Carmelita Weather in September
Carmelita in September sees very high daytime temperatures of 31°C (88°F) and nighttime lows of 26°C (79°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.
Rainfall in Carmelita in September
This month is characterized by heavy rain, often falling intensely. Equip yourself with a poncho to stay protected from the rain. Historically, approximately 18 days this month are expected to have rain, averaging 163 mm (6.4 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Carmelita in September
Temperatures in Carmelita in September top out at 31°C (88°F) and drop to 26°C (79°F) overnight. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 26°C (79°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference. Remember, these are typical temperatures, and certain days could be even hotter. Ensure you wear appropriate clothing to handle the warmth.
Sunshine in Carmelita in September
Enjoy a sunny month with about 236 hours of sunshine, the clear skies make Carmelita even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April and December typically offer the best weather for Carmelita.
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 Carmelita's climate page.
Carmelita Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Chance of Rain
61%
Precipitation
163 mm (6.4 in)
Rainy days
18 days
Humidity
76% *
Sunshine
236 hours *
Percentage Sunshine
64% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Carmelita typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Carmelita in September
Browse day-by-day weather records for Carmelita spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Carmelita historical weather extremes in September
Based on 49 years of weather observations in Carmelita between 1976 and 2025, these are the recorded extremes.
- Carmelita recorded its highest September temperature of 34°C (93°F) on September 24, 2017.
- The coldest September day was on September 13, 1985, with a maximum of 26°C (79°F).
- The lowest overnight temperature recorded in September was 21°C (70°F) (September 16, 2019).
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 →
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What to Wear in Carmelita in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Carmelita 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 Carmelita's climate page.
Temperature Rainfall Sunshine Humidity
See the full Carmelita climate overview or explore weather in Puerto Rico.
