May weather forecastFort Myers, FL

May
Weather in May
In May, Fort Myers makes a remarkable leap into the wet season with rainfall levels jumping to an annual high of 2.24" (57mm). Even with the more frequent showers, the temperature remains agreeable, offering warm days and nights. The sea temperature follows suit, rising favorably, making beach visits enjoyable. It remains a getaway city promising sun-drenched hours, despite the growing humidity levels. The ample sunshine and gusty winds underline May's characteristic weather pattern in Fort Myers.Temperature
With the advent of May, Fort Myers experiences an average high-temperature of a still moderately hot 85.6°F (29.8°C), mirroring a close resemblance to the previous month. During May, Fort Myers sees a mean low-temperature of 72.5°F (22.5°C).Heat index
Throughout May, the heat index is calculated to be a fiery hot 95°F (35°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
In Fort Myers, the average relative humidity in May is 72%.Rainfall
In Fort Myers, in May, it is raining for 14.8 days, with typically 2.24" (57mm) of accumulated precipitation. In Fort Myers, during the entire year, the rain falls for 159.2 days and collects up to 23.54" (598mm) of precipitation.Ocean temperature
In May, the average ocean temperature is 78.8°F (26°C).Note: Water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are warm and delightful, ensuring comfort during water activities over extended periods.
Daylight
The average length of the day in May is 13h and 28min.On the first day of the month, sunrise is at 6:48 am and sunset at 8:00 pm. On the last day of May, sunrise is at 6:34 am and sunset at 8:16 pm EDT.
Sunshine
May and July, with an average of 11h of sunshine, are months with the most sunshine.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: During May, 7 as the daily maximum UV index converts into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Warning! Sand and water reflections boost the intensity of UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Myers, FL
- Average high temperature in May: 85.6°F
The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is January (71.1°F).
- Average low temperature in May: 72.5°F
The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (56.7°F).
Average pressure in May
Fort Myers, FL
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in May
Fort Myers, FL
- Average wind speed in May: 7.2mph
The windiest months (with the highest average wind speed) are October and November (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in May
Fort Myers, FL
- Average humidity in May: 72%
The months with the highest relative humidity are September and December (76%).
The month with the lowest relative humidity is March (71%).
Average rainfall in May
Fort Myers, FL
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and March (0.63").
Average rainfall days in May
Fort Myers, FL
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is August (22.7 days).
The month with the least rainy days is January (6.3 days).
Average sea temperature in May
Fort Myers, FL
- Average sea temperature in May: 79°F
The best month for swimming (with the highest average sea temperature) is August (86°F).
The coldest month (with the lowest average sea temperature) is February (70°F).
Average daylight in May /
Average sunshine in May
Fort Myers, FL
- Average daylight in May: 13h and 30min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in May: 11h and 0min
The months with the most sunshine are May and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in May
Fort Myers, FL
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is August (5.9 days).
Average UV index in May
Fort Myers, FL
- Average UV index in May: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover in May
Fort Myers, FL
- Average cloud cover in May: 24
The months with the most cloud cover are January and December (Cloud cover 29).
The months with the least cloud cover are March, April and May (Cloud cover 24).
Average visibility in May
Fort Myers, FL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





