Symi 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: June – October
What is the weather like in Symi in December?
In December, Symi is mild: daytime highs average 16 °C, and nights cool down to about 14 °C. The sea averages 19.6 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 127 mm in total. All in all, December is not an ideal month for a holiday in Symi.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 46 | 23 | 18 |
| Day | 20° | 16° | 15° |
| Night | 17° | 14° | 12° |
| Sea | 22° | 20° | 18° |
| Sun | 6 h | 5 h | 5 h |
| Rain days | 8 | 12 | 13 |
More details for December
- Daylight
- 9 h 41 min07:13 – 16:54
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 24 km/haverage daily peakAll months
- Cloud cover
- 47 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+2Europe/Athens
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %37 %
- Sunshineweight 20 %27 %
- Few rainy daysweight 20 %40 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
Symi in December: quick answers
Is Symi hot in December?
No. In December, Symi is mild: daytime highs average 16 °C and nights drop to about 14 °C.
Can you swim in Symi in December?
Only if you don't mind cold water: in December the sea averages just 19.6 °C. Comfortable swimming is possible from June to November.
Does it rain much in Symi in December?
Rain is frequent, with about 12 rainy days and 127 mm in total.
Symi month by month
The whole year in SymiAll destinations: GreeceGreek Islands weather in DecemberWhere 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). Sources & licences