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Monthly climate in Carolina, Puerto Rico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Carolina features a tropical monsoon climate (Am). Temperatures typically range between 25 °C (77 °F) and 28 °C (82 °F) through the year, but rarely can drop to 21 °C (69 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 996 mm (39.2 inches) and receives 189 rainy days on the 1 mm (0.04 inches) threshold annually. Carolina enjoys an average of 3898 hours of sunshine throughout the year, and daylight varies from 11 hours 2 minutes to 13 hours 12 minutes per day.

Monthly average temperatures in Carolina, Puerto Rico

The warmest months in Carolina are July, August and September, with daily mean temperatures ranging from 28 to 28 °C (82 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 25 to 25 °C (77 - 77 °F) throughout the day. On average each year, Carolina experiences 328 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 Carolina. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum29°C
(85°F)		29°C
(85°F)		30°C
(86°F)		31°C
(88°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(89°F)		31°C
(87°F)		31°C
(87°F)
Mean maximum29°C
(84°F)		29°C
(84°F)		29°C
(85°F)		30°C
(86°F)		31°C
(88°F)		31°C
(87°F)		31°C
(88°F)		32°C
(89°F)		32°C
(89°F)		31°C
(88°F)		30°C
(86°F)		29°C
(85°F)
Average high27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		28°C
(83°F)		29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(87°F)		30°C
(85°F)		29°C
(84°F)		28°C
(82°F)
Daily mean25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		26°C
(78°F)		27°C
(80°F)		27°C
(81°F)		28°C
(82°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		26°C
(80°F)		26°C
(78°F)
Average low23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		24°C
(76°F)		25°C
(78°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		25°C
(76°F)		24°C
(75°F)
Mean minimum22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		22°C
(72°F)		23°C
(74°F)		24°C
(76°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		23°C
(74°F)		23°C
(73°F)
Minimum21°C
(69°F)		21°C
(70°F)		21°C
(71°F)		22°C
(71°F)		23°C
(73°F)		24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		23°C
(74°F)		23°C
(73°F)

Compare climate in Carolina with other places

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

Monthly average precipitation in Carolina, Puerto Rico

Carolina usually has the most precipitation in September, October and November, with an average of 20 rainy days and 141 mm (5.6 inches) of precipitation per month. The driest months in Carolina are January, February and December. On average, 44 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Carolina. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)38 (1.5)43 (1.7)67 (2.6)56 (2.2)64 (2.5)68 (2.7)87 (3.4)99 (3.9)173 (6.8)145 (5.7)106 (4.2)51 (2.0)
Average precipitation days (≥ 1 mm)121214101315181823221616

Monthly sunshine hours in Carolina, Puerto Rico

The sunniest months in Carolina are May, July and August, when the sun shines an average of 11 hours 22 minutes a day. Least sunny months in Carolina: January, February and November receive an average of 9 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Carolina. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours257302346346355342353349313312299318
Mean daily daylight hours11h 9m11h 32m12h 2m12h 33m12h 59m13h 12m13h 5m12h 42m12h 12m11h 41m11h 15m11h 2m

Solar UV radiation in Carolina, Puerto Rico

Carolina 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 Carolina UV Index data.

Average daily maximum UV levels by month for Carolina. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131314131213131298