Thessaloniki weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: April – June, September – October
What is the weather like in Thessaloniki in December?
In December, Thessaloniki is cool: daytime highs average 11 °C, and nights cool down to about 3 °C. The sea averages 15.5 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 10 rainy days and 93 mm in total. All in all, December is not an ideal month for a holiday in Thessaloniki.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 60 | 32 | 31 |
| Day | 16° | 11° | 9° |
| Night | 8° | 3° | 2° |
| Sea | 18° | 16° | 14° |
| Sun | 4 h | 4 h | 4 h |
| Rain days | 9 | 10 | 9 |
More details for December
- Daylight
- 9 h 17 min07:45 – 17:02
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 14 km/haverage daily peak
- Cloud cover
- 58 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Athens
How the score comes together
- Temperatureweight 50 %25 %
- Sunshineweight 20 %13 %
- Few rainy daysweight 30 %57 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
Thessaloniki in December: quick answers
Is Thessaloniki hot in December?
No. In December, Thessaloniki is cool: daytime highs average 11 °C and nights drop to about 3 °C.
Can you swim in Thessaloniki in December?
Only if you don't mind cold water: in December the sea averages just 15.5 °C. Comfortable swimming is possible from June to October.
Does it rain much in Thessaloniki in December?
Rain is frequent, with about 10 rainy days and 93 mm in total.
Thessaloniki month by month
The whole year in ThessalonikiAll destinations: GreeceWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)