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

Santorini Weather in September

Plan your September trip to Santorini, Greece. Based on 30 years of NASA data, expect temperatures of 26°C (high) to 22°C (low), with 1% rain probability and 8 hours of daily sunshine. The Aegean Sea averages 25°C in September. Great conditions with only 0 rainy days expected.

Avg High
26°C

Hottest around day 1

Avg Low
22°C

Coolest around day 30

Rainy Days
0days

1% avg rain chance

Sunshine
8hrs/day

Autumn season

Sea Temperature in September

Aegean Sea(Αιγαίο Πέλαγος)

25°C

Monthly Average

Water Feel
☀️Warm

Perfect for swimming and water sports

Swim Rating
✅Excellent for swimming

Based on average sea surface temperature

Body of Water
Aegean Sea

Αιγαίο Πέλαγος

Santorini coastline

Santorini September Weather Calendar

Click any day to see detailed weather information

Day 1
clear-day
Sunny
27°C0%
Day 2
clear-day
Sunny
27°C0%
Day 3
clear-day
Sunny
27°C0%
Day 4
clear-day
Sunny
27°C0%
Day 5
clear-day
Sunny
27°C0%
Day 6
clear-day
Sunny
26°C0%
Day 7
clear-day
Sunny
26°C0%
Day 8
clear-day
Sunny
26°C0%
Day 9
clear-day
Sunny
26°C1%
Day 10
clear-day
Sunny
26°C1%
Day 11
clear-day
Sunny
26°C1%
Day 12
clear-day
Sunny
26°C1%
Day 13
clear-day
Sunny
26°C1%
Day 14
clear-day
Sunny
26°C0%
Day 15
clear-day
Sunny
26°C0%
Day 16
clear-day
Sunny
26°C0%
Day 17
clear-day
Sunny
26°C0%
Day 18
clear-day
Sunny
26°C0%
Day 19
partly-cloudy-day
Nice
25°C0%
Day 20
partly-cloudy-day
Nice
25°C1%
Day 21
partly-cloudy-day
Nice
25°C2%
Day 22
partly-cloudy-day
Nice
25°C2%
Day 23
partly-cloudy-day
Nice
25°C2%
Day 24
partly-cloudy-day
Nice
24°C2%
Day 25
partly-cloudy-day
Nice
24°C3%
Day 26
partly-cloudy-day
Nice
24°C5%
Day 27
partly-cloudy-day
Nice
24°C5%
Day 28
partly-cloudy-day
Nice
24°C6%
Day 29
partly-cloudy-day
Nice
24°C6%
Day 30
partly-cloudy-day
Nice
24°C5%

Essential Travel Info for Santorini

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

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

unlock smart flight estimates

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 September a Good Time to Visit Santorini?

👍Great time to visit - recommended
Short Answer

Beach lovers rejoice: Santorini's September features 25°C sea temperatures alongside 26°C air temps. Just 1% rain risk makes this prime swimming season.

Decision Factors

Vaccinations required

Yellow Fever

Seismically active region

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

Ideal temperature range

25.5°C - perfect for sightseeing and outdoor activities

Excellent dry conditions

Only 1% rain probability - ideal for outdoor activities

Pleasant swimming conditions

25°C sea temperature

Health precautions needed

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

Good For

  • 🏖️
    Beach lovers

    25°C warm seas and 1% rain probability

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 25.5°C temperatures and low 1% rain risk

  • 👴
    Elderly travelers

    Comfortable 25.5°C temperature range with manageable humidity

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 25.5°C, 1% rain chance

  • 📸
    Photographers

    11.3h sunshine, 89% clear skies for golden hour shots

Who Should Avoid

Suitable for most traveler types

Related Guides

Best Time to VisitWhen to AvoidSantorini Overview
900 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Santorini in September averages 26°C with 1% precipitation probability."

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

Frequently Asked Questions: Santorini in September

What are the temperatures in Santorini in September?

Daytime highs average 26°C, nights drop to 22°C. Temperatures remain fairly consistent.

How many rainy days in Santorini in September?

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

What to wear in Santorini in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Santorini?

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