Sanibel
Florida, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Sanibel, FL

A large flock of the iconic royal tern birds on the white sandy shores on a typical beach in Sanibel, Florida, with a great clear blue summer sky
A large flock of the iconic royal tern birds on the white sandy shores on a typical beach in Sanibel, Florida, with a great clear blue summer sky
January, the same as December, is a moderately hot winter month in Sanibel, Florida, with average temperature ranging between max 73.4°F (23°C) and min 53.6°F (12°C). January is the coldest month, with an average high-temperature of 73.4°F (23°C) and an average low-temperature of 53.6°F (12°C). Weather in January »
February, the last month of the winter, in Sanibel, is another warm month, with average temperature ranging between min 53.6°F (12°C) and max 75.2°F (24°C). In Sanibel, Florida, the average high-temperature in February is practically the same as in January - a still moderately hot 75.2°F (24°C). Weather in February »

The first month of the spring, March, is also a moderately hot month in Sanibel, Florida, with average temperature ranging between min 59°F (15°C) and max 78.8°F (26°C). In March, the average high-temperature is essentially the same as in February - a still moderately hot 78.8°F (26°C). Weather in March »

April, like March, in Sanibel, Florida, is another warm spring month, with average temperature fluctuating between 84.2°F (29°C) and 62.6°F (17°C). In Sanibel, the average high-temperature slightly increases, from 78.8°F (26°C) in March, to a still moderately hot 84.2°F (29°C). Weather in April »

May, the last month of the spring, in Sanibel, is a hot month, with temperature in the range of an average high of 87.8°F (31°C) and an average low of 68°F (20°C). In Sanibel, Florida, the average high-temperature is almost the same as in April - a hot 87.8°F (31°C). Weather in May »

The first month of the summer, June, is also a hot month in Sanibel, Florida, with temperature in the range of an average low of 73.4°F (23°C) and an average high of 89.6°F (32°C). In Sanibel, Florida, the average high-temperature in June is practically the same as in May - a still hot 89.6°F (32°C). Weather in June »

July, like June, is another tropical summer month in Sanibel, Florida, with average temperature varying between 75.2°F (24°C) and 91.4°F (33°C). July and August, with an average high-temperature of 91.4°F (33°C), are the warmest months. Weather in July »

The last month of the summer, August, is another hot month in Sanibel, Florida, with average temperature varying between 91.4°F (33°C) and 75.2°F (24°C). The warmest months are July and August, with an average high-temperature of 91.4°F (33°C). Weather in August »

The first month of the autumn, September, is still a hot month in Sanibel, Florida, with average temperature ranging between min 73.4°F (23°C) and max 89.6°F (32°C). In September, the average high-temperature is essentially the same as in August - a still tropical 89.6°F (32°C). Weather in September »

October, the same as September, in Sanibel, Florida, is another tropical autumn month, with average temperature fluctuating between 68°F (20°C) and 86°F (30°C). In Sanibel, Florida, the average high-temperature in October is relatively the same as in September - a still hot 86°F (30°C). Weather in October »

November, the last month of the autumn, in Sanibel, is another warm month, with average temperature fluctuating between 60.8°F (16°C) and 80.6°F (27°C). In Sanibel, the average high-temperature in November marginally drops, from a tropical 86°F (30°C) in October, to a warm 80.6°F (27°C). Weather in November »

The first month of the winter, December, is still a warm month in Sanibel, Florida, with average temperature ranging between min 55.4°F (13°C) and max 75.2°F (24°C). In Sanibel, the average high-temperature marginally drops, from a moderately hot 80.6°F (27°C) in November, to a still warm 75.2°F (24°C). Weather in December »

What is the coldest month in Sanibel?

The coldest month in Sanibel is January, with an average high-temperature of 73.4°F (23°C) and an average low-temperature of 53.6°F (12°C).

How much does it rain in Sanibel?

In Sanibel, during the entire year, the rain falls for 108 days and collects up to 52.6" (1335mm) of precipitation.

What month is the ocean coldest in Sanibel?

With an average ocean temperature of 65.3°F (18.5°C), January is the month with the coldest seawater in Sanibel, Florida. Swimming in 65.3°F (18.5°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the month with the least sunshine in Sanibel?

January, November and December, with an average of 7h of sunshine, are months with the least sunshine in Sanibel, Florida.

What is the month with the lowest UV index in Sanibel?

January and December, with an average maximum UV index of 5, are months with the lowest UV index.

What is the driest month in Sanibel?

The month with the least rainfall in Sanibel, Florida, is April when the rain falls for 4 days and typically collects 1.4" (36mm) of precipitation.

What is the month with the most sunshine in Sanibel?

Months with the most sunshine are April through June, with an average of 10h of sunshine.

What are the months with the highest UV index in Sanibel?

April through August, with an average maximum UV index of 11, are months with the highest UV index in Sanibel, Florida.

What is the wettest month in Sanibel?

June is the month with the most rainfall. Rain falls for 13 days and accumulates 8.9" (225mm) of precipitation.

When are the longest days in Sanibel?

June has the longest days of the year in Sanibel, Florida, with an average of 13.8h of daylight.

What are the warmest months in Sanibel?

July and August, with an average high-temperature of 91.4°F (33°C), are warmest months in Sanibel, Florida.

What is the month with the warmest ocean in Sanibel?

August is the month with the warmest seawater in Sanibel, Florida, with an average ocean temperature of 87.1°F (30.6°C). The water temperature above 86°F (30°C) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

What is the month with the shortest days in Sanibel?

December has the shortest days of the year in Sanibel, Florida, with an average of 10.5h of daylight.
Average rainfall - Sanibel, FL
Average rainfall days - Sanibel, FL
Average sea temperature - Sanibel, FL

The best month for swimming (with the highest average sea temperature) is August (87.1°F).
The coldest month (with the lowest average sea temperature) is January (65.3°F).

Average daylight / Average sunshine - Sanibel, FL

The month with the longest days is June (Average daylight: 13.8h).
The month with shortest days is December (Average daylight: 10.5h).

Months with most sunshine are April, May and June (Average sunshine: 10h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index - Sanibel, FL