Sosúa Weather in September
In Sosúa, September brings very high daytime temperatures around 30°C (86°F), with nights cooling to 25°C (77°F). Expect quite a bit of rainfall this month.
Rainfall in Sosúa in September
Based on our climate data of the past 30 years, about 15 days of rain are anticipated, with 74 mm (2.9 in) on average. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Sosúa in September
Temperatures in Sosúa in September top out at 30°C (86°F) and drop to 25°C (77°F) overnight. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably. This month tends to be the warmest of the year. Light, comfortable clothing will serve you well.
Wind Speed in Sosúa in September
Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in September
The water reaches 29°C (84°F) this month. It's on the warm side, which suits people who prefer that, but don't expect a cooling dip if the air temperature is also high.Our weather planner can help you find worldwide destinations with pleasant weather during this period. February, March, April, May and October typically offer the best weather for Sosúa.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the Dominican Republic, check out our Sosúa's climate page.
Sosúa Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Water Temperature
29°C (84°F) *
Chance of Rain
51%
Precipitation
74 mm (2.9 in)
Rainy days
15 days
Humidity
78% *
Windspeed
3 m/s (6 knots) *
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Sosúa 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
47-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 Sosúa in September
Browse day-by-day weather records for Sosúa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sosúa historical weather extremes in September
Based on weather observations in Sosúa between 1999 and 2025, these are the recorded extremes during September.
- Sosúa recorded its highest September temperature of 37°C (99°F) on September 15, 2024.
- Sosúa experienced its chilliest September day on September 19, 2022, reaching only 25°C (77°F).
- The coldest night in September in Sosúa was on September 27, 2018, with a minimum of 19°C (66°F).
Best Places in the Dominican Republic in September
Find out more about the weather in the Dominican Republic and which places have the best travel conditions in this month. See all of the Dominican Republic in September →
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What to Wear in Sosúa 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). Rain is likely on several days, so bring a good rain jacket. With water temperatures around 29°C (84°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes.What To Do in Sosúa 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 the Dominican Republic, check out our Sosúa's climate page.
Temperature Rainfall Humidity Wind Speed Water Temp
See the full Sosúa climate overview or explore weather in the Dominican Republic.
