Galissas weather live forecast

Today's maximum temperature in Galissas is expected to be 25°C. Select a day from the live weather forecast for Galissas, Syros, Greece for more weather parameters.

Thursday
17th Sep
25

22

10

7
Friday
18th Sep
27

22

12

7
Saturday
19th Sep
27

23

12

7
Sunday
20th Sep
27

23

10

6
Monday
21st Sep
27

23

12

6

5-day weather forecast updated at 04:02 on Wednesday 16th September 2026 GMT

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Recommended for Syros

The 5-day weather forecast for Syros, represented by Galissas, (Galissas) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Galissas weather forecast by day

Below are the detailed weather forecasts for Galissas for the next 5 days.

Galissas weather for Thursday 17th September 2026

Expect scattered clouds in Galissas, Syros with a maximum temperature of 25°C, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 33 kph from the north.

25
°C maximum temperature
22
°C minimum temperature
scattered clouds
10
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
33
kph wind from N

Galissas weather for Friday 18th September 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the north.

27
°C maximum temperature
22
°C minimum temperature
clear skies
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
24
kph wind from N

Galissas weather for Saturday 19th September 2026

27
°C maximum temperature
23
°C minimum temperature
clear skies
12
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
23
kph wind from N

Galissas weather for Sunday 20th September 2026

Expect scattered clouds in Galissas, Syros with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the north.

27
°C maximum temperature
23
°C minimum temperature
scattered clouds
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
26
kph wind from N

Galissas weather for Monday 21st September 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the north.