Galissas weather live forecast

Today's maximum temperature in Galissas is expected to be 19°C. Select a day from the live weather forecast for Galissas, Syros, Greece for more weather parameters.

Monday
26th Oct
19

17

1

2
Tuesday
27th Oct
19

16

1

2
Wednesday
28th Oct
18

15

0

2
Thursday
29th Oct
19

16

4

3
Friday
30th Oct
20

17

6

3

5-day weather forecast updated at 04:01 on Monday 26th October 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 Monday 26th October 2026

Expect isolated thunderstorms in Galissas, Syros with a maximum temperature of 19°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 61% chance of some rain and a gentle breeze of 15 kph from the south-east.

19
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
2
UV index (Low)
61
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
15
kph wind from SE

Galissas weather for Tuesday 27th October 2026

Expect isolated thunderstorms in Galissas, Syros with a maximum temperature of 19°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 57% chance of some rain and a moderate breeze of 25 kph from the north.

19
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
2
UV index (Low)
57
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
25
kph wind from N

Galissas weather for Wednesday 28th October 2026

Expect isolated thunderstorms in Galissas, Syros with a maximum temperature of 18°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 85% chance of some rain and a moderate breeze of 23 kph from the north.

18
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
2
UV index (Low)
85
% chance of some rain
<30
mm of rainfall expected
18
°C wind chill
23
kph wind from N

Galissas weather for Thursday 29th October 2026

Expect isolated thunderstorms in Galissas, Syros with a maximum temperature of 19°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 53% chance of some rain and a fresh breeze of 30 kph from the north.

19
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
3
UV index (Moderate)
53
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
30
kph wind from N

Galissas weather for Friday 30th October 2026

Expect broken clouds in Galissas, Syros with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the north.