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Monthly climate in Cabo Rojo, Puerto Rico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Cabo Rojo features a tropical monsoon climate (Am). Temperatures typically range between 25 °C (78 °F) and 28 °C (83 °F) through the year, but rarely can drop to 23 °C (73 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 581 mm (22.9 inches) and receives 115 rainy days on the 1 mm (0.04 inches) threshold annually. Cabo Rojo enjoys an average of 3952 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 Cabo Rojo, Puerto Rico

The warmest months in Cabo Rojo are July, August and September, with daily mean temperatures ranging from 28 to 28 °C (82 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 25 to 26 °C (78 - 78 °F) throughout the day. On average each year, Cabo Rojo 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 Cabo Rojo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(83°F)		28°C
(82°F)		28°C
(82°F)		28°C
(83°F)		29°C
(84°F)		30°C
(86°F)		30°C
(87°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)
Mean maximum28°C
(82°F)		27°C
(81°F)		27°C
(81°F)		27°C
(82°F)		28°C
(83°F)		29°C
(85°F)		30°C
(85°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)		28°C
(83°F)
Average high26°C
(80°F)		26°C
(80°F)		26°C
(79°F)		27°C
(80°F)		27°C
(82°F)		28°C
(83°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		28°C
(82°F)		27°C
(82°F)
Daily mean26°C
(78°F)		25°C
(78°F)		25°C
(78°F)		26°C
(79°F)		27°C
(80°F)		27°C
(82°F)		28°C
(82°F)		28°C
(83°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		26°C
(80°F)
Average low25°C
(77°F)		24°C
(76°F)		24°C
(76°F)		25°C
(77°F)		26°C
(79°F)		27°C
(80°F)		27°C
(80°F)		27°C
(81°F)		27°C
(81°F)		27°C
(80°F)		26°C
(79°F)		26°C
(78°F)
Mean minimum24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		25°C
(77°F)		26°C
(78°F)		26°C
(79°F)		26°C
(78°F)		26°C
(79°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)
Minimum23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		24°C
(76°F)		25°C
(77°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(75°F)

Compare climate in Cabo Rojo with other places

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

Monthly average precipitation in Cabo Rojo, Puerto Rico

Cabo Rojo usually has the most precipitation in September, October and November, with an average of 15 rainy days and 90 mm (3.6 inches) of precipitation per month. The driest months in Cabo Rojo are January, February and December. On average, 18 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cabo Rojo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)15 (0.6)17 (0.7)30 (1.2)30 (1.2)33 (1.3)31 (1.2)63 (2.5)70 (2.8)122 (4.8)74 (2.9)75 (3.0)21 (0.8)
Average precipitation days (≥ 1 mm)36787912131816133

Monthly sunshine hours in Cabo Rojo, Puerto Rico

The sunniest months in Cabo Rojo are May, July and August, when the sun shines an average of 11 hours 34 minutes a day. Least sunny months in Cabo Rojo: January, February and November receive an average of 9 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cabo Rojo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours262307347352362351361352317317299320
Mean daily daylight hours11h 10m11h 32m12h 2m12h 33m12h 58m13h 10m13h 4m12h 41m12h 12m11h 42m11h 16m11h 3m

Solar UV radiation in Cabo Rojo, Puerto Rico

Cabo Rojo 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 Cabo Rojo UV Index data.

Average daily maximum UV levels by month for Cabo Rojo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131314131313131298