September 2018 Weather in Helsinki — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
25
30
35
40
45
50
55
60
65
70
75
Sat, Sep 1
Lo:59
12 am
Hi:61
7
Lo:59
6 am
Hi:63
9
Lo:63
12 pm
Hi:64
8
Lo:59
6 pm
Hi:64
6
Sun, Sep 2
Lo:55
12 am
Hi:61
2
Lo:57
6 am
Hi:61
4
Lo:63
12 pm
Hi:70
4
Lo:55
6 pm
Hi:68
4
Mon, Sep 3
Lo:50
12 am
Hi:54
3
Lo:50
6 am
Hi:70
4
Lo:68
12 pm
Hi:70
9
Lo:54
6 pm
Hi:68
5
Tue, Sep 4
Lo:48
12 am
Hi:52
3
Lo:50
6 am
Hi:64
6
Lo:61
12 pm
Hi:64
9
Lo:57
6 pm
Hi:61
7
Wed, Sep 5
Lo:55
12 am
Hi:57
5
Lo:57
6 am
Hi:61
7
Lo:61
12 pm
Hi:64
6
Lo:54
6 pm
Hi:64
4
Thu, Sep 6
Lo:50
12 am
Hi:54
2
Lo:52
6 am
Hi:66
4
Lo:64
12 pm
Hi:70
6
Lo:59
6 pm
Hi:70
5
Fri, Sep 7
Lo:57
12 am
Hi:59
7
Lo:55
6 am
Hi:63
7
Lo:63
12 pm
Hi:72
7
Lo:63
6 pm
Hi:70
9
Sat, Sep 8
Lo:59
12 am
Hi:63
6
Lo:59
6 am
Hi:70
6
Lo:72
12 pm
Hi:77
8
Lo:63
6 pm
Hi:72
4
Sun, Sep 9
Lo:61
12 am
Hi:64
6
Lo:61
6 am
Hi:66
9
Lo:64
12 pm
Hi:68
11
Lo:63
6 pm
Hi:64
7
Mon, Sep 10
Lo:59
12 am
Hi:61
5
Lo:61
6 am
Hi:64
7
Lo:63
12 pm
Hi:68
13
Lo:61
6 pm
Hi:64
11
Tue, Sep 11
Lo:57
12 am
Hi:61
7
Lo:59
6 am
Hi:64
9
Lo:59
12 pm
Hi:63
11
Lo:55
6 pm
Hi:61
11
Wed, Sep 12
Lo:57
12 am
Hi:61
17
Lo:57
6 am
Hi:61
21
Lo:61
12 pm
Hi:63
24
Lo:50
6 pm
Hi:59
14
Thu, Sep 13
Lo:48
12 am
Hi:52
12
Lo:50
6 am
Hi:59
15
Lo:61
12 pm
Hi:64
16
Lo:50
6 pm
Hi:61
9
Fri, Sep 14
Lo:48
12 am
Hi:52
7
Lo:48
6 am
Hi:59
9
Lo:59
12 pm
Hi:61
16
Lo:54
6 pm
Hi:59
12
Sat, Sep 15
Lo:54
12 am
Hi:55
9
Lo:55
6 am
Hi:59
14
Lo:55
12 pm
Hi:61
18
Lo:52
6 pm
Hi:55
9
Sun, Sep 16
Lo:45
12 am
Hi:52
6
Lo:43
6 am
Hi:59
6
Lo:59
12 pm
Hi:63
12
Lo:48
6 pm
Hi:59
9
Mon, Sep 17
Lo:45
12 am
Hi:48
5
Lo:50
6 am
Hi:55
12
Lo:55
12 pm
Hi:59
14
Lo:52
6 pm
Hi:57
14
Tue, Sep 18
Lo:46
12 am
Hi:52
8
Lo:46
6 am
Hi:59
7
Lo:59
12 pm
Hi:59
14
Lo:57
6 pm
Hi:59
12
Wed, Sep 19
Lo:55
12 am
Hi:57
7
Lo:55
6 am
Hi:66
11
Lo:66
12 pm
Hi:70
17
Lo:57
6 pm
Hi:64
11
Thu, Sep 20
Lo:55
12 am
Hi:57
8
Lo:59
6 am
Hi:64
18
Lo:64
12 pm
Hi:66
25
Lo:59
6 pm
Hi:63
16
Fri, Sep 21
