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Monthly climate in Bartolo, Río Grande, Puerto Rico

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bartolo features a tropical monsoon climate (Am).Temperatures typically range between 24 °C (76 °F) and 27 °C (82 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 31 °C (88 °F).The average annual precipitation amounts to about 1391 mm (54.7 inches) and receives 289 rainy days on the 1 mm (0.04 inches) threshold annually.Bartolo enjoys an average of 3915 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 Bartolo, Río Grande, Puerto Rico §

The warmest months in Bartolo are July, August and September, with daily mean temperatures ranging from 27 to 27 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 24 to 25 °C (76 - 77 °F) throughout the day. On average each year, Bartolo experiences 324 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 Bartolo, Río Grande, Puerto Rico.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 28°C
(83°F)		 27°C
(81°F)		 28°C
(82°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(87°F)		 30°C
(86°F)		 30°C
(87°F)		 31°C
(88°F)		 30°C
(87°F)		 29°C
(85°F)		 29°C
(85°F)
Mean maximum 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 31°C
(87°F)		 30°C
(86°F)		 29°C
(85°F)		 28°C
(83°F)
Average high 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(83°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(82°F)		 27°C
(81°F)
Daily mean 25°C
(77°F)		 24°C
(76°F)		 25°C
(76°F)		 25°C
(77°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(82°F)		 27°C
(82°F)		 27°C
(81°F)		 26°C
(80°F)		 26°C
(78°F)
Average low 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(77°F)		 24°C
(76°F)
Mean minimum 22°C
(72°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(73°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)
Minimum 21°C
(70°F)		 21°C
(70°F)		 22°C
(72°F)		 22°C
(71°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
(74°F)		 23°C
(73°F)

Compare climate in Bartolo with other places

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

Monthly average precipitation in Bartolo, Río Grande, Puerto Rico §

Bartolo usually has the most precipitation in August, September and October, with an average of 27 rainy days and 178 mm (7.0 inches) of precipitation per month.The driest months in Bartolo are January, February and March. On average, 65 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bartolo, Río Grande, Puerto Rico.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 57 (2.3) 61 (2.4) 78 (3.1) 79 (3.1) 109 (4.3) 110 (4.3) 149 (5.9) 153 (6.0) 195 (7.7) 187 (7.4) 131 (5.2) 81 (3.2)
Average precipitation days (≥ 1 mm) 17 21 22 20 26 26 27 27 28 26 25 24

Monthly sunshine hours in Bartolo, Río Grande, Puerto Rico §

The sunniest months in Bartolo are May, July and August, when the sun shines an average of 11 hours 23 minutes a day.Least sunny months in Bartolo: January, February and November receive an average of 9 hours 34 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bartolo, Río Grande, Puerto Rico.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 257 301 348 347 356 344 354 348 318 315 301 319
Mean daily daylight hours 11h 9m 11h 32m 12h 2m 12h 33m 12h 59m 13h 12m 13h 5m 12h 42m 12h 12m 11h 41m 11h 15m 11h 2m

Solar UV radiation in Bartolo, Río Grande, Puerto Rico §

Bartolo experiences the highest level of ultraviolet (UV) radiation in April, August 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 Bartolo UV Index data.

Average daily maximum UV levels by month for Bartolo, Río Grande, Puerto Rico.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 9 11 13 13 13 13 12 13 14 12 9 8