Puerto Rico in September

September is Puerto Rico's weakest month (rank 12 of 12): its 2 destinations average 71/100, led by Rincón at 80 — 38°C and 10 rainy days — while San Juan trails at 61 with 147 mm of rain.

#12 of 12 months for Puerto Rico · 2 destinations · updated September 2026 · climate normals from ERA5 reanalysis

🇵🇷 Puerto Rico, month by month

71/100 in September
  1. 85Jan
  2. 84Feb
  3. 84Mar
  4. 82Apr
  5. 79May
  6. 79Jun
  7. 75Jul
  8. 73Aug
  9. 71Sep
  10. 74Oct
  11. 75Nov
  12. 83Dec

Where in Puerto Rico in September

#PlaceTypeFeels-like highRainComfortAt its best
1RincónBeach38°C172 mm · 10 days80 tier A—
2San JuanCity38°C147 mm · 13 days61 tier C—

Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means September is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.

What's on in Puerto Rico in September

  • Bioluminescent bay nights · San Juan · 1 Jan – 31 Dec

Better months for Puerto Rico

January · 85/100February · 84/100March · 84/100
← Puerto Rico in AugustPuerto Rico in October →Best time to visit Puerto Rico, month by monthCompare: Rincón vs San Juan in September