30YearWeather
Key West in May
Key West weather in May - United States
😊Warm & Pleasant

Key West Weather in May

Plan your May trip to Key West, United States. Based on 30 years of NASA data, expect temperatures of 27°C (high) to 25°C (low), with 16% rain probability and 8 hours of daily sunshine. The Coastal Waters averages 29°C in May. Great conditions with only 1 rainy days expected.

Avg High
27°C

Hottest around day 31

Avg Low
25°C

Coolest around day 1

Rainy Days
1days

16% avg rain chance

Sunshine
8hrs/day

Spring season

Sea Temperature in May

Coastal Waters(Ocean)

28.6°C

Monthly Average

Water Feel
🌴Tropical

Perfect for swimming and water sports

Swim Rating
Excellent for swimming

Based on average sea surface temperature

Body of Water
Coastal Waters

Ocean

Key West coastline

Key West May Weather Calendar

Click any day to see detailed weather information

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Safety

Moderate Safety

GPI: 2.44

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.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Remote
16/ 100
Traffic Index

Off the beaten path

Peak Daily Arrivals

0

slots per day

Peak

Dec

Low

Jul

Monthly Traffic Distribution

33
Jan
34
Feb
39
Mar
35
Apr
35
May
37
Jun
18
Jul
30
Aug
25
Sep
22
Oct
34
Nov
39
Dec
Traffic Level
Low Season

Key Connections

Miami (MIA)
Atlanta Hartsfield Jackson (ATL)
Charlotte Douglas (CLT)
Chicago O'Hare (ORD)
Washington Ronald Reagan National (DCA)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is May a Good Time to Visit Key West?

👍Recommended for planning your trip
Short Answer

Beach lovers rejoice: Key West's May features 28.6°C sea temperatures alongside 27°C air temps. Just 16% rain risk makes this prime swimming season.

Decision Factors

Warm tropical seas

28.6°C sea temperature - Hot Soup

Peak tourist season

90% of annual peak - expect crowds and peak prices

Plenty of sunshine

11.9h of sunshine daily

Good For

  • 🏖️
    Beach lovers

    28.6°C warm seas and 16% rain probability

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 26.9°C, 16% rain chance

  • 📸
    Photographers

    11.9h sunshine, 63% clear skies for golden hour shots

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 94/100 with romantic weather conditions

Who Should Avoid

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 👴
    Elderly travelers

    77% humidity creates difficult conditions

930 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Key West in May averages 27°C with 16% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Key West in May

What are the temperatures in Key West in May?

Daytime highs average 27°C, nights drop to 25°C. Temperatures remain fairly consistent.

How many rainy days in Key West in May?

Expect around 1 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Key West in May?

Comfortable casual wear with a light jacket for evenings.

Is May peak season in Key West?

This is typically peak season with higher prices. Book 2-3 months ahead.