SeasonMapPuerto 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
Where in Puerto Rico in September
| # | Place | Type | Feels-like high | Rain | Comfort | At its best |
|---|---|---|---|---|---|---|
| 1 | Rincón | Beach | 38°C | 172 mm · 10 days | 80 tier A | — |
| 2 | San Juan | City | 38°C | 147 mm · 13 days | 61 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