Culebra Weather in September
September in Culebra typically sees daytime highs of 30°C (86°F) and nighttime lows of 27°C (81°F). As the wettest month of the year, expect more rainfall than other months.
Rainfall in Culebra in September
This month brings the peak rainfall of the year, with heavy showers. Be sure to have a poncho ready to manage the downpours. Typically, you can expect about 18 days of rain this month, with 159 mm (6.3 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Culebra in September
Temperatures in Culebra in September top out at 30°C (86°F) and drop to 27°C (81°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. 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.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Culebra. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Culebra's climate page.
Culebra Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
60%
Precipitation
159 mm (6.3 in)
Rainy days
18 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Culebra typically stay consistent throughout September, with daily highs averaging around 30°C (86°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 Culebra in September
Browse day-by-day weather records for Culebra spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Culebra historical weather extremes in September
According to our 49 years of weather records for Culebra, the following extremes were recorded between 1976 and 2025.
- The warmest day in September was on September 7, 2007, with a maximum of 35°C (95°F).
- On September 4, 1979, Culebra saw its coldest September day with temperatures maxing out at 26°C (79°F).
- The lowest overnight temperature recorded in September was 21°C (70°F) (September 4, 1979).
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 Culebra in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!What To Do in Culebra 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 Culebra's climate page.
See the full Culebra climate overview or explore weather in Puerto Rico.
