Peak in September
Coolest in January
Heavy in September
Peak in dry season
Sea Temperature
Coastal Waters(Ocean)
Annual Average
Perfect for swimming and water sports
Based on average sea surface temperature
Ocean
Key West coastline
Key West Monthly Weather Guide
Click any month to explore daily weather forecasts
January
February
March
April
May
June
July
August
September
October
November
December
Essential Travel Info for Key West
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Best Time to Visit Key West
Location, climate overview & historical trends
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📍 24.5551° N, 81.7800° W
Open in Google MapsKey West is a prominent destination in United States.
Located at 24.56°N latitude,Key West experiences a subtropical climate with distinct wet and dry seasons.
Based on 30 years of data, September is the warmest month (avg. 29°C), while January is the coolest. September sees the most rain (43% chance), making March the driest month.
Historical Climate Trend
30-Year Analysis+1.22°C
Total over 30 years
+0.41°C
Per decade
Linear regression analysis of historical maximum temperatures for Key West, based on 1995-2024 satellite data from NASA POWER.
Best Time to Visit
NASA POWER Data (1991-2021)January, February, March
Best months to visit
26°C
Avg High
Based on 30 years of NASA satellite data,Key West receives approximately 461mm of rainfall annually. These months offer optimal temperatures and minimal rain probability for your visit.
Climate Trends
EXCLUSIVE1995-2040 Temperature Trend
1995 Avg
25.7°
2024 Avg
26.7°
2040 Proj
27.1°
+0.41°C
per decade (observed)
+0.28°C
per decade (CMIP6)
🌡️ Key West has warmed by +1.2°C since 1995. By 2040, an additional +0.4°C is projected (based on CMIP6 rate of 0.278°C/decade), for a total of +1.7°C from 1995 baseline.
NASA POWER (1995-2024) + CMIP6 (CMCC_CM2_VHR4, EC_Earth3P_HR, FGOALS_f3_H, HiRAM_SIT_HR, MRI_AGCM3_2_S, NICAM16_8S)
Travel Intelligence
Exclusive flight analytics & health data for Key West
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Flight Connectivity Analysis
Airport traffic data & seasonal patterns
Off the beaten path
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Peak
Dec
Low
Jul
Monthly Traffic Distribution
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Health & Safety Advisory
CDC travel health recommendations
No Special Vaccinations Required
Standard travel precautions apply
Source: CDC Travelers' Health
View Complete Health GuideKey West Climate Data by Month
Historical temperature and precipitation averages
| Month | Avg High (°C) | Rain Probability (%) | Status |
|---|---|---|---|
| January | 22°C | 10% | ✨ Perfect |
| February | 23°C | 8% | ✨ Perfect |
| March | 24°C | 8% | ✨ Perfect |
| April | 25°C | 9% | ✨ Perfect |
| May | 27°C | 16% | ✨ Perfect |
| June | 28°C | 34% | 😊 Pleasant |
| July | 29°C | 28% | 😊 Pleasant |
| August | 29°C | 34% | 😊 Pleasant |
| September | 29°C | 43% | 🌧️ Rainy |
| October | 28°C | 30% | 😊 Pleasant |
| November | 25°C | 11% | ✨ Perfect |
| December | 24°C | 12% | ✨ Perfect |
Weather in Cities Near Key West
Explore climate data for popular destinations within easy reach
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Compare weather conditions with nearby destinations for your trip planning
Compare Key West Weather vs Popular Destinations
Similar Climate Destinations
Discover destinations with weather similar to Key West
Antalya
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Bangalore
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These destinations share similar weather patterns with Key West. Perfect alternatives if you're looking for the same climate in a different location.
Key West Weather FAQ
When is the best time to visit Key West?
Honestly, look for months with mild temperatures (20°C-25°C) and low rain chance. Based on historical data, January, February, March are usually great choices.
When is the hottest month in Key West?
September is historically the hottest month in Key West with average highs of 29°C.
When does it rain the most in Key West?
September typically sees the highest probability of rain (43%).
Is Key West expensive?
Prices vary by season. The "Perfect" weather months usually coincide with peak tourist season and higher prices, while the rainy or cold months offer better deals.