Key West weather in August 2021

Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.

32
32°C max day temperature
10
10 hours of sunshine per day
15
15 days with some rainfall
26
26°C min night temperature
13
13 hours of daylight per day
VH
Very High heat & humidity
125
125 mm of monthly rainfall
11
11 (Extreme) UV index
30
30°C sea temperature

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The August 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

On the Beach: Deal Finder - cheap holiday offers

Sale

Search for holiday deals with the On the Beach 'Deal Finder'
Simply select a month, departure airport and your party
Filter the holiday deals by holiday type and duration

Go to On the Beach deal >>

View all On the Beach offers

How hot is it in Key West in August?

Daytime temperatures usually reach 32°C in Key West in August with very high heat and humidity, falling to 26°C at night.

How sunny is it in Key West in August?

There are normally 10 hours of bright sunshine each day in Key West in August - that's 74% of daylight hours.

How warm is the sea around Key West in August?

The average sea temperature around Key West in August is 30°C.

Does it rain in Key West in August?

There are usually 15 days with some rain in Key West in August and the average monthly rainfall is 125mm.

What is the chance of a hurricane in Key West in August?

On average less than 1 day in August in Key West is likely to be affected by the passage of one or more tropical storms.

Key West sunrise & sunset times for August 2021

Browse the sunrise & sunset times for Key West in August 2021. Select a month to view Key West sunrise & sunset times for the next twelve months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st August 2021	06:56	20:11
Monday, 16th August 2021	07:02	20:00
Tuesday, 31st August 2021	07:08	19:46

Holiday Autos discount code: 10% off car hire worldwide

Save EXTRA 10% on cheap car hire worldwide
With this exclusive Holiday Autos discount code
Travel before 31st December 2020 (inclusive)

Show discount code

******vel

Redeem Holiday Autos discount code >>

Expires at 23:59 on Thursday 31st Dec 2020 · View all Holiday Autos offers

Metric (°C / mm) | Imperial (°F / inches)

Discover more about Florida

Where is hot in Florida in August for 2021/2022?

Below are average maximum temperatures at popular destinations in Florida in August. Select a destination to see more weather parameters.

More destinations & map >>

Be inspired

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

Related posts

Popular travel offers

*affiliate links: find out how we are funded and why this helps us remain free to use.