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Monthly climate in West Bay, Cayman Islands

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification West Bay features a tropical savanna climate (Aw).Temperatures typically range between 26 °C (78 °F) and 29 °C (84 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 30 °C (86 °F).The average annual precipitation amounts to about 1062 mm (41.8 inches) and receives 160 rainy days on the 1 mm (0.04 inches) threshold annually.West Bay enjoys an average of 3777 hours of sunshine throughout the year, and daylight varies from 10 hours 58 minutes to 13 hours 16 minutes per day.

Monthly average temperatures in West Bay, Cayman Islands §

The warmest months in West Bay are July, August and September, with daily mean temperatures ranging from 28 to 29 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °C (78 - 79 °F) throughout the day. On average each year, West Bay experiences 326 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 West Bay, Cayman Islands.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
(82°F)		 27°C
(81°F)		 27°C
(82°F)		 28°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(84°F)		 28°C
(83°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)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(82°F)
Average high 26°C
(79°F)		 26°C
(80°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(85°F)		 28°C
(84°F)		 28°C
(82°F)		 27°C
(81°F)
Daily mean 26°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 26°C
(80°F)
Average low 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 27°C
(82°F)		 28°C
(82°F)		 27°C
(82°F)		 27°C
(80°F)		 26°C
(80°F)		 26°C
(78°F)
Mean minimum 23°C
(73°F)		 23°C
(73°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(77°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(78°F)		 25°C
(77°F)		 24°C
(75°F)
Minimum 21°C
(70°F)		 21°C
(70°F)		 23°C
(73°F)		 24°C
(75°F)		 25°C
(76°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 26°C
(78°F)		 25°C
(78°F)		 24°C
(76°F)		 23°C
(73°F)

Compare climate in West Bay with other places

Compare temperature, precipitation, sunshine, UV index in West Bay, Cayman Islands with other places around the world.

Monthly average precipitation in West Bay, Cayman Islands §

West Bay usually has the most precipitation in May, October and November, with an average of 18 rainy days and 186 mm (7.3 inches) of precipitation per month.The driest months in West Bay are February, March and April. On average, 23 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in West Bay, Cayman Islands.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) 39 (1.5) 24 (1.0) 19 (0.8) 25 (1.0) 130 (5.1) 87 (3.4) 55 (2.2) 105 (4.1) 102 (4.0) 254 (10.0) 174 (6.9) 46 (1.8)
Average precipitation days (≥ 1 mm) 11 8 6 7 15 12 14 16 18 23 18 12

Monthly sunshine hours in West Bay, Cayman Islands §

The sunniest months in West Bay are April, May and July, when the sun shines an average of 11 hours 12 minutes a day.Least sunny months in West Bay: January, October and November receive an average of 9 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in West Bay, Cayman Islands.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 246 298 336 341 342 321 347 334 321 293 289 302
Mean daily daylight hours 11h 5m 11h 30m 12h 2m 12h 35m 13h 2m 13h 16m 13h 8m 12h 44m 12h 12m 11h 40m 11h 12m 10h 58m

Solar UV radiation in West Bay, Cayman Islands §

West Bay experiences the highest level of ultraviolet (UV) radiation in April, May and June, when the maximum UV index can reach values of 13 - 13, 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 West Bay UV Index data.

Average daily maximum UV levels by month for West Bay, Cayman Islands.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 10 12 13 13 13 12 12 12 11 9 8