Key West Weather in May

May in Key West sees daytime temperatures around 30°C (86°F) and lows of 25°C (77°F) at night. With around 63 mm (2.5 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Key West in May

This month experiences about 9 days of rain according to historical data, averaging 63 mm (2.5 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Key West in May

Expect highs of 30°C (86°F) in Key West in May, with nights dropping to around 25°C (77°F). This kind of day-to-night contrast is typical for this time of year. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.

Sunshine in Key West in May

Expect a lot of sunshine this month, with about 341 hours of sun. These sunny conditions add to the overall experience.

Average water temperature in May

With water at 27°C (81°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, April, 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.