Ýdra 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 – September
What is the weather like in Ýdra in December?
In December, Ýdra is cool: daytime highs average 15 °C, and nights cool down to about 11 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 4 hours of sunshine a day. Rain falls on about 8 days, adding up to 53 mm. All in all, December is not an ideal month for a holiday in Ýdra.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 36 | 21 | 21 |
| Day | 19° | 15° | 13° |
| Night | 15° | 11° | 9° |
| Sea | 21° | 18° | 16° |
| Sun | 5 h | 4 h | 5 h |
| Rain days | 6 | 8 | 7 |
More details for December
- Daylight
- 9 h 37 min07:33 – 17:10
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 53 %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 %11 %
- Sunshineweight 20 %17 %
- Few rainy daysweight 20 %75 %
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
Ýdra in December: quick answers
Is Ýdra hot in December?
No. In December, Ýdra is cool: daytime highs average 15 °C and nights drop to about 11 °C.
Can you swim in Ýdra in December?
Only if you don't mind cold water: in December the sea averages just 17.8 °C. Comfortable swimming is possible from June to November.
Does it rain much in Ýdra in December?
Rain falls on about 8 days, adding up to 53 mm.
Ýdra month by month
The whole year in ÝdraAll 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