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

Thessaloniki Weather in September

Plan your September trip to Thessaloniki, Greece. Based on 30 years of NASA data, expect temperatures of 27°C (high) to 18°C (low), with 15% rain probability and 8 hours of daily sunshine. The Aegean Sea averages 28°C in September. Great conditions with only 0 rainy days expected.

Avg High
27°C

Hottest around day 1

Avg Low
18°C

Coolest around day 30

Rainy Days
0days

15% avg rain chance

Sunshine
8hrs/day

Autumn season

Sea Temperature in September

Aegean Sea(Αιγαίο Πέλαγος)

27.5°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
Aegean Sea

Αιγαίο Πέλαγος

Thessaloniki coastline

Thessaloniki September Weather Calendar

Click any day to see detailed weather information

Day 1
clear-day
Sunny
30°C14%
Day 2
clear-day
Sunny
29°C17%
Day 3
clear-day
Sunny
29°C17%
Day 4
clear-day
Sunny
29°C19%
Day 5
cloudy
Cloudy
28°C21%
Day 6
cloudy
Cloudy
28°C22%
Day 7
cloudy
Cloudy
28°C21%
Day 8
clear-day
Sunny
28°C18%
Day 9
clear-day
Sunny
27°C17%
Day 10
clear-day
Sunny
27°C14%
Day 11
clear-day
Sunny
28°C12%
Day 12
clear-day
Sunny
28°C13%
Day 13
clear-day
Sunny
28°C13%
Day 14
clear-day
Sunny
28°C12%
Day 15
clear-day
Sunny
27°C11%
Day 16
clear-day
Sunny
27°C10%
Day 17
clear-day
Sunny
27°C11%
Day 18
clear-day
Sunny
26°C14%
Day 19
clear-day
Sunny
26°C17%
Day 20
partly-cloudy-day
Nice
25°C19%
Day 21
partly-cloudy-day
Nice
25°C18%
Day 22
partly-cloudy-day
Nice
25°C16%
Day 23
partly-cloudy-day
Nice
25°C15%
Day 24
partly-cloudy-day
Nice
25°C12%
Day 25
partly-cloudy-day
Nice
25°C12%
Day 26
partly-cloudy-day
Nice
25°C14%
Day 27
partly-cloudy-day
Nice
25°C14%
Day 28
partly-cloudy-day
Nice
24°C16%
Day 29
partly-cloudy-day
Nice
24°C16%
Day 30
partly-cloudy-day
Nice
24°C15%

Essential Travel Info for Thessaloniki

🗓️ Best Time to Visit📖 Travel Guide🍴 Food Guide

Currency

EUR

€ Euro

Language

Greek

Driving

Right side

Connect

As of 2021, Thessaloniki has 5G from Cos...

Safety

High Safety

GPI: 1.838

Travel Intelligence

Exclusive flight analytics & health data for Thessaloniki

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

Moderate
40/ 100
Traffic Index

Balanced traffic

Peak Daily Arrivals

0

slots per day

Peak

Aug

Low

Jan

Monthly Traffic Distribution

51
Jan
72
Feb
74
Mar
76
Apr
80
May
95
Jun
96
Jul
100
Aug
94
Sep
85
Oct
64
Nov
68
Dec
Traffic Level
Low Season

Key Connections

Athens Eleftherios Venizelos (ATH)
Larnarca Larnaca (LCA)
Düsseldorf (DUS)
Frankfurt-am-Main (FRA)
Heraklion Nikos Kazantzakis (HER)

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 Thessaloniki?

👍Recommended for planning your trip
Short Answer

Ideal beach conditions in Thessaloniki during September: 27.5°C turquoise waters, 27°C air, 15% rain. 0.1m calm waves suit families and swimmers alike.

Decision Factors

Vaccinations required

Yellow Fever

Warm tropical seas

27.5°C sea temperature - Tropical Bath

Peak tourist season

94% of annual peak - expect crowds and peak prices

Health precautions needed

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

Plenty of sunshine

10.3h of sunshine daily

Calm, family-friendly seas

0.12m wave height - Lake-like

Good For

  • 🏖️
    Beach lovers

    27.5°C warm seas and 15% rain probability

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 26.5°C temperatures and low 15% rain risk

  • 🥾
    Outdoor enthusiasts

    Ideal hiking conditions: 26.5°C, 15% rain chance

  • 📸
    Photographers

    10.3h sunshine, 64% clear skies for golden hour shots

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

Who Should Avoid

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

Related Guides

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

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Thessaloniki in September averages 27°C with 15% precipitation probability."

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

Frequently Asked Questions: Thessaloniki in September

What are the temperatures in Thessaloniki in September?

Daytime highs average 27°C, nights drop to 18°C. Temperatures remain fairly consistent.

How many rainy days in Thessaloniki in September?

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

What to wear in Thessaloniki in September?

Comfortable casual wear with a light jacket for evenings.

Is September peak season in Thessaloniki?

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