Santo Domingo weather in September

September in Santo Domingo: sweltering, rainy, with clean air — a gamble, with 21 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Santo Domingo🇩🇴 Dominican Republic · Greater Antilles · City64
  1. 77Jan
  2. 76Feb
  3. 75Mar
  4. 71Apr
  5. 66May
  6. 65Jun
  7. 64Jul
  8. 61Aug
  9. 64Sep
  10. 61Oct
  11. 67Nov
  12. 74Dec

#10 of 12 months in Santo Domingo · #1069 of 1413 destinations to visit in September · comfort 64/100 (tier C)

Days
33°C
Nights
25°C
Wet days
21
Sun
10.4 h
Humidity
81%
Daylight
12 h
Santo Domingo, Dominican Republic
Photo: Sebastian Luna · Pexels

Traveller notes on Santo Domingo in September

Other months in Santo Domingo

Forum posters describe July across the Dominican Republic as very hot, sunny and humid, with warm evenings and occasional showers rather than full days of rain - posters compare typical rain here to Cuba's pattern, heavy but brief, often just 10-30 minutes. Posters are direct that rainy days are relatively rare this time of year, with some describing weeks going by without any rain at all. Posters flag hurricane season as technically running May through November, but consistently note most storms actually cluster around September, making July comparatively low-risk - posters recommending the north coast specifically as a fairly hurricane-resistant option for anyone especially cautious. Posters generally rate July as hot and humid but still a good, deal-friendly time to visit Santo Domingo.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe January in Santo Domingo as a mix of rain and grey skies alongside plenty of blue-sky days - it sits right at the edge of the wetter season, with the broader Dominican dry season (December-April) bringing lower humidity overall. Regulars note that with shifting weather patterns the exact split of sun-to-rain days has gotten harder to predict year to year, though January and February are usually counted among the driest months. Beyond the weather, the Colonial Zone - a UNESCO World Heritage site and the oldest continuously inhabited European settlement in the Americas - is repeatedly named the best base, with plenty of boutique hotel options right in the old streets.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Santo Domingo's card on the map.

Santo Domingo climate normals — September

Daytime high33°C / 92°F🔥 sweltering
Nighttime low25°C / 77°F
Feels like (high)39°C / 102°F
Sea temperature31°C / 87°F♨️ bath-warm
Rainfall96 mm / 3.8 in🌧 rainy
Rainy days21 days
Humidity81%💦 very humid
Dew point25°C / 76°F
Sunshine10.4 h/day
Daylight12.2 h
Wind12 km/h / 8 mph
Air quality (US AQI)47🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Santo Domingo in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 2 of the markets that fill it, one of its worst months for weather(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Santo Domingo's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherSanto Domingo's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in Santo Domingo in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    Georges came ashore near the capital in 1998 and the Ozama backs up long before the wind does anything. The city works straight through it; the airlift and the hotel rates fall anyway. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Santo Domingo — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Santo Domingo?

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Santo Domingo in September — FAQ

Is September a good time to visit Santo Domingo?
September in Santo Domingo: sweltering, rainy, with clean air — a gamble, with 21 rainy days. It ranks #10 of 12 months for Santo Domingo on SeasonMap's comfort score (64/100).
What is the weather like in Santo Domingo in September?
In September, Santo Domingo averages a daily high of 33.4°C and a low of 25.1°C, with about 95.8 mm of rain over roughly 20.5 rainy days.
What is the air quality in Santo Domingo in September?
Santo Domingo has a mean US Air Quality Index of about 47 in September.

Within 300 km: Punta Cana's Turtle nesting on the east coast around 15 Mar – 15 Nov.