May weather forecast
Sanibel, FL

May in Sanibel showcases a noticeable rise in temperature, reflecting the city's move deeper into its warm season. May features noticeable heat accompanied by an increase in rainfall, emphasizing the month's role as a transition period. The highest daily average temperature is approximately 82.9°F (28.3°C), signifying the city's entry into its hot season. Coupled with the heat, May experiences a significant surge in rainfall, heralding the city's wet season. Irrespective of these shifts, Sanibel's May weather sees the city retain its charm with clear skies, promising sea temperatures, and abundant daylight hours.

Temperature

May in Sanibel, Florida, welcomes an average high-temperature of a still moderately hot 82.9°F (28.3°C), not much different from the preceding month. Sanibel, during May nights, observes a steady temperature, averaging at a still moderately hot 74.3°F (23.5°C).

Heat index

In May, the heat index is estimated at a tropical 89.6°F (32°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

March, May, July, August and October, with an average relative humidity of 73%, are the least humid months in Sanibel.

Rainfall

In Sanibel, during May, the rain falls for 16.6 days and regularly aggregates up to 3.43" (87mm) of precipitation. In Sanibel, Florida, during the entire year, the rain falls for 190.9 days and collects up to 41.73" (1060mm) of precipitation.

Ocean temperature

In Sanibel, in May, the average water temperature is 79.3°F (26.3°C).
Note: Between 77°F (25°C) and 84.2°F (29°C), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.

Daylight

In Sanibel, the average length of the day in May is 13h and 27min.
On the first day of May in Sanibel, Florida, sunrise is at 6:49 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 8:16 pm EDT.

Sunshine

With an average of 11h of sunshine, May has the most sunshine of the year.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 7 in May translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Heads up! UV intensity is amplified by reflections from water and sand.