °C | 24 °C | 23 °C | 23 °C |
| Max Temp (°C) | 28 °C | 28 °C | 29 °C | 30 °C | 30 °C | 31 °C | 31 °C | 31 °C | 31 °C | 31 °C | 29 °C | 29 °C |
| Ave Temp (°F) | 76 °F | 76 °F | 77 °F | 79 °F | 80 °F | 82 °F | 82 °F | 82 °F | 82 °F | 81 °F | 79 °F | 77 °F |
| Min Temp (°F) | 71 °F | 71 °F | 71 °F | 73 °F | 75 °F | 77 °F | 77 °F | 77 °F | 77 °F | 76 °F | 74 °F | 73 °F |
| Max Temp (°F) | 83 °F | 83 °F | 84 °F | 86 °F | 87 °F | 88 °F | 88 °F | 88 °F | 88 °F | 88 °F | 85 °F | 84 °F |
| Good Weather | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | Yes | Yes |
