Alonissos weather in December 2025

Expect 13°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Alonissos in December based on long-term weather averages. There is usually 10 days with some rainfall and 119 mm of average monthly rainfall in December.

  • 13°C maximum daytime temperature in December in Alonissos13
    13°C max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in December in Alonissos10
    10 days with some rainfall
  • 6°C minimum night-time temperature in December in Alonissos6
    6°C min night temperature
  • 9 hours of daylight per day in December in Alonissos9
    9 hours of daylight per day
  • No heat & humidity in December in Alonissos0
    No heat & humidity
  • 119 mm monthly rainfall in December in Alonissos119
    119 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Alonissos2
    2 (Low) UV index
  • 15°C sea temperature in December in Alonissos15
    15°C sea temperature

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The December weather guide for Greece (Alonissos) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Greece

How warm is it in Alonissos in December?

Daytime temperatures usually reach 13°C in Alonissos in December, falling to 6°C at night.

How sunny is it in Alonissos in December?

There are normally 4 hours of bright sunshine each day in Alonissos in December - that's 42% of daylight hours.

How warm is the sea around Alonissos in December?

The average sea temperature around Alonissos in December is 15°C.

Does it rain in Alonissos in December?

There are usually 10 days with some rain in Alonissos in December and the average monthly rainfall is 119mm.

Alonissos December sunrise & sunset times

Browse the sunrise and sunset times for Alonissos in December 2025. Select a month to view Alonissos sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:25 17:02
Tuesday, 16th December 2025 07:37 17:03
Wednesday, 31st December 2025 07:44 17:12

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