Key Biscayne Weather in May
May in Key Biscayne typically sees daytime highs of 29°C (84°F) and nighttime lows of 24°C (75°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Key Biscayne in May
Typically, you can expect about 15 days of rain this month, with 126 mm (5 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Key Biscayne in May
May in Key Biscayne sees highs of 29°C (84°F) and lows of 24°C (75°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Sunshine in Key Biscayne in May
Expect sunny days throughout the month, with an estimated 301 hours of sunshine. This makes it a pleasant time to visit Key Biscayne.
Wind Speed in Key Biscayne in May
Wind speeds average 5 m/s (10 knots) during May. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in May
With water at 26°C (79°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.If you prefer enjoying temperate temperatures and rain-free days, January, February, March, November and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key Biscayne's climate page.
Key Biscayne Temperature in May
Min Temperature
24°C (75°F)
Max Temperature
29°C (84°F)
Water Temperature
26°C (79°F) *
Chance of Rain
48%
Precipitation
126 mm (5 in)
Rainy days
15 days
Humidity
71% *
Windspeed
5 m/s (10 knots) *
Sunshine
301 hours *
Percentage Sunshine
72% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
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What to Wear in Key Biscayne in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 26°C (79°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Key Biscayne in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key Biscayne's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Key Biscayne climate overview or explore weather in the United States of America.
