May weather forecastFort Lauderdale, FL

May
Weather in May
May is considered the advent of the true summer season, carrying forward the trend of rising temperatures from the preceding month. The highest rainfall of the year occurs during this month, a consequence of the increase in heat and humidity. However, the consistent wind speed helps to slightly temper the heat. Sea temperatures tend to rise, making this an ideal time to partake in watersports and other ocean-based activities. With 13.4 hours of daylight and 10.7 hours of sunshine, it brings abundant opportunities for outdoor endeavors.Temperature
As May unfolds, the average high-temperature reaches a still warm 82°F (27.8°C), hinting at a slight fluctuation from the previous month. In May, Fort Lauderdale experiences a marginal drop in temperature, with averages of 76.3°F (24.6°C) at night.Heat index
The heat index in May is evaluated at a hot 87.8°F (31°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.The standards for the heat index are set for locations in shade and under light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of 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. 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 highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
The average relative humidity in May is 72%.Rainfall
In May, the rain falls for 14.7 days. Throughout May, 1.65" (42mm) of precipitation is accumulated. In Fort Lauderdale, during the entire year, the rain falls for 179 days and collects up to 15.55" (395mm) of precipitation.Ocean temperature
In Fort Lauderdale, the average seawater temperature in May is 80.8°F (27.1°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.
Daylight
In Fort Lauderdale, the average length of the day in May is 13h and 26min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:52 pm. On the last day of May, in Fort Lauderdale, sunrise is at 6:28 am and sunset at 8:08 pm EDT.
Sunshine
In May, the average sunshine is 10.7h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In May, an average UV index of 7 transforms into the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. 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. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Stay cautious! Sand and water reflections increase UV radiation potency.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Lauderdale, FL
- Average high temperature in May: 82°F
The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is January (73°F).
- Average low temperature in May: 76.3°F
The month with the highest average low temperature is August (82°F).
The coldest month (with the lowest average low temperature) is January (64.2°F).
Average pressure in May
Fort Lauderdale, FL
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are September and October (29.95"Hg).
Average wind speed in May
Fort Lauderdale, FL
- Average wind speed in May: 10.2mph
The windiest month (with the highest average wind speed) is March (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in May
Fort Lauderdale, FL
- Average humidity in May: 72%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).
Average rainfall in May
Fort Lauderdale, FL
- Average rainfall in May: 1.65"
The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in May
Fort Lauderdale, FL
- Average rainfall days in May: 14.7 days
The month with the highest number of rainy days is September (23.6 days).
The month with the least rainy days is February (8.3 days).
Average sea temperature in May
Fort Lauderdale, FL
- Average sea temperature in May: 80.8°F
The best month for swimming (with the highest average sea temperature) is August (86.3°F).
The coldest months (with the lowest average sea temperature) are January and February (74.2°F).
Average daylight in May /
Average sunshine in May
Fort Lauderdale, FL
- Average daylight in May: 13h and 24min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in May: 10h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).
Average sunshine days in May
Fort Lauderdale, FL
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is September (3.9 days).
Average UV index in May
Fort Lauderdale, 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 and December (UV index 5).
Average cloud cover in May
Fort Lauderdale, FL
- Average cloud cover in May: 28
The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 27).
Average visibility in May
Fort Lauderdale, 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).





