The month in detail
What to expect in May
Spring marks the start of the good season in Thessaloniki. Temperatures rise (24°C) and tourists have not yet arrived en masse. Rain risk remains low (23% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if September (8.9/10) remains theoretically better.
May ranks 2 out of 12 months in Thessaloniki. Compared to April: +4°C daytime, +1.4h of sun per day.
This month's conditions
What it's like in May
UV index
7 · high
sunscreen and hat advised
Feels like
comfortable
13°
Sea
19°C
cool, invigorating
Daylight
14.3h of daylight
Air quality
good
AQI 30
Compare
Is May the right month?
The best month in Thessaloniki is September (8.9/10), 0.6 pt higher than May.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Thessaloniki
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Thessaloniki
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Greece
🗣️LanguageGreek
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trendData unavailable
🔥Hottest monthJuly · 33°C
❄️Coolest monthJanuary · 11°C
🌧️Rainiest month ⓘMarch · 25%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
🛂VisaSchengen · 90 days
Explore
Other destinations in May
If May doesn't convince you for this destination, compare with others.
Location
Where is Thessaloniki ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
GreeceTemperate oceanic climate with a 8.9 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
40.64°N · 22.94°E
Questions
Frequently asked questions
What is the best time to visit Thessaloniki?
September is the best month with 28.0°C highs, 18.0°C lows, 7.7h of sunshine and 13.0% rainy days. The months of September & May offer comparable conditions.
How many hours of sunshine does Thessaloniki get in September?
Thessaloniki averages 7.7 sunshine hours per day in September. It is the sunniest month with a climate score of 8.5/10.
What is the rainiest month in Thessaloniki?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Thessaloniki in September?
In September, overnight lows reach 18.0°C, while afternoon highs average 28.0°C.
Is Thessaloniki good in winter?
In winter (December-February), Thessaloniki scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains September with a score of 8.5/10.
When should you avoid Thessaloniki?
January is the most difficult month to visit Thessaloniki, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Thessaloniki in May?
In May, the sea averages 19°C in Thessaloniki: cool, invigorating. Swimming is possible but brisk; sensitive swimmers may prefer a wetsuit.
Do you need sun protection in Thessaloniki in May?
The average UV index reaches 7 in May in Thessaloniki (high), with about 14.3h of daylight. Sunscreen and hat advised.