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Monthly climate in Santo Domingo, Puerto Rico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santo Domingo features a tropical monsoon climate (Am). Temperatures typically range between 24 °C (76 °F) and 27 °C (81 °F) through the year, but rarely can drop to 18 °C (65 °F) or can rise to as high as 31 °C (89 °F). The average annual precipitation amounts to about 851 mm (33.5 inches) and receives 168 rainy days on the 1 mm (0.04 inches) threshold annually. Santo Domingo enjoys an average of 3939 hours of sunshine throughout the year, and daylight varies from 11 hours 3 minutes to 13 hours 10 minutes per day.

Monthly average temperatures in Santo Domingo, Puerto Rico

The warmest months in Santo Domingo are July, August and September, with daily mean temperatures ranging from 27 to 27 °C (80 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 24 to 24 °C (76 - 76 °F) throughout the day. On average each year, Santo Domingo experiences 327 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Santo Domingo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(83°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		29°C
(85°F)		30°C
(87°F)		31°C
(88°F)		31°C
(89°F)		31°C
(88°F)		30°C
(87°F)		30°C
(86°F)		30°C
(85°F)
Mean maximum28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		28°C
(82°F)		29°C
(84°F)		29°C
(85°F)		30°C
(87°F)		31°C
(87°F)		30°C
(87°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)
Average high27°C
(80°F)		27°C
(80°F)		26°C
(80°F)		27°C
(80°F)		27°C
(82°F)		28°C
(83°F)		29°C
(84°F)		29°C
(85°F)		29°C
(84°F)		28°C
(83°F)		28°C
(82°F)		28°C
(82°F)
Daily mean24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		25°C
(76°F)		25°C
(78°F)		26°C
(80°F)		27°C
(80°F)		27°C
(81°F)		27°C
(80°F)		26°C
(79°F)		26°C
(78°F)		25°C
(77°F)
Average low22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		23°C
(73°F)		24°C
(75°F)		25°C
(76°F)		25°C
(77°F)		25°C
(78°F)		25°C
(77°F)		25°C
(76°F)		24°C
(75°F)		23°C
(74°F)
Mean minimum21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		23°C
(73°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		23°C
(73°F)		22°C
(71°F)
Minimum18°C
(65°F)		20°C
(69°F)		20°C
(68°F)		20°C
(69°F)		22°C
(72°F)		23°C
(74°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)		22°C
(72°F)		21°C
(71°F)

Compare climate in Santo Domingo with other places

Compare temperature, precipitation, sunshine, UV index in Santo Domingo, Puerto Rico with other places around the world.

Monthly average precipitation in Santo Domingo, Puerto Rico

Santo Domingo usually has the most precipitation in August, September and October, with an average of 20 rainy days and 123 mm (4.8 inches) of precipitation per month. The driest months in Santo Domingo are January, February and December. On average, 24 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santo Domingo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)19 (0.8)26 (1.0)53 (2.1)55 (2.1)67 (2.6)61 (2.4)90 (3.5)94 (3.7)167 (6.6)107 (4.2)87 (3.4)25 (1.0)
Average precipitation days (≥ 1 mm)651215161517172321156

Monthly sunshine hours in Santo Domingo, Puerto Rico

The sunniest months in Santo Domingo are May, July and August, when the sun shines an average of 11 hours 32 minutes a day. Least sunny months in Santo Domingo: January, February and November receive an average of 9 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santo Domingo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours261307347350361348358352316316299319
Mean daily daylight hours11h 10m11h 32m12h 2m12h 33m12h 58m13h 10m13h 4m12h 41m12h 12m11h 42m11h 16m11h 3m

Solar UV radiation in Santo Domingo, Puerto Rico

Santo Domingo experiences the highest level of ultraviolet (UV) radiation in April, May and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Santo Domingo UV Index data.

Average daily maximum UV levels by month for Santo Domingo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131414131313131298