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Monthly climate in Saint Croix, Virgin Islands (U.S.)

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Saint Croix 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 22 °C (72 °F) or can rise to as high as 29 °C (85 °F).The average annual precipitation amounts to about 905 mm (35.6 inches) and receives 182 rainy days on the 1 mm (0.04 inches) threshold annually.Saint Croix enjoys an average of 3934 hours of sunshine throughout the year, and daylight varies from 11 hours 4 minutes to 13 hours 9 minutes per day.

Monthly average temperatures in Saint Croix, Virgin Islands (U.S.) §

The warmest months in Saint Croix are August, September and October, with daily mean temperatures ranging from 27 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 - 78 °F) throughout the day. On average each year, Saint Croix experiences 325 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 Saint Croix, Virgin Islands (U.S.).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 27°C
(81°F)		 27°C
(81°F)		 26°C
(80°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 28°C
(83°F)		 28°C
(83°F)
Mean maximum 27°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 27°C
(80°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(84°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(83°F)		 27°C
(82°F)
Average high 26°C
(79°F)		 26°C
(78°F)		 26°C
(78°F)		 26°C
(79°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 27°C
(82°F)		 27°C
(80°F)
Daily mean 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 26°C
(78°F)		 26°C
(80°F)		 27°C
(81°F)		 27°C
(82°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(82°F)		 27°C
(81°F)		 26°C
(79°F)
Average low 25°C
(77°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(77°F)		 26°C
(78°F)		 26°C
(80°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(80°F)		 26°C
(79°F)		 25°C
(78°F)
Mean minimum 24°C
(75°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(76°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(78°F)		 26°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)		 24°C
(76°F)
Minimum 23°C
(74°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(75°F)

Compare climate in Saint Croix with other places

Compare temperature, precipitation, sunshine, UV index in Saint Croix, Virgin Islands (U.S.) with other places around the world.

Monthly average precipitation in Saint Croix, Virgin Islands (U.S.) §

Saint Croix usually has the most precipitation in August, September and October, with an average of 18 rainy days and 136 mm (5.4 inches) of precipitation per month.The driest months in Saint Croix are January, February and March. On average, 33 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Saint Croix, Virgin Islands (U.S.).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) 34 (1.3) 31 (1.2) 34 (1.3) 41 (1.6) 57 (2.2) 59 (2.3) 92 (3.6) 123 (4.8) 156 (6.2) 130 (5.1) 98 (3.9) 50 (2.0)
Average precipitation days (≥ 1 mm) 13 11 11 10 13 17 19 17 20 18 17 16

Monthly sunshine hours in Saint Croix, Virgin Islands (U.S.) §

The sunniest months in Saint Croix are March, May and July, when the sun shines an average of 11 hours 27 minutes a day.Least sunny months in Saint Croix: January, February and November receive an average of 9 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Saint Croix, Virgin Islands (U.S.).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 260 302 349 347 360 343 356 348 319 317 307 320
Mean daily daylight hours 11h 11m 11h 33m 12h 2m 12h 32m 12h 57m 13h 9m 13h 3m 12h 40m 12h 12m 11h 42m 11h 17m 11h 4m

Solar UV radiation in Saint Croix, Virgin Islands (U.S.) §

Saint Croix 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 10. For more detailed information, check out our hourly Saint Croix UV Index data.

Average daily maximum UV levels by month for Saint Croix, Virgin Islands (U.S.).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 13 13 14 12 10 9