Galissas weather live forecast

Today's maximum temperature in Galissas is expected to be 32°C. Select a day from the live weather forecast for Galissas, Syros, Greece for more weather parameters.

Tuesday
28th Jul
32

25

14

9
Wednesday
29th Jul
31

26

13

10
Thursday
30th Jul
30

25

14

10
Friday
31st Jul
29

25

13

9
Saturday
1st Aug
28

25

13

9

5-day weather forecast updated at 04:02 on Sunday 26th July 2026 GMT

More about Galissas

Galissas by month

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

Recommended for Syros

Intrepid Travel discount code: £200 off small group tours

Discount Code

Save EXTRA £200 on select small group tours worldwide
Min spend of £1,500 per person. T&Cs apply
Travel before 30th June 2027 (inclusive)

Show discount code

******011

Redeem Intrepid Travel discount code >>

Expires at 23:59 on Friday 31st Jul 2026 · View all Intrepid Travel offers

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 Tuesday 28th July 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the north.

32
°C maximum temperature
25
°C minimum temperature
clear skies
14
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
24
kph wind from N

Galissas weather for Wednesday 29th July 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 35 kph from the north.

31
°C maximum temperature
26
°C minimum temperature
clear skies
13
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
35
kph wind from N

Galissas weather for Thursday 30th July 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 42 kph from the north.

30
°C maximum temperature
25
°C minimum temperature
clear skies
14
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
42
kph wind from N

Galissas weather for Friday 31st July 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a strong breeze of 42 kph from the north.

29
°C maximum temperature
25
°C minimum temperature
clear skies
13
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
42
kph wind from N

Galissas weather for Saturday 1st August 2026

Expect clear skies in Galissas, Syros with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 36 kph from the north.