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Monthly climate in Key Largo, Florida, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Key Largo features a tropical savanna climate (Aw).Temperatures typically range between 22 °C (71 °F) and 28 °C (83 °F) through the year, but rarely can drop to 10 °C (50 °F) or can rise to as high as 31 °C (87 °F).The average annual precipitation amounts to about 1065 mm (41.9 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually.Key Largo enjoys an average of 3707 hours of sunshine throughout the year, and daylight varies from 10 hours 35 minutes to 13 hours 39 minutes per day.

Monthly average temperatures in Key Largo, Florida, United States §

The warmest months in Key Largo are July, August and September, with daily mean temperatures ranging from 28 to 28 °C (83 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 22 to 23 °C (71 - 74 °F) throughout the day. On average each year, Key Largo experiences 227 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 Key Largo, Florida, United States.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 26°C
(80°F)		 26°C
(80°F)		 26°C
(80°F)		 28°C
(83°F)		 29°C
(84°F)		 30°C
(87°F)		 31°C
(87°F)		 30°C
(87°F)		 30°C
(87°F)		 29°C
(85°F)		 28°C
(83°F)		 27°C
(80°F)
Mean maximum 25°C
(78°F)		 26°C
(78°F)		 26°C
(79°F)		 27°C
(81°F)		 28°C
(83°F)		 29°C
(84°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(86°F)		 29°C
(84°F)		 27°C
(82°F)		 26°C
(79°F)
Average high 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 26°C
(78°F)		 27°C
(80°F)		 28°C
(83°F)		 29°C
(84°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(82°F)		 26°C
(79°F)		 24°C
(76°F)
Daily mean 22°C
(71°F)		 23°C
(74°F)		 23°C
(74°F)		 25°C
(77°F)		 26°C
(79°F)		 27°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(83°F)		 27°C
(81°F)		 25°C
(77°F)		 23°C
(74°F)
Average low 20°C
(69°F)		 22°C
(72°F)		 22°C
(72°F)		 24°C
(75°F)		 25°C
(78°F)		 27°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 27°C
(81°F)		 26°C
(79°F)		 24°C
(75°F)		 22°C
(72°F)
Mean minimum 12°C
(54°F)		 16°C
(62°F)		 17°C
(63°F)		 20°C
(68°F)		 23°C
(73°F)		 25°C
(77°F)		 26°C
(79°F)		 26°C
(79°F)		 25°C
(78°F)		 23°C
(73°F)		 19°C
(66°F)		 15°C
(60°F)
Minimum 10°C
(50°F)		 14°C
(57°F)		 15°C
(59°F)		 17°C
(64°F)		 21°C
(70°F)		 24°C
(75°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)		 18°C
(65°F)		 15°C
(60°F)		 14°C
(57°F)

Compare climate in Key Largo with other places

Compare temperature, precipitation, sunshine, UV index in Key Largo, Florida, United States with other places around the world.

Monthly average precipitation in Key Largo, Florida, United States §

Key Largo usually has the most precipitation in May, September and October, with an average of 16 rainy days and 159 mm (6.2 inches) of precipitation per month.The driest months in Key Largo are January, February and March. On average, 31 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Key Largo, Florida, United States.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) 31 (1.2) 35 (1.4) 27 (1.0) 47 (1.8) 155 (6.1) 112 (4.4) 103 (4.1) 108 (4.3) 179 (7.1) 142 (5.6) 82 (3.2) 44 (1.7)
Average precipitation days (≥ 1 mm) 6 7 4 9 13 18 17 18 18 18 11 8

Monthly sunshine hours in Key Largo, Florida, United States §

The sunniest months in Key Largo are April, July and August, when the sun shines an average of 11 hours 10 minutes a day.Least sunny months in Key Largo: January, February and November receive an average of 8 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Key Largo, Florida, United States.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 227 282 328 338 328 319 347 341 316 305 280 289
Mean daily daylight hours 10h 45m 11h 18m 12h 1m 12h 45m 13h 21m 13h 39m 13h 29m 12h 57m 12h 15m 11h 31m 10h 54m 10h 35m

Solar UV radiation in Key Largo, Florida, United States §

Key Largo experiences the highest level of ultraviolet (UV) radiation in April, June and September, when the maximum UV index can reach values of 12 - 13, which corresponds to the Extreme category of sun exposure.January, November and December are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Key Largo UV Index data.

Average daily maximum UV levels by month for Key Largo, Florida, United States.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) 6 9 11 12 12 13 12 12 12 10 8 6