SeasonMapRincón weather in September
Puerto Rico
September in Rincón: hot, rainy, with clean air — an excellent time to visit.
#12 of 12 months in Rincón · #509 of 1383 destinations to visit in September · comfort 85/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Rincón in September
No notes yet. Open Rincón on the map to add the first one.
Rincón climate normals — September
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Sea temperature | 30°C / 87°F | ♨️ bath-warm |
| Rainfall | 97 mm / 3.8 in | 🌧 rainy |
| Rainy days | 18 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 10.6 h/day | |
| Daylight | 12.2 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 27 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Rincón in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Rincón's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherRincón's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Rincón in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Atlantic hurricane season
1 Jun – 30 NovThe season is also the flat, quiet, cheap half of the year on this coast, which is the trade. Maria in September 2017 is the reference point; mid-August to mid-October is when the Atlantic is most active. Source ↗
Nearby, and something's on
Within 300 km of Rincón — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Rincón?
Rincón in September — FAQ
- Is September a good time to visit Rincón?
- September in Rincón: hot, rainy, with clean air — an excellent time to visit. It ranks #12 of 12 months for Rincón on SeasonMap's comfort score (85/100).
- What is the weather like in Rincón in September?
- In September, Rincón averages a daily high of 30.2°C and a low of 26.5°C, with about 97.4 mm of rain over roughly 17.6 rainy days.
- What is the air quality in Rincón in September?
- Rincón has a mean US Air Quality Index of about 27 in September.
Other months in Rincón
Compare Rincón in September
Warmer or cooler than Rincón in September
Similar destinations in Caribbean — September
Within 300 km: San Juan's Bioluminescent bay nights on 1 Jan – 31 Dec, and Punta Cana's Turtle nesting on the east coast around 15 Mar – 15 Nov.