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Santiago weather in September 2025
Expect 33°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Santiago in September based on long-term weather averages. There is usually 15 days with some rainfall and 103 mm of average monthly rainfall in September.
- 33°C max day temperature
33 - 7 hours of sunshine per day
- 15 days with some rainfall
15 - 21°C min night temperature
21 - 12 hours of daylight per day
12 - Very High heat & humidity
VH - 103 mm of monthly rainfall
103 - 11+ (Extreme) UV index
11
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Recommended for the Dominican Republic
The September weather guide for Dominican Republic (Santiago) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the Dominican Republic
How hot is it in Santiago in September?
Daytime temperatures usually reach 33°C in Santiago in September with very high heat and humidity, falling to 21°C at night.
How sunny is it in Santiago in September?
There are normally 7 hours of bright sunshine each day in Santiago in September - that's 57% of daylight hours.
Does it rain in Santiago in September?
There are usually 15 days with some rain in Santiago in September and the average monthly rainfall is 103mm.
What is the chance of a hurricane in Santiago in September?
On average 1 day in September in Santiago is likely to be affected by the passage of one or more tropical storms.
Santiago September sunrise & sunset times
Browse the sunrise and sunset times for Santiago in September 2025. Select a month to view Santiago sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 06:28 | 18:57 |
| Monday, 15th September 2025 | 06:30 | 18:45 |
| Tuesday, 30th September 2025 | 06:33 | 18:32 |
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