Rincon Weather in September
Thinking of visiting Rincon in September? Expect very high temperatures reaching 30°C (86°F) during the day, dropping to 27°C (81°F) at night, and be prepared for the wettest month of the year.
Rainfall in Rincon in September
With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. Typically, you can expect about 17 days of rain this month, with 111 mm (4.4 in) on average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Rincon in September
Expect highs of 30°C (86°F) in Rincon in September, with nights dropping to around 27°C (81°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With overnight lows of 27°C (81°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.September in Rincon has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our Rincon's climate page.
Rincon Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
56%
Precipitation
111 mm (4.4 in)
Rainy days
17 days
Daily Historical Temperatures
47-year average (1977-2025)
Based on our historical records, temperatures in Rincon typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for Rincon in September
Browse day-by-day weather records for Rincon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rincon historical weather extremes in September
Our historical data for Rincon spans 1999 to 2025, revealing these weather extremes.
- The hottest September day on record in Rincon reached 37°C (99°F) (September 26, 2012).
- On September 18, 2004, Rincon saw its coldest September day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 21°C (70°F) on September 30, 2014, marking the coldest September night on record.
Best Places in Puerto Rico in September
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in September →
perfect weather
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tolerable
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What to Wear in Rincon in September
Warm but pleasant conditions in Rincon in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in Rincon in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our Rincon's climate page.
See the full Rincon climate overview or explore weather in Puerto Rico.
