Galissas weather live forecast

Today's maximum temperature in Galissas is expected to be 31°C. Select a day from the live weather forecast for Galissas, Syros, Greece for more weather parameters.

Thursday
27th Aug
31

27

13

8
Friday
28th Aug
31

26

13

8
Saturday
29th Aug
28

24

12

8
Sunday
30th Aug
29

25

13

7
Monday
31st Aug
30

25

13

7

5-day weather forecast updated at 04:02 on Thursday 27th August 2026 GMT

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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 27th August 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the north.

31
°C maximum temperature
27
°C minimum temperature
clear skies
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
26
kph wind from N

Galissas weather for Friday 28th August 2026

31
°C maximum temperature
26
°C minimum temperature
clear skies
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
23
kph wind from N

Galissas weather for Saturday 29th August 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 38 kph from the north.

28
°C maximum temperature
24
°C minimum temperature
clear skies
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
38
kph wind from N

Galissas weather for Sunday 30th August 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 27 kph from the north.

29
°C maximum temperature
25
°C minimum temperature
clear skies
13
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
27
kph wind from N

Galissas weather for Monday 31st August 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.