San Juan Weather in May
Puerto Rico · 30-year monthly averages
🤔 Fair time to visit
May in San Juan is hot, with average daytime highs around 31°C (87°F) and nighttime lows near 24°C (76°F). Expect roughly 141mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.
Avg high
31°C
87°F
Avg low
24°C
76°F
Rainfall
141mm
rainy
Rainy days
12
days with ≥1mm
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
- compact umbrella or rain jacket
May vs the rest of the year
FAQ
- How hot is San Juan in May?
- May in San Juan is hot, with average daytime highs around 31°C (87°F) and nighttime lows near 24°C (76°F). Expect roughly 141mm of precipitation spread over about 12 rainy days, and this is one of the wetter months.
- Does it rain a lot in San Juan in May?
- San Juan sees around 141mm of precipitation in May on average — rainy by global standards.
- Is May a good time to visit San Juan?
- May is a workable month to visit San Juan, but expect some weather trade-offs.