May weather forecastBay Harbor Islands, FL
May
Weather in May
May, the last month of the spring in Bay Harbor Islands, is another warm month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 76.6°F (24.8°C).Temperature
With the onset of May, a modest change to a still moderately hot 82.6°F (28.1°C) from April's 80.4°F (26.9°C) is noted in high-temperature. In Bay Harbor Islands, the month of May records an average minimum temperature of 76.6°F (24.8°C), a slight dip from the daily highs.Heat index
Throughout May, the heat index is appraised at a hot 87.8°F (31°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
The average relative humidity in May is 71%.Rainfall
In Bay Harbor Islands, during May, the rain falls for 13.1 days and regularly aggregates up to 1.34" (34mm) of precipitation. In Bay Harbor Islands, during the entire year, the rain falls for 157 days and collects up to 11.34" (288mm) of precipitation.Snowfall
January through August, October through December are months without snowfall in Bay Harbor Islands.Ocean temperature
In Bay Harbor Islands, in May, the average water temperature is 81.1°F (27.3°C).Note: Swimming, diving, and other water endeavors at temperatures between 77°F (25°C) and 84.2°F (29°C) are considered enjoyable and satisfying for extended periods without discomfort.
Daylight
The average length of the day in May in Bay Harbor Islands is 13h and 25min.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 Bay Harbor Islands, sunrise is at 6:28 am and sunset at 8:07 pm EDT.
Sunshine
In May, the average sunshine in Bay Harbor Islands, Florida, is 10.7h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Bay Harbor Islands. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 7 in May transforms into this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Warning! The Sun's UV rays intensify with reflections from sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Bay Harbor Islands, FL
- Average high temperature in May: 82.6°F
The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (73°F).
- Average low temperature in May: 76.6°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°F).
Average pressure in May
Bay Harbor Islands, 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
Bay Harbor Islands, FL
- Average wind speed in May: 10.1mph
The windiest month (with the highest average wind speed) is March (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in May
Bay Harbor Islands, FL
- Average humidity in May: 71%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (69%).
Average rainfall in May
Bay Harbor Islands, FL
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is August (1.97").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in May
Bay Harbor Islands, FL
- Average rainfall days in May: 13.1 days
The month with the highest number of rainy days is September (21.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in May
Bay Harbor Islands, FL
- Average snowfall in May: 0"
The month with the highest snowfall is September (0.04").
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0").
Average snowfall days in May
Bay Harbor Islands, FL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average sea temperature in May
Bay Harbor Islands, FL
- Average sea temperature in May: 81.1°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).
Average daylight in May /
Average sunshine in May
Bay Harbor Islands, 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 36min).
- Average sunshine in May: 10h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in May
Bay Harbor Islands, FL
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is March (20.3 days).
The month with the least sunshine days is September (4.4 days).
Average UV index in May
Bay Harbor Islands, 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 month with the lowest UV index is January (UV index 5).
Average cloud cover in May
Bay Harbor Islands, 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
Bay Harbor Islands, 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).





