Santo Domingo Weather in September

September in Santo Domingo brings very high temperatures around 31°C (88°F) during the day, dropping to 24°C (75°F) at night, with quite a bit of rainfall expected, averaging around 151 mm (5.9 in) for the month.

Rainfall in Santo Domingo in September

Past climate data indicates that roughly 14 days will see rain, totalling around 151 mm (5.9 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Santo Domingo in September

In September, Santo Domingo sees very high temperatures, with highs of 31°C (88°F). Nights drop to around 24°C (75°F). For most visitors, the main thing to prepare for is the heat during the day. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Santo Domingo in September

Expect sunny days throughout the month, with an estimated 218 hours of sunshine. This makes it a pleasant time to visit Santo Domingo.

Wind Speed in Santo Domingo in September

September sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.

Average water temperature in September

The water is 29°C (84°F) — very warm by most standards. Comfortable to swim in, but not particularly refreshing if you're looking to cool off.

September in Santo Domingo has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the Dominican Republic, check out our Santo Domingo's climate page.

Santo Domingo Temperature in September

Min Temperature 24°C (75°F)  

Max Temperature 31°C (88°F)  

Water Temperature 29°C (84°F)  

Chance of Rain 48%  

Precipitation 151 mm (5.9 in)  

Rainy days 14 days  

Humidity 85%  

Windspeed 2 m/s (4 knots)  

Sunshine 218 hours  

Percentage Sunshine  

Daily Historical Temperatures

47-year average (1976-2025)

Based on our historical records, temperatures in Santo Domingo typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 24°C (75°F).

Average temperatures in September

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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

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Historical weather for Santo Domingo in September

Browse day-by-day weather records for Santo Domingo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Santo Domingo historical weather extremes in September

Based on 26 years of weather observations (1999-2025), these are the most extreme conditions recorded in Santo Domingo.

• The warmest day in September was on September 25, 2016, with a maximum of 36°C (97°F).
• Santo Domingo experienced its chilliest September day on September 16, 2004, reaching only 25°C (77°F).
• The lowest overnight temperature recorded in September was 21°C (70°F) (September 29, 1999).

What to Wear in Santo Domingo in September

Warm but pleasant conditions in Santo Domingo in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. The water temperature sits at about 29°C (84°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Santo Domingo in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

8/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the Dominican Republic, check out our Santo Domingo's climate page.

More climate data for Santo Domingo

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Santo Domingo climate overview or explore weather in the Dominican Republic.