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Santiago Weather by Month
Average temperatures, rainfall and humidity for Santiago, Dominican Republic, month by month, built from OpenWeather’s historical records. Use it to see what a typical Santiago month looks like before you travel — then check the live Santiago forecast for the days ahead.
Warmest month
July
33°C average high
Coolest month
February
19°C average low
Wettest month
October
84 mm of rain
Driest month
July
20 mm of rain
Average temperature and rainfall in Santiago by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 28°C | 19°C | 9°C / 34°C | 66 mm | 84% | 8 km/h |
| February | 28°C | 19°C | 11°C / 56°C | 59 mm | 83% | 10 km/h |
| March | 29°C | 19°C | 12°C / 36°C | 83 mm | 80% | 10 km/h |
| April | 30°C | 20°C | 13°C / 34°C | 72 mm | 80% | 11 km/h |
| May | 31°C | 21°C | 13°C / 36°C | 84 mm | 80% | 12 km/h |
| June | 32°C | 22°C | 12°C / 40°C | 38 mm | 78% | 12 km/h |
| July | 33°C | 23°C | 16°C / 38°C | 20 mm | 78% | 13 km/h |
| August | 32°C | 22°C | 14°C / 38°C | 45 mm | 79% | 12 km/h |
| September | 32°C | 22°C | 14°C / 37°C | 64 mm | 82% | 9 km/h |
| October | 31°C | 21°C | 14°C / 36°C | 84 mm | 83% | 8 km/h |
| November | 29°C | 20°C | 13°C / 33°C | 68 mm | 85% | 8 km/h |
| December | 28°C | 19°C | 11°C / 32°C | 66 mm | 86% | 8 km/h |
Best time to visit Santiago
The most comfortable time to visit Santiago is generally December to February, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around October, totalling about 749 mm a year.
Travellers who prefer heat should aim for July, when highs average 33°C. October is the month to avoid if rain would spoil your plans — it averages 84 mm, roughly 4× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Santiago forecast for what is happening now.