Late summer · Weather & things to do
Key West in August
Key West's warmest month brings highs averaging 86°F (30°C), lows of 84°F (29°C) and about 6.1 in (156 mm) of rain.
Its comfort score of 61/100 is still Good, though it ranks 11th of 12 here.
- Avg high
- 86°F (30°C)
- Avg low
- 84°F (29°C)
- Rain
- 6.1 in (156 mm)
- Humidity
- 75%
- Cloud cover
- 58%
- Daylight
- ~12 h 51 min
- Comfort score
- 61/100 · Good
What August feels like
Afternoons run hot at about 86°F (30°C), which leaves mornings and evenings as the time for walking.
Nights stay warm too, with lows averaging 84°F (29°C).
Humidity averages 75%, so the air feels sticky and the heat feels stronger than the thermometer says.
Rain is a real factor, with about 6.1 in (156 mm) across the month.
Plan around August
August is one of the lower-scoring months here; the best are November – April.
- Inside the wettest three-month stretch, July – September.
- Comfort slips from 66/100 in July to 61/100.
- Our Miami Beach Getaway route recommends Nov – Apr, so August falls outside its suggested window.
- Our Florida Keys Adventure route recommends Dec – May, so August falls outside its suggested window.
What to pack for August
- Light, breathable clotheshighs average 86°F
- Sunscreen, sunglasses and a hathigh UV on clear days
- Refillable water bottleeasy to dehydrate in the heat
- Quick-dry fabrics75% average humidity
- Rain jacket and waterproof shoesfrequent rain
- Comfortable walking shoesmost picks involve some walking
What to do in Key West in August
With 6.1 in of rain, these picks lean toward food, drink and places with a roof, with outdoor options when the weather breaks.
Kermit's Key West Key Lime Shoppe
Key lime pie on a stick (chocolate-dipped, frozen) and key lime goods.
Why now An indoor-leaning stop for a month with 6.1 in of rain.
Ernest Hemingway Home and Museum
Hemingway's 1930s home with guided tours and dozens of six-toed cats.
Why now A good rainy-day backup in August.
Captain Tony's Saloon
The original Sloppy Joe's location (1930s), with a tree growing through the roof and live music.
Why now A sit-down stop to wait out showers in a month with 6.1 in of rain.
The Green Parrot Bar
Locals' bar since 1890 with live music most nights and no TV screens.
Why now Easy to slot in when August's rain moves in.
El Siboney
Cash-friendly Cuban restaurant serving roast pork and plantains in large portions.
Why now Keeps part of the day dry on wetter August days.
Pepe's Cafe
Key West's oldest restaurant (1909), serving seafood and steaks under a backyard arbor.
Why now A break from 86°F afternoons.
Nearby in August
- Bahia Honda & the Lower Keys in August~33 mi · highs 86°F, 6.0 in rain · similar daytime temperatures, about as wet
- Everglades in August~75 mi · highs 87°F, 7.6 in rain · similar daytime temperatures, wetter
- Key Largo in August~91 mi · highs 86°F, 7.2 in rain · similar daytime temperatures, wetter
- Miami in August~130 mi · highs 86°F, 7.2 in rain · similar daytime temperatures, wetter
These averages also cover Old Town & Duval Street.
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Key West in August: quick answers
Is August a good time to visit Key West?
It's one of the tougher months here, scoring 61/100, held back mainly by rain. The best months are November – April. Expect highs of 86°F (30°C) and 6.1 in (156 mm) of rain. Our Miami Beach Getaway route recommends Nov – Apr, so August is outside its suggested window.
How hot is Key West in August?
Average highs are 86°F (30°C) and average lows 84°F (29°C), making it the warmest month by daytime highs.
Does it rain a lot in Key West in August?
Yes: about 6.1 in (156 mm) of rain falls across August on average, the 3rd-wettest month of the year. The annual total is about 41.5 in (1054 mm).
What should I pack for Key West in August?
Bring light, breathable clothes (highs average 86°F), sunscreen, sunglasses and a hat (high UV on clear days), refillable water bottle (easy to dehydrate in the heat), quick-dry fabrics (75% average humidity) and rain jacket and waterproof shoes (frequent rain).
More on Key West
Planning Key West in August?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.