March 15 is statistically one of the best days of the year in Key West. With minimal rain risk (6%) and pleasant highs of 24°C, it's ideal for outdoor adventures. As it's peak season for Key West, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Key West
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Key West Weather Forecast for March 15
"Mild & Comfortable. Expect average highs of 23.9°C. 6% chance of rain."
What to Wear in Key West in March
Based on historical data for March 15, Key West typically experiences temperatures between 22.2°C and 23.9°C. We recommend packing t-shirt, light clothing to stay comfortable. Trends suggest it will stay mostly dry (6% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Key West
Smart Suitcase
- T-Shirt
- Light Clothing
Average High
23.9°C
Daytime Peak
Average Low
22.2°C
Nighttime Low
Feels Like
24.6°C
☀️ Feels accurate
Rain Chance
6%
Avg 0.3mm if it rains
Cloud Cover
37%
Overcast
Pressure
1017.8 hPa
Low volatility
Key West Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 97% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 18:00
Type I-II
🔴 20 min to burn
Type III-IV
🟡 30 min to burn
Type V-VI
🟢 50 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
19.4°C
Noticeable
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United States
Flight Traffic
High
100/100 pressure index
Health Advisory
Healthy
Routine only • View Details →
Landing Slots
~39
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Key West
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:37
☀️ Noon
12:37
🌇 Sunset
18:37
⏱️ Daylight
11h 59m
Wind Speed
29 km/h
Fresh breeze
Sunshine
10.9 hrs
Direct Sun (Cloud-free)
Humidity
76%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Key West
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Key West
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
Atlantic Hurricane Risk
Season: Jun - Nov
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Key West on March 15 averages 23.9°C with a 6% precipitation probability. Wedding/Outdoor Event Score: 96/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Key West Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
March 16
24°C • 8% rain
Score
97
March 17
24.1°C • 11% rain
Score
97
March 18
24°C • 11% rain
Score
97
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (March 15) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Key West Worth Visiting on March 15?
Planning a trip to Key West on March 15? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 23.9°C with a 6% historical precipitation risk.
✈️ Travel Logistics: Approximately 39 landing slots available daily during this period, indicating manageable crowd levels.
🌊 Coastal Conditions: Water temperature averages 25°C (tropical bath). Wave conditions are generally fun waves with heights around 1.1m.
📊 Historical Extremes: The hottest March 15 recorded in the last 30 years saw temperatures hit 25.8°C in 2024, while the coldest dropped to 17.5°C in 2018.