September · Dominican Republic
Best time to visit Santo Domingo in September Weather, crowds & prices
Weather in Santo Domingo in September
Average temperature 28°C, 96 mm of rain, about 26 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.3/10
Ranked #9 of 12 months
- Avg temp
- 28°C
- Rainfall
- 96 mm
- Humidity
- 81%
- Days with 6h+ sun
- 26
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Santo Domingo scores 5.3/10 for sightseeing and cultural travel - ranked #9 of 12. Expect around 28°C, 96 mm of rain, and roughly 26 days with 6+ hours of sunshine this month.
Santo Domingo's Zona Colonial is the oldest European-founded city in the Americas, set on the Caribbean.
September in Santo Domingo: mixed conditions, plan around the weather
Days in September average 28°C (82°F) and humidity near 81% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Budget for roughly 96 mm of rain this month — a flexible day or two helps — with about 26 days with 6+ hours of sunshine and 12.1 hours of daylight to work around it.
That is 5.3/10 on the same scale — 9th of 12 months, versus 8/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, February is materially better in Santo Domingo — 2.7 points higher on the same scale.
Frequently asked
- What is the weather like in Santo Domingo in September?
- In September, Santo Domingo averages 28°C, 96 mm of rain, and about 26 days with 6+ hours of sunshine. Its climate-comfort score is 5.3/10.
- Is September a good time to visit Santo Domingo?
- September earns a 5.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Santo Domingo in September?
- Expect about 96 mm of rain in September. Average humidity is 81% and there are about 26 days with 6+ hours of sunshine.
Curated in Santo Domingo
Tickets & experiences
Things to do in Santo Domingo
Santo Domingo, Dominican Republic. Live activities and tours from GetYourGuide, matched to this destination.