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Monthly climate in Portmore, Saint Catherine, Jamaica

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Portmore features a tropical savanna climate (Aw).Temperatures typically range between 25 °C (77 °F) and 28 °C (82 °F) through the year, but rarely can drop to 20 °C (68 °F) or can rise to as high as 34 °C (93 °F).The average annual precipitation amounts to about 890 mm (35.0 inches) and receives 144 rainy days on the 1 mm (0.04 inches) threshold annually.Portmore enjoys an average of 3823 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 Portmore, Saint Catherine, Jamaica §

The warmest months in Portmore are July, August and September, with daily mean temperatures ranging from 27 to 28 °C (81 - 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, Portmore 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 Portmore, Saint Catherine, Jamaica.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 30°C
(86°F)		 29°C
(85°F)		 30°C
(86°F)		 31°C
(88°F)		 32°C
(89°F)		 33°C
(91°F)		 34°C
(93°F)		 33°C
(91°F)		 33°C
(91°F)		 31°C
(89°F)		 30°C
(87°F)		 30°C
(86°F)
Mean maximum 29°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(87°F)		 31°C
(88°F)		 33°C
(91°F)		 33°C
(91°F)		 32°C
(90°F)		 30°C
(87°F)		 30°C
(86°F)		 29°C
(85°F)
Average high 28°C
(82°F)		 27°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 30°C
(86°F)		 31°C
(88°F)		 31°C
(88°F)		 30°C
(87°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(83°F)
Daily mean 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(81°F)		 26°C
(79°F)		 26°C
(79°F)		 25°C
(78°F)
Average low 22°C
(72°F)		 22°C
(72°F)		 22°C
(73°F)		 23°C
(74°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)
Mean minimum 20°C
(69°F)		 21°C
(70°F)		 21°C
(70°F)		 22°C
(72°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)		 22°C
(72°F)		 22°C
(72°F)
Minimum 20°C
(68°F)		 20°C
(68°F)		 20°C
(68°F)		 21°C
(70°F)		 22°C
(72°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(73°F)		 22°C
(72°F)		 21°C
(71°F)

Compare climate in Portmore with other places

Compare temperature, precipitation, sunshine, UV index in Portmore, Saint Catherine, Jamaica with other places around the world.

Monthly average precipitation in Portmore, Saint Catherine, Jamaica §

Portmore usually has the most precipitation in May, September and October, with an average of 19 rainy days and 140 mm (5.5 inches) of precipitation per month.The driest months in Portmore are January, February and December. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Portmore, Saint Catherine, Jamaica.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) 25 (1.0) 24 (0.9) 37 (1.4) 71 (2.8) 112 (4.4) 49 (1.9) 37 (1.5) 90 (3.6) 122 (4.8) 185 (7.3) 110 (4.3) 28 (1.1)
Average precipitation days (≥ 1 mm) 5 7 8 11 14 10 9 14 19 24 16 7

Monthly sunshine hours in Portmore, Saint Catherine, Jamaica §

The sunniest months in Portmore are March, April and July, when the sun shines an average of 11 hours 18 minutes a day.Least sunny months in Portmore: January, February and November receive an average of 9 hours 20 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Portmore, Saint Catherine, Jamaica.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 248 301 345 343 329 337 351 340 319 303 290 312
Mean daily daylight hours 11h 10m 11h 33m 12h 2m 12h 32m 12h 58m 13h 10m 13h 3m 12h 41m 12h 12m 11h 42m 11h 16m 11h 3m

Solar UV radiation in Portmore, Saint Catherine, Jamaica §

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

Average daily maximum UV levels by month for Portmore, Saint Catherine, Jamaica.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 14 13 13 13 13 12 12 9 8