Culebra Weather in September
September in Culebra sees daytime temperatures around 30°C (86°F) and lows of 24°C (75°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Culebra in September
As part of the rainy season, Culebra sees around 23 days of rain in September, with an average of 307 mm (12 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Culebra in September
In September, expect very high temperatures in Culebra, with highs of 30°C (86°F) and lows of 24°C (75°F) at night. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Culebra in September
You can expect a moderate amount of sunlight, with approximately 158 hours. Even though this month is part of the wet season, you can still see the sun occasionally.If you prefer dry days with pleasant 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 Costa Rica, check out our Culebra's climate page.
Culebra Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Chance of Rain
77%
Precipitation
307 mm (12 in)
Rainy days
23 days
Humidity
86% *
Sunshine
158 hours *
Percentage Sunshine
*
Daily Historical Temperatures
41-year average (1977-2025)
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 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
41-year average (1977-2025)
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 26 years of weather records for Culebra, the following extremes were recorded between 1999 and 2025.
- The warmest day in September was on September 7, 2009, with a maximum of 35°C (95°F).
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 26, 2010.
- Culebra registered its coldest September night on September 25, 2006, with temperatures dropping to 20°C (68°F).
- The heaviest September precipitation occurred on September 7, 2021, when 208 mm (8.2 in) of precipitation fell.
Best Places in Costa Rica in September
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in September →
perfect weather
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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! It won't hurt to bring your sunglasses along, as you'll see some sunny periods.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 Costa Rica, check out our Culebra's climate page.
Temperature Rainfall Sunshine Humidity
See the full Culebra climate overview or explore weather in Costa Rica.
