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Monthly climate in Castanuelas, Dominican Republic

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Castanuelas features a tropical savanna climate (As). Temperatures typically range between 26 °C (78 °F) and 30 °C (86 °F) through the year, but rarely can drop to 16 °C (61 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 399 mm (15.7 inches) and receives 79 rainy days on the 1 mm (0.04 inches) threshold annually. Castanuelas enjoys an average of 3813 hours of sunshine throughout the year, and daylight varies from 10 hours 57 minutes to 13 hours 17 minutes per day.

Monthly average temperatures in Castanuelas, Dominican Republic

The warmest months in Castanuelas are June, July and August, with daily mean temperatures ranging from 29 to 30 °C (85 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °C (78 - 79 °F) throughout the day. On average each year, Castanuelas experiences 329 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 Castanuelas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(92°F)		34°C
(94°F)		35°C
(94°F)		36°C
(97°F)		37°C
(99°F)		38°C
(101°F)		38°C
(100°F)		38°C
(101°F)		38°C
(100°F)		37°C
(100°F)		36°C
(96°F)		34°C
(94°F)
Mean maximum32°C
(91°F)		33°C
(92°F)		34°C
(93°F)		35°C
(95°F)		36°C
(98°F)		36°C
(98°F)		37°C
(99°F)		37°C
(100°F)		36°C
(98°F)		35°C
(96°F)		34°C
(94°F)		33°C
(92°F)
Average high30°C
(87°F)		31°C
(88°F)		31°C
(88°F)		32°C
(90°F)		34°C
(93°F)		34°C
(94°F)		35°C
(95°F)		35°C
(96°F)		34°C
(94°F)		33°C
(92°F)		32°C
(90°F)		31°C
(88°F)
Daily mean26°C
(78°F)		26°C
(79°F)		26°C
(79°F)		27°C
(82°F)		29°C
(84°F)		29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		28°C
(84°F)		27°C
(81°F)		26°C
(80°F)
Average low21°C
(71°F)		22°C
(72°F)		22°C
(72°F)		24°C
(75°F)		25°C
(77°F)		26°C
(79°F)		26°C
(79°F)		26°C
(80°F)		26°C
(79°F)		25°C
(77°F)		24°C
(75°F)		22°C
(73°F)
Mean minimum19°C
(66°F)		20°C
(69°F)		20°C
(69°F)		21°C
(71°F)		23°C
(74°F)		24°C
(76°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		23°C
(75°F)		21°C
(71°F)		20°C
(69°F)
Minimum16°C
(61°F)		19°C
(66°F)		19°C
(66°F)		21°C
(69°F)		22°C
(72°F)		23°C
(74°F)		24°C
(76°F)		25°C
(77°F)		24°C
(76°F)		23°C
(74°F)		20°C
(67°F)		20°C
(68°F)

Compare climate in Castanuelas with other places

Compare temperature, precipitation, sunshine, UV index in Castanuelas, Dominican Republic with other places around the world.

Monthly average precipitation in Castanuelas, Dominican Republic

Castanuelas usually has the most precipitation in September, October and November, with an average of 11 rainy days and 60 mm (2.4 inches) of precipitation per month. The driest months in Castanuelas are February, June and July. On average, 16 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Castanuelas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)21 (0.8)10 (0.4)40 (1.6)28 (1.1)34 (1.3)19 (0.8)19 (0.7)26 (1.0)78 (3.1)51 (2.0)53 (2.1)21 (0.8)
Average precipitation days (≥ 1 mm)328585551310105

Monthly sunshine hours in Castanuelas, Dominican Republic

The sunniest months in Castanuelas are June, July and August, when the sun shines an average of 11 hours 19 minutes a day. Least sunny months in Castanuelas: January, February and November receive an average of 9 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Castanuelas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours246300331335337345354341308311288311
Mean daily daylight hours11h 4m11h 29m12h 2m12h 35m13h 3m13h 17m13h 10m12h 45m12h 13m11h 39m11h 11m10h 57m

Solar UV radiation in Castanuelas, Dominican Republic

Castanuelas experiences the highest level of ultraviolet (UV) radiation in April, May and August, when the maximum UV index can reach values of 13 - 13, 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 Castanuelas UV Index data.

Average daily maximum UV levels by month for Castanuelas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)811131313121213121198