Weather in Thessaloniki in May 2025
Average weather
Average temperature in Thessaloniki in May
The expected average maximum temperature in May is +23°C with a maximum of +27°C and a minimum of +13°C.
The average maximum temperature goes up 36% by the end of the month, compared with the beginning of the month, from +21°C to +26°C.
Is Thessaloniki warm or cold in May?
Thessaloniki is typically warm in May.
Maximum temperatures go up compared to the previous month from +18°C to +24°C. The minimum temperature also goes up from +11°C to +15°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Thessaloniki:
Water temperature in Thessaloniki in May
Water in Thessaloniki in May is Fresh. It varies from +15°C to +22°C, with an average of +19°C. The air temperature averaging +24°C is higher than the water temperature.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Thessaloniki in May?
Climate in Thessaloniki in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +18°C | +24°C | +28°C | ||||
| Min. temperature | ||||||
| -1°C | +7°C | +11°C | ||||
| Max. temperature | ||||||
| +30°C | +34°C | +39°C | ||||
| Rainfall | ||||||
| 62 mm | 43 mm | 37 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +14°C | +19°C | +24°C | ||||
| Humidity | ||||||
| 66% | 63% | 57% | ||||
| Air pressure | ||||||
| 1013 HPa | 1013 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 10 | 10 | 15 | ||||
| Cloudy days | ||||||
| 7 | 7 | 4 | ||||
| Rainy days | ||||||
| 11 | 9 | 6 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +18°C to +24°C during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 62 mm to 43 mm. It feels drier, as humidity decreases from 66% to 63%. The average wind speed doesn’t change much during May, staying around 2 m/s. The amount of sunny days stay about the same, averaging 10 sunny days during the month.
But maybe it is worth considering traveling in June as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Thessaloniki is gradually increasing during May, going from 1 m/s to 1 m/s over the course of the month.
Rain
How was the weather last May in Thessaloniki?
Climate Change over Years
The climate in Thessaloniki in May has not changed much over the last 43 years.
The average temperature was the lowest in 1991 (+18°C) and the highest in 2013 (+23°C). The driest year was 1989 with only 258 mm of rainfall, and the wettest year was 2020 with 1565 mm.
FAQ
Is May a good time to visit Thessaloniki?
Can you sunbathe in Thessaloniki in May?
Can you swim in Thessaloniki in May?
Is Thessaloniki rainy in May?
Is it sunny in Thessaloniki in May?
Other cities in Greece
Monthly weather in Thessaloniki
Source of the data
For this page, we’ve looked at the typical weather in Thessaloniki, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.