- Save on beach holidays with cheap deals from On the Beach
- Plus pay just £30 low deposit per person
- Spread the cost until 2 weeks before departure
Key West weather in May 2021
Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.
- 2929°C max day temperature
- 88 days with some rainfall
- 2323°C min night temperature
- 1313 hours of daylight per day
- HHigh heat & humidity
- 107107 mm of monthly rainfall
- 1111 (Extreme) UV index
- 2727°C sea temperature
The May weather guide for Key West, Florida shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Recommended for Florida
How hot is it in Key West in May?
Daytime temperatures usually reach 29°C in Key West in May with high heat and humidity, falling to 23°C at night.
How sunny is it in Key West in May?
There are normally 11 hours of bright sunshine each day in Key West in May - that's 79% of daylight hours.
How warm is the sea around Key West in May?
The average sea temperature around Key West in May is 27°C.
Does it rain in Key West in May?
There are usually 8 days with some rain in Key West in May and the average monthly rainfall is 107mm.
Key West sunrise & sunset times for May 2021
Browse the sunrise & sunset times for Key West in May 2021. Select a month to view Key West sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Saturday, 1st May 2021||06:52||19:57|
|Sunday, 16th May 2021||06:43||20:04|
|Monday, 31st May 2021||06:38||20:12|
- Save up to 50% on last minute summer holidays
- Book villas in France, Greece, Italy, Spain & Portugal
- Stay at luxury accommodation from villas to chateaux
Metric (°C / mm) | Imperial (°F / inches)
Discover more about Florida
Where is hot in Florida in May for 2021/2022?
Below are average maximum temperatures at popular destinations in Florida in May. Select a destination to see more weather parameters.
- Fort Lauderdale
- St Pete Beach
- Daytona Beach
- Key West
- Panama City
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.