Thessaloníki climate
Thessaloníki (Greece) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 15 °C60 °F, and about 515 mm20 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Thessaloníki climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 847 | 134 | 540 | 471.9 | 11 |
| Feb | 1050 | 236 | 643 | 381.5 | 8 |
| Mar | 1457 | 440 | 948 | 481.9 | 2 |
| Apr | 1864 | 847 | 1355 | 401.6 | 0 |
| May | 2475 | 1356 | 1966 | 461.8 | 0 |
| Jun | 3085 | 1865 | 2475 | 371.5 | 0 |
| Jul | 3391 | 2170 | 2781 | 291.1 | 0 |
| Aug | 3391 | 2170 | 2781 | 241.0 | 0 |
| Sep | 2781 | 1762 | 2271 | 471.9 | 0 |
| Oct | 2169 | 1152 | 1661 | 512.0 | 0 |
| Nov | 1559 | 744 | 1152 | 441.7 | 1 |
| Dec | 949 | 236 | 643 | 642.5 | 9 |
| Year | 3391 | 134 | 1560 | 51520 | 30 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 68% | 1.9 | 9:34 |
| Feb | 80% | 68% | 2.7 | 10:36 |
| Mar | 76% | 65% | 3.8 | 11:49 |
| Apr | 71% | 62% | 5.0 | 13:14 |
| May | 65% | 58% | 6.1 | 14:26 |
| Jun | 57% | 44% | 7.0 | 15:04 |
| Jul | 50% | 31% | 7.2 | 14:48 |
| Aug | 50% | 32% | 6.4 | 13:46 |
| Sep | 60% | 51% | 4.7 | 12:24 |
| Oct | 72% | 58% | 3.2 | 11:02 |
| Nov | 79% | 65% | 2.1 | 9:51 |
| Dec | 83% | 67% | 1.6 | 9:16 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Thessaloníki is like
The warmest month is July, with an average high of 33 °C91 °F and a low of 21 °C70 °F. The coldest is January, when highs average 8 °C47 °F and lows 1 °C34 °F. Seasons are strongly marked: the warmest month is on average 22.5 °C40.5 °F warmer than the coldest.
Annual precipitation is moderate at about 515 mm20 in. The wettest three-month stretch is October–December, which brings 31% of the annual total. The wettest month is December (64 mm2.5 in), the driest is August (24 mm1.0 in).
Relative humidity ranges from 50% in July to 83% in December. The clearest skies (lowest average cloud amount, 31%) are typical of July. Average wind speed near the ground ranges from 6 km/h (4 mph) in August to 9 km/h (5 mph) in February. Daylight lasts from about 9.3 hours in December to 15.1 hours in June.
Best time to visit Thessaloníki
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–June and September and October: average highs of 18 °C64 °F to 30 °C85 °F with 37 mm1.5 in to 51 mm2.0 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 8 °C47 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Thessaloníki
- Winter (December–February) — highs 847 to 10 °C50 °F, lows 134 to 2 °C36 °F, about 50 mm2.0 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1457 to 24 °C75 °F, lows 440 to 13 °C56 °F, about 45 mm1.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Summer (June–August) — highs 3085 to 33 °C91 °F, lows 1865 to 21 °C70 °F, about 30 mm1.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1559 to 27 °C81 °F, lows 744 to 17 °C62 °F, about 47 mm1.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
How Thessaloníki compares
Compared with Skopje, about 196 km to the northwest, Thessaloníki is on average 1.4 °C2.5 °F warmer and receives 38% less precipitation (515 mm20 in vs 831 mm33 in). The difference is largest in January (2.6 °C4.6 °F warmer).
Of the 6 places in Greece covered by World Climates, Thessaloníki is the 6th warmest by annual mean temperature and the 2nd wettest by annual precipitation. See all of them on the Greece climate page.
Places in other countries with the most similar temperature and rainfall pattern: Tébessa (Algeria, Csa), Derbent (Russia, BSk) and Bologna (Italy, Cfa).
Nearby places
- Lárisa 121 km · 17 °C63 °F · 499 mm20 in
- Ohrid 187 km · 13 °C55 °F · 767 mm30 in
- Skopje 196 km · 14 °C57 °F · 831 mm33 in
- Plovdiv 226 km · 14 °C58 °F · 661 mm26 in
- Sofia 231 km · 12 °C53 °F · 705 mm28 in
- Elbasan 245 km · 17 °C62 °F · 802 mm32 in
- Prizren 253 km · 13 °C56 °F · 861 mm34 in
- Pristina 269 km · 11 °C52 °F · 778 mm31 in
Frequently asked questions
What is the warmest month in Thessaloníki?
July is the warmest month in Thessaloníki, with an average high of 33 °C (91 °F) and an average low of 21 °C (70 °F).
What is the coldest month in Thessaloníki?
January is the coldest month, with an average high of 8 °C (47 °F) and an average low of 1 °C (34 °F).
When does it rain the most in Thessaloníki?
December is the wettest month with about 64 mm (2.5 in) of precipitation; August is the driest with about 24 mm (1.0 in).
What is the best time to visit Thessaloníki?
Judging by long-term averages, the most comfortable months are April–June and September and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.