Santiago de los Caballeros Weather in September

In Santiago de los Caballeros, September brings very high daytime temperatures around 33°C (91°F), with nights cooling to 22°C (72°F). Expect quite a bit of rainfall this month.

Rainfall in Santiago de los Caballeros in September

On average, there are about 15 days with rain during this month, averaging 97 mm (3.8 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Santiago de los Caballeros in September

In September, expect very high temperatures in Santiago de los Caballeros, with highs of 33°C (91°F) and lows of 22°C (72°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. With overnight lows of 22°C (72°F), evenings stay pleasantly warm.

Sunshine in Santiago de los Caballeros in September

Expect a lot of sunshine this month, with about 230 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Santiago de los Caballeros 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.

September in Santiago de los Caballeros can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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For a detailed overview over the year and the best time to visit the Dominican Republic, check out our Santiago de los Caballeros's climate page.

Santiago de los Caballeros Temperature in September

Min Temperature 22°C (72°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 51%  

Precipitation 97 mm (3.8 in)  

Rainy days 15 days  

Humidity 74% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 230 hours *  

Percentage Sunshine *  

* Data from: Santiago, the Dominican Republic (2 KM, 1 Miles).

Daily Historical Temperatures

47-year average (1976-2025)

Based on our historical records, temperatures in Santiago de los Caballeros typically stay consistent throughout September, with daily highs averaging around 33°C (91°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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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Historical weather for Santiago de los Caballeros in September

Browse day-by-day weather records for Santiago de los Caballeros 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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Santiago de los Caballeros historical weather extremes in September

According to our 26 years of weather records for Santiago de los Caballeros, the following extremes were recorded between 1999 and 2025.

• Santiago de los Caballeros recorded its highest September temperature of 37°C (99°F) on September 2, 2025.
• The lowest daytime temperature in September was 24°C (75°F), recorded on September 19, 2022.
• Santiago de los Caballeros registered its coldest September night on September 27, 2018, with temperatures dropping to 19°C (66°F).

What to Wear in Santiago de los Caballeros 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. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Santiago de los Caballeros in September

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

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 Santiago de los Caballeros's climate page.

More climate data for Santiago de los Caballeros

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Santiago de los Caballeros climate overview or explore weather in the Dominican Republic.