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

May 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
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).

Temperature

In Sanibel, Florida, the average high-temperature is almost the same as in April - a hot 87.8°F (31°C). In Sanibel, the average low-temperature is 68°F (20°C).

Rainfall

In Sanibel, during 8 rainfall days, 3.7" (93mm) of precipitation is typically accumulated. Throughout the year, in Sanibel, there are 108 rainfall days, and 52.6" (1335mm) of precipitation is accumulated.

Ocean temperature

In Sanibel, the average seawater temperature is 79.3°F (26.3°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Sanibel, Florida, the average length of the day is 13.5h.

Sunshine

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

UV index

Months with the highest UV index are April through August, with an average maximum UV index of 11. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
The average daily UV index of 11 in May transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in May in Sanibel?

In May, the average high-temperature is 87.8°F (31°C), and the average low-temperature is 68°F (20°C).

How many days does it rain in May in Sanibel?

In Sanibel, in May, it is raining for 8 days, with typically 3.7" (93mm) of accumulated precipitation.

What is the ocean temperature in May in Sanibel?

In Sanibel, Florida, in May, the average water temperature is 79.3°F (26.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in May in Sanibel?

In Sanibel, the average length of the day in May is 13.5h.

What is the month with the most sunshine in Sanibel?

April through June, with an average of 10h of sunshine, are months with the most sunshine in Sanibel, Florida.

How many hours of sunshine does Sanibel have in May?

In May, the average sunshine in Sanibel is 10h.

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

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

How high is the UV index in May in Sanibel?

The average daily maximum UV index in May in Sanibel, Florida, is 11. A UV Index of 11, and more, symbolizes an excessive health risk from the exposure to the Sun's UV radiation.
Average temperature in May - Sanibel, FL
  • Average high temperature in May: 88°F

Warmest months (with the highest average high temperature) are July and August (91°F).
The month with the lowest average high temperature is January (73°F).

  • Average low temperature in May: 68°F

Months with the highest average low temperature are July and August (75°F).
Coldest months (with the lowest average low temperature) are January and February (54°F).

Average rainfall in May - Sanibel, FL
  • Average rainfall in May: 3.7"

The wettest month (with the highest rainfall) is June (8.9").
The driest month (with the lowest rainfall) is April (1.4").

Average rainfall days in May - Sanibel, FL
  • Average rainfall days in May: 8 days

The month with the highest number of rainy days is August (16 days).
The month with the lowest number of rainy days is April (4 days).

Average sea temperature in May - Sanibel, FL
  • Average sea temperature in May: 79.4°F

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 in May / Average sunshine in May - Sanibel, FL
  • Average daylight in May: 13.5h

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

  • Average sunshine in May: 10h

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 in May - Sanibel, FL
  • Average UV index in May: 11

Months with the highest UV index are April, May, June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 5).