Galissas weather in January 2025

Expect 13°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Galissas in January. Check more long-term weather averages for Galissas in January before you book your next holiday to Syros in 2025/2026.

  • 13°C maximum daytime temperature in January in Galissas13
    13°C max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in January in Galissas10
    10 days with some rainfall
  • 8°C minimum night-time temperature in January in Galissas8
    8°C min night temperature
  • 10 hours of daylight per day in January in Galissas10
    10 hours of daylight per day
  • No heat & humidity in January in Galissas0
    No heat & humidity
  • 90 mm monthly rainfall in January in Galissas90
    90 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Galissas2
    2 (Low) UV index
  • 15°C sea temperature in January in Galissas15
    15°C sea temperature

More about Galissas

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The January weather guide for Syros, represented by Galissas, (Galissas) 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 Galissas in January?

Daytime temperatures usually reach 13°C in Galissas in January, falling to 8°C at night.

How sunny is it in Galissas in January?

There are normally 4 hours of bright sunshine each day in Galissas in January - that's 43% of daylight hours.

How warm is the sea around Galissas in January?

The average sea temperature around Galissas in January is 15°C.

Does it rain in Galissas in January?

There are usually 10 days with some rain in Galissas in January and the average monthly rainfall is 90mm.

Galissas January sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 07:35 17:13
Thursday, 16th January 2025 07:33 17:27
Friday, 31st January 2025 07:24 17:44

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