Galissas weather in December 2024

Q: How warm is it in Galissas in December?

Daytime temperatures usually reach 15°C in Galissas in December, falling to 10°C at night.

Q: How sunny is it in Galissas in December?

There are normally 4 hours of bright sunshine each day in Galissas in December - that's 45% of daylight hours.

Q: How warm is the sea around Galissas in December?

The average sea temperature around Galissas in December is 16°C.

Q: Does it rain in Galissas in December?

There are usually 11 days with some rain in Galissas in December and the average monthly rainfall is 91mm.

Expect 15°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Galissas in December. Check more long-term weather averages for Galissas in December before you book your next holiday to Syros in 2024/2025.

15
15°C max day temperature
4
4 hours of sunshine per day
11
11 days with some rainfall
10
10°C min night temperature
10
10 hours of daylight per day
0
No heat & humidity
91
91 mm of monthly rainfall
2
2 (Low) UV index
16
16°C sea temperature

More about Galissas

Galissas by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Syros

TUI: up to 7% off holidays booked online

Sale

Book online with TUI & save up to 7% on holidays
FREE child places available for select holidays
Pay £0 deposits with direct debit & spread the cost

Go to TUI deal >>

View all TUI offers

TUI deal finder

Destination

The December 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)