Key West Weather in July
Key West in July sees very high daytime temperatures of 32°C (90°F) and nighttime lows of 27°C (81°F). Rainfall is fairly high this month at around 107 mm (4.2 in), so pack a rain jacket to stay dry.
Rainfall in Key West in July
Historically, approximately 18 days this month are expected to have rain, averaging 107 mm (4.2 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Key West in July
July in Key West brings very high temperatures, with highs of 32°C (90°F) and nights around 27°C (81°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in Key West in July
The month enjoys around 326 hours of sunshine, creating mostly sunny days with good weather conditions.
Average water temperature in July
At 30°C (86°F), the water feels bath-warm. Fine for swimming, but those looking for a cooling swim may be a bit disappointed.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, November and December typically offer the best weather for Key West.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key West's climate page.
Key West Temperature in July
Min Temperature
27°C (81°F)
Max Temperature
32°C (90°F)
Water Temperature
30°C (86°F)
Chance of Rain
59%
Precipitation
107 mm (4.2 in)
Rainy days
18 days
Humidity
73%
Sunshine
326 hours
Percentage Sunshine
78%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Key West typically stay consistent throughout July, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 27°C (81°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Key West in July
Browse day-by-day weather records for Key West spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Key West historical weather extremes in July
Our historical data for Key West spans 1976 to 2025, revealing these weather extremes.
- The warmest day in July was on July 3, 2023, with a maximum of 35°C (95°F).
- On July 22, 2001, Key West saw its coldest July day with temperatures maxing out at 27°C (81°F).
- The coldest night in July in Key West was on July 13, 2006, with a minimum of 23°C (73°F).
Best Places in the United States of America in July
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in July →
perfect weather
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unpleasant
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What to Wear in Key West in July
Warm but pleasant conditions in Key West in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 30°C (86°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Key West in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Key West's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Key West climate overview or explore weather in the United States of America.
