30YearWeather
Santorini in May
Santorini weather in May - Greece
😊Warm & Pleasant

Santorini Weather in May

Plan your May trip to Santorini, Greece. Based on 30 years of NASA data, expect temperatures of 21°C (high) to 17°C (low), with 5% rain probability and 8 hours of daily sunshine. The Aegean Sea averages 19°C in May. Great conditions with only 0 rainy days expected.

Avg High
21°C

Hottest around day 31

Avg Low
17°C

Coolest around day 1

Rainy Days
0days

5% avg rain chance

Sunshine
8hrs/day

Spring season

Sea Temperature in May

Aegean Sea(Αιγαίο Πέλαγος)

19.3°C

Monthly Average

Water Feel
🏊Pleasant

Comfortable for most swimmers

Swim Rating
👍Good for swimming

Based on average sea surface temperature

Body of Water
Aegean Sea

Αιγαίο Πέλαγος

Santorini coastline

Santorini May Weather Calendar

Click any day to see detailed weather information

Currency

EUR

Euro

Language

Greek

Driving

Right side

Connect

There are some local radio stations in S...

Safety

High Safety

GPI: 1.838

Travel Intelligence

Exclusive flight analytics & health data for Santorini

Smart Flight Estimator

Airport-to-Airport Logistics

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Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Low Traffic
20/ 100
Traffic Index

Quieter airport

Peak Daily Arrivals

0

slots per day

Peak

Jul

Low

Jan

Monthly Traffic Distribution

8
Jan
10
Feb
11
Mar
23
Apr
31
May
39
Jun
49
Jul
48
Aug
40
Sep
28
Oct
12
Nov
11
Dec
Traffic Level
Low Season

Key Connections

Athens Eleftherios Venizelos (ATH)
Milan Malpensa (MXP)
Nápoli Naples (NAP)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Greece. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Greece.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Greece.If rabies exposures occur while in Greece, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is May a Good Time to Visit Santorini?

👍Great time to visit - recommended
Short Answer

Perfect travel weather awaits in Santorini during May - 21°C highs, 71% humidity, and 5% rain probability make this an optimal time for outdoor activities.

Decision Factors

Vaccinations required

Yellow Fever

Seismically active region

13 earthquakes recorded in this month (30-year data)

Ideal temperature range

21.4°C - perfect for sightseeing and outdoor activities

Excellent dry conditions

Only 5% rain probability - ideal for outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Crimean-Congo Hemorrhagic fever, Leishmaniasis

Plenty of sunshine

12.4h of sunshine daily

Good For

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 21.4°C temperatures and low 5% rain risk

  • 👴
    Elderly travelers

    Comfortable 21.4°C temperature range with manageable humidity

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 21.4°C, 5% rain chance

  • 📸
    Photographers

    12.4h sunshine, 75% clear skies for golden hour shots

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

Who Should Avoid

Suitable for most traveler types

930 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Santorini in May averages 21°C with 5% precipitation probability."

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

Frequently Asked Questions: Santorini in May

What are the temperatures in Santorini in May?

Daytime highs average 21°C, nights drop to 17°C. Temperatures remain fairly consistent.

How many rainy days in Santorini in May?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Santorini in May?

Comfortable casual wear with a light jacket for evenings.

Is May peak season in Santorini?

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