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Monthly climate in Sanibel, Florida, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Sanibel features a tropical savanna climate (Aw). Temperatures typically range between 18 °C (65 °F) and 28 °C (83 °F) through the year, but rarely can drop to 3 °C (38 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 1171 mm (46.1 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually. Sanibel enjoys an average of 3622 hours of sunshine throughout the year, and daylight varies from 10 hours 29 minutes to 13 hours 45 minutes per day.

Monthly average temperatures in Sanibel, Florida, United States §

The warmest months in Sanibel are July, August and September, with daily mean temperatures ranging from 28 to 28 °C (82 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 18 to 21 °C (65 - 69 °F) throughout the day. On average each year, Sanibel experiences 234 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 Sanibel, 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 27°C
(81°F)		 28°C
(83°F)		 28°C
(83°F)		 31°C
(88°F)		 32°C
(90°F)		 33°C
(92°F)		 32°C
(90°F)		 33°C
(91°F)		 33°C
(92°F)		 32°C
(90°F)		 31°C
(89°F)		 27°C
(81°F)
Mean maximum 25°C
(78°F)		 27°C
(81°F)		 28°C
(82°F)		 30°C
(86°F)		 31°C
(89°F)		 32°C
(89°F)		 32°C
(89°F)		 32°C
(90°F)		 32°C
(90°F)		 31°C
(89°F)		 29°C
(84°F)		 26°C
(79°F)
Average high 21°C
(71°F)		 24°C
(75°F)		 25°C
(76°F)		 27°C
(81°F)		 29°C
(84°F)		 30°C
(86°F)		 30°C
(86°F)		 30°C
(87°F)		 30°C
(86°F)		 29°C
(84°F)		 25°C
(78°F)		 23°C
(74°F)
Daily mean 18°C
(65°F)		 21°C
(69°F)		 21°C
(71°F)		 24°C
(76°F)		 26°C
(79°F)		 27°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(82°F)		 26°C
(80°F)		 23°C
(73°F)		 20°C
(68°F)
Average low 15°C
(60°F)		 18°C
(64°F)		 18°C
(65°F)		 21°C
(71°F)		 23°C
(74°F)		 26°C
(78°F)		 26°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 24°C
(76°F)		 20°C
(68°F)		 17°C
(63°F)
Mean minimum 6°C
(44°F)		 10°C
(50°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(69°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)		 20°C
(68°F)		 14°C
(57°F)		 11°C
(51°F)
Minimum 3°C
(38°F)		 7°C
(45°F)		 9°C
(48°F)		 13°C
(56°F)		 18°C
(65°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(76°F)		 23°C
(74°F)		 14°C
(58°F)		 11°C
(52°F)		 8°C
(46°F)

Compare climate in Sanibel with other places

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

Monthly average precipitation in Sanibel, Florida, United States §

Sanibel usually has the most precipitation in June, July and August, with an average of 24 rainy days and 191 mm (7.5 inches) of precipitation per month. The driest months in Sanibel 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 Sanibel, 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) 36 (1.4) 36 (1.4) 22 (0.9) 42 (1.7) 122 (4.8) 170 (6.7) 195 (7.7) 206 (8.1) 169 (6.7) 76 (3.0) 44 (1.7) 52 (2.1)
Average precipitation days (≥ 1 mm) 4 4 2 7 12 22 26 26 20 12 6 6

Monthly sunshine hours in Sanibel, Florida, United States §

The sunniest months in Sanibel are March, May and July, when the sun shines an average of 10 hours 38 minutes a day. Least sunny months in Sanibel: January, February and November receive an average of 8 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sanibel, 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 224 276 327 324 329 302 332 326 312 301 276 287
Mean daily daylight hours 10h 40m 11h 15m 12h 1m 12h 47m 13h 26m 13h 45m 13h 35m 13h 0m 12h 16m 11h 29m 10h 49m 10h 29m

Solar UV radiation in Sanibel, Florida, United States §

Sanibel experiences the highest level of ultraviolet (UV) radiation in April, May and August, when the maximum UV index can reach values of 12 - 12, 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 Sanibel UV Index data.

Average daily maximum UV levels by month for Sanibel, 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 10 12 12 12 12 12 11 10 8 6

Detailed Monthly Weather Insights for Sanibel, Florida, United States

Discover in-depth weather details for every month in Sanibel. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Sanibel's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.