Siros National (Greece) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 19° Celsius;
Maximum daytime temperature: 23° Celsius; Minimum nighttime temperature: 19° Celsius; -
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 19° Celsius;
Maximum daytime temperature: 24° Celsius; Minimum nighttime temperature: 19° Celsius;
-
Maximum daytime temperature: 26° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 26° Celsius; Minimum nighttime temperature: 17° Celsius;
-
Maximum daytime temperature: 25° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 25° Celsius; Minimum nighttime temperature: 10° Celsius;
-
Maximum daytime temperature: 28° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 28° Celsius; Minimum nighttime temperature: 10° Celsius;
-
Maximum daytime temperature: 28° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 28° Celsius; Minimum nighttime temperature: 11° Celsius;
-
Maximum daytime temperature: 29° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 29° Celsius; Minimum nighttime temperature: 17° Celsius;
Sunny.
Sunrise:
Sunset:
VH UV
No pollution data.
No pollen data.
7 day forecast for Siros National
Today (18 September 2025)
| Time |
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
20°
|
20°
|
20°
|
20°
|
19°
|
19°
|
20°
|
21°
|
21°
|
22°
|
23°
|
23°
|
23°
|
23°
|
23°
|
23°
|
22°
|
22°
|
21°
|
21°
|
21°
|
20°
|
| Feels like temperature (°C) |
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
12°
|
13°
|
14°
|
15°
|
15°
|
15°
|
16°
|
16°
|
15°
|
14°
|
14°
|
13°
|
14°
|
13°
|
12°
|
| Wind direction and speed |
NNE
30
|
NNE
30
|
NNE
30
|
NNE
31
|
NNE
31
|
NNE
32
|
NNE
32
|
NNE
32
|
NNE
31
|
NNE
31
|
NNE
30
|
NNE
30
|
NNE
31
|
NNE
31
|
NNE
31
|
NNE
31
|
NNE
31
|
NNE
30
|
NNE
30
|
NNE
28
|
NNE
29
|
NNE
30
|
| Wind gust (mph) |
43
|
43
|
43
|
44
|
45
|
45
|
45
|
45
|
44
|
43
|
43
|
44
|
44
|
44
|
44
|
43
|
43
|
43
|
41
|
40
|
41
|
42
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
54%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
55%
|
56%
|
55%
|
| UV | - | - | - | - | - | 1 | 1 | 2 | 4 | 6 | 7 | 8 | 7 | 5 | 3 | 1 | 1 | 1 | - | - | - | - |
Saturday (19 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
20°
|
20°
|
20°
|
19°
|
19°
|
19°
|
19°
|
19°
|
20°
|
20°
|
21°
|
22°
|
23°
|
23°
|
23°
|
24°
|
24°
|
23°
|
23°
|
22°
|
21°
|
21°
|
21°
|
21°
|
| Feels like temperature (°C) |
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
14°
|
15°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
15°
|
15°
|
15°
|
16°
|
15°
|
| Wind direction and speed (mph) |
NNE
30
|
NNE
30
|
NNE
30
|
NNE
30
|
NNE
30
|
NNE
30
|
NNE
30
|
NNE
31
|
NNE
31
|
NNE
31
|
NNE
31
|
NNE
30
|
NNE
30
|
NNE
30
|
NNE
29
|
NNE
28
|
NNE
28
|
NNE
27
|
NNE
27
|
N
27
|
N
26
|
N
25
|
N
24
|
NNE
24
|
| Wind gust (mph) |
43
|
43
|
42
|
42
|
42
|
43
|
43
|
43
|
44
|
44
|
43
|
42
|
42
|
41
|
40
|
39
|
38
|
37
|
37
|
36
|
35
|
34
|
33
|
33
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
55%
|
57%
|
57%
|
58%
|
60%
|
60%
|
61%
|
62%
|
63%
|
61%
|
59%
|
57%
|
56%
|
56%
|
57%
|
58%
|
58%
|
59%
|
61%
|
63%
|
65%
|
65%
|
65%
|
64%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 2 | 4 | 6 | 7 | 8 | 7 | 5 | 3 | 1 | 1 | 1 | - | - | - | - |
Sunday (20 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
21°
|
20°
|
20°
|
20°
|
20°
|
20°
|
19°
|
19°
|
20°
|
22°
|
23°
|
24°
|
25°
|
25°
|
26°
|
25°
|
25°
|
24°
|
23°
|
22°
|
20°
|
19°
|
18°
|
19°
|
| Feels like temperature (°C) |
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
14°
|
16°
|
18°
