Sosúa Weather in September
During September, Sosúa experiences very high daytime temperatures of 30°C (86°F) and cooler nights around 25°C (77°F). Expect quite a bit of rainfall. Around 75 mm (3 in) is typical.
Rainfall in Sosúa in September
Typically around 15 days of rainfall are expected, averaging 75 mm (3 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Sosúa in September
In September, Sosúa sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 25°C (77°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning. Keep in mind that temperatures can exceed these averages. Dress for the heat and stay hydrated, especially during peak sun hours.
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
At 29°C (84°F), the water is very warm — more like a heated pool than the sea. Great for those who like warm water, though some may find it less refreshing on a hot day.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Sosúa. 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 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
75 mm (3 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.
- The warmest day in September was on September 19, 2009, with a maximum of 37°C (99°F).
- The lowest daytime temperature in September was 25°C (77°F), recorded on September 19, 2022.
- The lowest overnight temperature recorded in September was 19°C (66°F) (September 27, 2018).
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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tolerable
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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.
