Siesta Key
Florida, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Siesta Key, FL

The ideal ocean temperature of 78.4°F (25.8°C) makes May in Siesta Key, Florida, the best time for swimming and other water activities.

Ocean temperature

In Siesta Key, Florida, the average water temperature is 78.4°F (25.8°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in May is 13.5h.

What is the water temperature in May in Siesta Key?

In Siesta Key, in May, the average water temperature is 78.4°F (25.8°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in May in Siesta Key?

The average length of the day in May in Siesta Key is 13.5h.
Average sea temperature in May - Siesta Key, FL
  • Average sea temperature in May: 78.4°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).

Average daylight in May - Siesta Key, FL
  • Average daylight in May: 13.5h

The month with the longest days is June (Average daylight: 13.8h).
The month with shortest days is December (Average daylight: 10.4h).