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Monthly climate in Gros Islet, Saint Lucia

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Gros Islet features a tropical rainforest climate (Af).Temperatures typically range between 25 °C (78 °F) and 28 °C (83 °F) through the year, but rarely can drop to 21 °C (71 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 863 mm (34.0 inches) and receives 211 rainy days on the 1 mm (0.04 inches) threshold annually.Gros Islet enjoys an average of 3909 hours of sunshine throughout the year, and daylight varies from 11 hours 18 minutes to 12 hours 55 minutes per day.

Monthly average temperatures in Gros Islet, Saint Lucia §

The warmest months in Gros Islet are July, August and September, with daily mean temperatures ranging from 27 to 28 °C (81 - 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 - 79 °F) throughout the day. On average each year, Gros Islet 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 Gros Islet, Saint Lucia.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)		 30°C
(86°F)		 30°C
(85°F)		 31°C
(87°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(89°F)		 31°C
(89°F)		 32°C
(90°F)		 32°C
(89°F)		 31°C
(87°F)		 30°C
(86°F)
Mean maximum 29°C
(84°F)		 29°C
(85°F)		 29°C
(85°F)		 30°C
(86°F)		 31°C
(87°F)		 30°C
(87°F)		 31°C
(88°F)		 31°C
(88°F)		 32°C
(90°F)		 31°C
(88°F)		 30°C
(86°F)		 29°C
(85°F)
Average high 28°C
(82°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(85°F)		 30°C
(85°F)		 30°C
(86°F)		 30°C
(87°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(84°F)
Daily mean 26°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 27°C
(81°F)		 27°C
(81°F)		 26°C
(80°F)
Average low 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 25°C
(76°F)		 25°C
(78°F)		 26°C
(78°F)		 26°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)
Mean minimum 23°C
(73°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(76°F)		 23°C
(74°F)
Minimum 22°C
(72°F)		 21°C
(71°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 22°C
(72°F)

Compare climate in Gros Islet with other places

Compare temperature, precipitation, sunshine, UV index in Gros Islet, Saint Lucia with other places around the world.

Monthly average precipitation in Gros Islet, Saint Lucia §

Gros Islet usually has the most precipitation in August, September and October, with an average of 21 rainy days and 121 mm (4.8 inches) of precipitation per month.The driest months in Gros Islet are January, February and April. On average, 34 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Gros Islet, Saint Lucia.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) 36 (1.4) 33 (1.3) 38 (1.5) 35 (1.4) 39 (1.6) 65 (2.6) 105 (4.1) 113 (4.5) 121 (4.8) 128 (5.1) 103 (4.1) 46 (1.8)
Average precipitation days (≥ 1 mm) 15 12 15 14 13 16 24 25 19 21 21 16

Monthly sunshine hours in Gros Islet, Saint Lucia §

The sunniest months in Gros Islet are May, July and August, when the sun shines an average of 11 hours 16 minutes a day.Least sunny months in Gros Islet: January, February and November receive an average of 9 hours 50 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Gros Islet, Saint Lucia.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 268 304 344 336 354 324 347 345 319 319 313 329
Mean daily daylight hours 11h 23m 11h 40m 12h 3m 12h 26m 12h 45m 12h 55m 12h 50m 12h 33m 12h 10m 11h 47m 11h 28m 11h 18m

Solar UV radiation in Gros Islet, Saint Lucia §

Gros Islet experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 14 - 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 10. For more detailed information, check out our hourly Gros Islet UV Index data.

Average daily maximum UV levels by month for Gros Islet, Saint Lucia.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) 10 12 14 14 14 13 13 14 14 12 10 9