Santo Domingo climate

Name: Santo Domingo
Address: DO

Santo Domingo is warmest in July, with average highs of 30 °C, and coldest in February, when nights average 20 °C. August is the wettest month (131 mm) and February the driest (31 mm). Figures are 1991–2020 climate normals.

Across a full year Santo Domingo averages 1,001 mm of rain and 363 days above 25 °C.

Dominican Republic · population 2,201,941 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 30 °C
Coldest month February 20 °C
Driest month February 31 mm
Wettest month August 131 mm
Least cloud February 36 % cloud
Hottest on record July 34 °C
Coldest on record January 15 °C
Warmest sea September 29 °C

What to expectSanto Domingo through the year

Santo Domingo changes little through the year. Average daily highs stay between 28 and 30 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 363 days a year reach 25 °C, 92 of them reach 30 °C. The warmest reading in the 1991–2020 record is 34 °C, in July.

Rain is strongly seasonal. August averages 131 mm against 31 mm in February — 4.2 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Santo Domingo is warmest in September at 29 °C and coldest in February at 27 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	27.5 °C	33 mm	38 %
February	28.0 °C	31 mm	36 %
March	28.5 °C	39 mm	41 %
April	29.1 °C	63 mm	46 %
May	29.3 °C	120 mm	63 %
June	29.8 °C	109 mm	64 %
July	30.3 °C	112 mm	57 %
August	30.3 °C	131 mm	60 %
September	29.9 °C	127 mm	62 %
October	29.3 °C	117 mm	60 %
November	28.3 °C	77 mm	51 %
December	27.8 °C	42 mm	41 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	27.5 °C	20.5 °C	23.5 °C	30.5 °C	15.2 °C	31	0
February	28.0 °C	20.4 °C	23.7 °C	32.1 °C	16.6 °C	28	1
March	28.5 °C	20.7 °C	24.2 °C	32.2 °C	16.5 °C	31	2
April	29.1 °C	21.6 °C	24.9 °C	33.3 °C	18.2 °C	30	5
May	29.3 °C	22.5 °C	25.6 °C	32.4 °C	19.1 °C	31	8
June	29.8 °C	23.2 °C	26.2 °C	33.9 °C	20.8 °C	30	13
July	30.3 °C	23.4 °C	26.4 °C	34.1 °C	21.7 °C	31	20
August	30.3 °C	23.6 °C	26.5 °C	33.9 °C	21.4 °C	31	20
September	29.9 °C	23.5 °C	26.2 °C	33.5 °C	21.2 °C	30	15
October	29.3 °C	23.0 °C	25.7 °C	32.8 °C	20.6 °C	31	7
November	28.3 °C	22.2 °C	24.8 °C	32.8 °C	19.1 °C	30	1
December	27.8 °C	21.2 °C	24.0 °C	30.6 °C	17.3 °C	30	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	33 mm	11	11 h/day	38 %	78 %	14 km/h	26.8 °C
February	31 mm	10	12 h/day	36 %	76 %	14 km/h	26.5 °C
March	39 mm	12	12 h/day	41 %	74 %	15 km/h	26.6 °C
April	63 mm	15	13 h/day	46 %	76 %	14 km/h	27.0 °C
May	120 mm	20	13 h/day	63 %	80 %	13 km/h	27.7 °C
June	109 mm	21	13 h/day	64 %	81 %	13 km/h	28.3 °C
July	112 mm	21	13 h/day	57 %	80 %	13 km/h	28.4 °C
August	131 mm	21	13 h/day	60 %	81 %	13 km/h	28.7 °C
September	127 mm	20	12 h/day	62 %	83 %	12 km/h	29.1 °C
October	117 mm	21	12 h/day	60 %	84 %	12 km/h	29.0 °C
November	77 mm	15	11 h/day	51 %	82 %	13 km/h	28.4 °C
December	42 mm	12	11 h/day	41 %	80 %	14 km/h	27.5 °C

How Santo Domingo compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Santo Domingo	30 °C	20 °C	1,001 mm	363
San Pedro de Macorís · Dominican Republic	31 °C	22 °C	737 mm	364
La Romana · Dominican Republic	32 °C	22 °C	673 mm	365
Santiago de los Caballeros · Dominican Republic	33 °C	19 °C	712 mm	350
Pétionville · Haiti	31 °C	19 °C	1,532 mm	363
Delmas · Haiti	33 °C	21 °C	1,454 mm	364
Port-au-Prince · Haiti	34 °C	21 °C	1,454 mm	365

Where Santo Domingo ranks

Ranking	Position	Value
The warmest places in North America in December	35th of 50	28 °C
The warmest places in North America in January	36th of 50	28 °C
The warmest places in North America in November	38th of 50	28 °C
The warmest places in North America in February	45th of 50	28 °C
The warmest places in North America in October	45th of 50	29 °C

Planning a trip? See the best time to visit Santo Domingo.

QuestionsCommon questions about Santo Domingo’s climate

When is the best time to visit Santo Domingo?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, July is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Santo Domingo get?

In July, the warmest month, daily highs average 30 °C. About 92 days a year pass 30 °C. The highest value in the 1991–2020 record is 34 °C.

How cold does it get in winter?

Nights average 20 °C in February, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Santo Domingo?

August, averaging 131 mm over 21 days with rain. The driest month is February with 31 mm. The year as a whole averages 1,001 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Santo Domingo rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 18.472°, -69.892° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.