May weather forecastFort Walton Beach, FL

May
Weather in May
The last month of the spring, May, is also a moderately hot month in Fort Walton Beach, Florida, with an average temperature varying between 81.9°F (27.7°C) and 69.8°F (21°C).Temperature
With the onset of May, Fort Walton Beach's weather sees a minor temperature rise, transitioning from a moderately hot 74.3°F (23.5°C) in April to a still warm 81.9°F (27.7°C). Throughout May, the temperature falls to an average low of 69.8°F (21°C).Heat index
The heat index value for May is calculated to be a hot 86°F (30°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.The standards for the heat index are set for locations in shade and under light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
In Fort Walton Beach, the average relative humidity in May is 73%.Rainfall
May is the month with the least rainfall. Rain falls for 11.9 days and accumulates 1.85" (47mm) of precipitation.Snowfall
March through December are months without snowfall.Ocean temperature
In Fort Walton Beach, the average seawater temperature in May is 76.6°F (24.8°C).Note: If you're wary of the cold, the surrounding conditions—sunshine, wind, and air temperature become crucial when swimming in 76.6°F (24.8°C) waters. Olympic standards, for reference, are set between 77°F (25°C) and 82.4°F (28°C).
Daylight
In Fort Walton Beach, the average length of the day in May is 13h and 42min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:24 pm. On the last day of May, sunrise is at 5:44 am and sunset at 7:43 pm CDT.
Sunshine
May and June, with an average of 11.1h of sunshine, are months with the most sunshine in Fort Walton Beach.UV index
May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, a regular UV index of 7 translates into these guidelines:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Walton Beach, FL
- Average high temperature in May: 81.9°F
The warmest month (with the highest average high temperature) is August (89.1°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in May: 69.8°F
The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (47.1°F).
Average pressure in May
Fort Walton Beach, FL
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in May
Fort Walton Beach, FL
- Average wind speed in May: 7.9mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Fort Walton Beach, FL
- Average humidity in May: 73%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Fort Walton Beach, FL
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is August (5.24").
The driest month (with the least rainfall) is May (1.85").
Average rainfall days in May
Fort Walton Beach, FL
- Average rainfall days in May: 11.9 days
The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is November (8 days).
Average snowfall days in May
Fort Walton Beach, FL
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in May
Fort Walton Beach, FL
- Average sea temperature in May: 76.6°F
The best month for swimming (with the highest average sea temperature) is August (86.2°F).
The coldest month (with the lowest average sea temperature) is February (62.3°F).
Average daylight in May /
Average sunshine in May
Fort Walton Beach, FL
- Average daylight in May: 13h and 42min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in May: 11h and 6min
The months with the most sunshine are May and June (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 5h and 30min).
Average sunshine days in May
Fort Walton Beach, FL
- Average sunshine days in May: 16.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is August (4.1 days).
Average UV index in May
Fort Walton Beach, FL
- Average UV index in May: 7
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in May
Fort Walton Beach, FL
- Average cloud cover in May: 23
The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 22).
Average visibility in May
Fort Walton Beach, 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).