|
20°
|
21°
|
22°
|
23°
|
23°
|
23°
|
22°
|
22°
|
21°
|
19°
|
17°
|
17°
|
16°
|
17°
|
| Wind direction and speed (mph) |
NNE
23
|
NNE
23
|
NNE
22
|
NNE
22
|
NNE
22
|
N
22
|
N
22
|
N
21
|
N
21
|
N
20
|
N
19
|
N
19
|
N
19
|
N
18
|
N
17
|
N
18
|
N
17
|
N
17
|
N
16
|
N
15
|
N
15
|
N
13
|
N
12
|
N
11
|
| Wind gust (mph) |
32
|
32
|
30
|
30
|
30
|
30
|
30
|
29
|
28
|
27
|
25
|
25
|
24
|
24
|
23
|
23
|
23
|
22
|
21
|
20
|
19
|
17
|
16
|
15
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
63%
|
64%
|
64%
|
65%
|
65%
|
66%
|
66%
|
66%
|
66%
|
66%
|
66%
|
65%
|
64%
|
64%
|
64%
|
65%
|
65%
|
65%
|
65%
|
68%
|
72%
|
73%
|
73%
|
73%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 2 | 4 | 6 | 7 | 7 | 7 | 5 | 3 | 1 | 1 | 1 | - | - | - | - |
Monday (21 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
18°
|
18°
|
18°
|
18°
|
19°
|
19°
|
18°
|
18°
|
19°
|
21°
|
22°
|
24°
|
24°
|
25°
|
25°
|
25°
|
25°
|
24°
|
23°
|
20°
|
19°
|
17°
|
15°
|
13°
|
| Feels like temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
16°
|
18°
|
20°
|
21°
|
22°
|
24°
|
24°
|
24°
|
24°
|
23°
|
22°
|
19°
|
17°
|
16°
|
14°
|
12°
|
| Wind direction and speed (mph) |
N
12
|
N
13
|
N
13
|
N
14
|
N
15
|
N
16
|
N
17
|
N
17
|
N
17
|
N
18
|
N
18
|
N
18
|
N
17
|
N
15
|
N
14
|
N
13
|
N
12
|
N
11
|
N
10
|
N
10
|
N
10
|
N
9
|
N
8
|
N
7
|
| Wind gust (mph) |
16
|
18
|
19
|
20
|
22
|
23
|
23
|
23
|
24
|
25
|
24
|
24
|
23
|
21
|
18
|
18
|
16
|
15
|
13
|
14
|
14
|
13
|
11
|
10
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
73%
|
74%
|
74%
|
74%
|
75%
|
77%
|
82%
|
82%
|
82%
|
77%
|
75%
|
75%
|
75%
|
75%
|
74%
|
74%
|
74%
|
73%
|
73%
|
75%
|
75%
|
76%
|
77%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 2 | 4 | 6 | 7 | 7 | 7 | 5 | 3 | 1 | 1 | 1 | - | - | - | - |
Tuesday (22 September 2025)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
13°
|
12°
|
11°
|
11°
|
10°
|
21°
|
26°
|
28°
|
27°
|
16°
|
| Feels like temperature (°C) |
12°
|
11°
|
10°
|
10°
|
10°
|
21°
|
28°
|
29°
|
28°
|
15°
|
| Wind direction and speed (mph) |
N
6
|
N
5
|
N
4
|
NNW
3
|
NNW
4
|
N
5
|
NNW
5
|
WNW
9
|
WNW
10
|
NW
8
|
| Wind gust (mph) |
9
|
7
|
7
|
7
|
9
|
8
|
13
|
15
|
14
|
12
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
77%
|
76%
|
75%
|
75%
|
75%
|
75%
|
74%
|
75%
|
75%
|
72%
|
| UV | - | - | - | - | - | 2 | 7 | 5 | 1 | - |
Wednesday (23 September 2025)
| Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
13°
|
11°
|
10°
|
22°
|
27°
|
28°
|
26°
|
16°
|
| Feels like temperature (°C) |
12°
|
10°
|
9°
|
22°
|
28°
|
29°
|
27°
|
15°
|
| Wind direction and speed (mph) |
NNW
7
|
WNW
6
|
WNW
7
|
WNW
7
|
WNW
7
|
WNW
10
|
WNW
10
|
WNW
8
|
| Wind gust (mph) |
10
|
11
|
11
|
11
|
14
|
14
|
13
|
13
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
74%
|
74%
|
74%
|
74%
|
74%
|
75%
|
72%
|
71%
|
| UV | - | - | - | 2 | 7 | 5 | 1 | - |
Thursday (24 September 2025)
| Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
14°
|
13°
|
12°
|
23°
|
28°
|
28°
|
25°
|
20°
|
| Feels like temperature (°C) |
13°
|
11°
|
10°
|
22°
|
29°
|
29°
|
25°
|
18°
|
| Wind direction and speed (mph) |
WNW
9
|
NW
10
|
NW
9
|
NNW
9
|
NW
11
|
NW
12
|
NW
12
|
NNW
14
|
| Wind gust (mph) |
14
|
14
|
13
|
15
|
16
|
15
|
19
|
19
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
75%
|
76%
|
76%
|
76%
|
74%
|
72%
|
72%
|
| UV | - | - | - | 2 | 7 | 5 | 1 | - |
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Forecast for 02:00 (UTC+3), Fri
Updated 19:25 (UTC+1) on Thu 18 Sep 2025
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