Weather in Santo Domingo

Santo Domingo is in Dominican Republic at 18.5°N. The 2001–2020 NASA POWER daily record describes a mild oceanic climate. Rain is about 581 mm of rain spread through the year. The wettest month is November at 68 mm; the driest is February at 21 mm.

August is the warmest month (average 28.3°C, high 31.6°C) and January is the coolest (average 25.4°C, low 21.4°C). From the coolest night in January (21.3°C) to the hottest afternoon in August (31.6°C), the raw range is 10.3°C. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are January, February, and March.

How warm Santo Domingo gets

The heat peaks in August, when the typical afternoon is 31.6°C. The opposite pole is January, when mornings average 21.4°C.

Mean high across all twelve months is 30.7°C and mean low is 23.3°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

Rainfall pattern

Annual rainfall is 581 mm. November leads at 68 mm; February is lightest at 21 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. November averages 11 such days; February averages 5.

Distinctive months in Santo Domingo

January is the coolest month, with lows around 21.4°C and highs near 29.4°C. Rainfall is 24 mm. February is the driest month, averaging only 21 mm across 5 rainy days. Highs sit near 30.0°C.

Peak heat arrives in August: 31.6°C by day, 25.0°C at night, and 77% humidity. November is the wettest month — 68 mm and 11 rainy days, with 78% humidity.

Best months to visit Santo Domingo

The three months with the highest comfort score are January, February, and March: January (25.4°C average, 24 mm, 75% humidity); February (25.6°C average, 21 mm, 73% humidity); March (26.1°C average, 22 mm, 70% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you prefer the hottest stretch, that is August. The coolest stretch is January.

How Santo Domingo compares inside Dominican Republic

Santo Domingo is the only Dominican Republic city in this dataset, so the figures on this page are the national sample we publish. They still come from the same NASA POWER daily series (2001–2020) used everywhere else on the site.