Lo:52
12 am
Hi:59
11
Lo:52
6 am
Hi:57
8
Lo:59
12 pm
Hi:70
15
Lo:68
6 pm
Hi:70
19
Sat, Sep 22
Lo:63
12 am
Hi:70
19
Lo:55
6 am
Hi:61
19
Lo:54
12 pm
Hi:59
25
Lo:52
6 pm
Hi:55
15
Sun, Sep 23
Lo:48
12 am
Hi:54
11
Lo:46
6 am
Hi:54
11
Lo:55
12 pm
Hi:57
14
Lo:45
6 pm
Hi:55
7
Mon, Sep 24
Lo:41
12 am
Hi:45
6
Lo:41
6 am
Hi:50
7
Lo:46
12 pm
Hi:52
11
Lo:39
6 pm
Hi:46
9
Tue, Sep 25
Lo:36
12 am
Hi:39
11
Lo:36
6 am
Hi:46
14
Lo:46
12 pm
Hi:52
17
Lo:43
6 pm
Hi:52
11
Wed, Sep 26
Lo:41
12 am
Hi:48
9
Lo:48
6 am
Hi:52
21
Lo:50
12 pm
Hi:52
21
Lo:48
6 pm
Hi:52
14
Thu, Sep 27
Lo:46
12 am
Hi:48
21
Lo:46
6 am
Hi:50
22
Lo:50
12 pm
Hi:52
24
Lo:45
6 pm
Hi:50
7
Fri, Sep 28
Lo:41
12 am
Hi:43
4
Lo:41
6 am
Hi:46
8
Lo:48
12 pm
Hi:52
12
Lo:37
6 pm
Hi:46
8
Sat, Sep 29
Lo:28
12 am
Hi:37
5
Lo:27
6 am
Hi:45
4
Lo:46
12 pm
Hi:50
12
Lo:45
6 pm
Hi:46
12
Sun, Sep 30
Lo:45
12 am
Hi:48
13
Lo:46
6 am
Hi:52
11
Lo:52
12 pm
Hi:52
16
Lo:46
6 pm
Hi:52
11
Saturday, September 1, 2018, 12:00 am — 6:00 am
61 / 59 °F
Fog.
Humidity: 94%
Barometer: 30.15 "Hg
ENE
Wind: 6.836 mph
High & Low Weather Summary for September 2018
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 77 °F (Sep 8, 3:20 pm) | 100% (Sep 1, 4:50 am) | 30.36 "Hg (Sep 1, 4:50 am) |
| Low | 27 °F (Sep 29, 6:50 am) | 40% (Sep 28, 4:50 pm) | 29.33 "Hg (Sep 26, 4:50 pm) |
| Average | 56 °F | 82% | 29.87 "Hg |
| * Reported Sep 1 12:20 am — Sep 30 11:50 pm, Helsinki. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Helsinki Weather History for September 1, 2018
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 12:20 am Sat, Sep 1 |  | 61 °F | Partly cloudy. | 2 mph | ↑ | 88% | 30.15 "Hg | N/A |
| 12:50 am |  | 59 °F | Passing clouds. | 6 mph | ↑ | 88% | 30.15 "Hg | N/A |
| 1:20 am |  | 59 °F | Clear. | 6 mph | ↑ | 94% | 30.15 "Hg | 10 mi |
| 1:50 am | | 59 °F | Clear. | 6 mph | ↑ | 94% | 30.15 "Hg | 10 mi |
| 2:20 am | | 59 °F | Clear. | 7 mph | ↑ | 94% | 30.15 "Hg | 10 mi |
| 2:50 am | | 59 °F | Clear. | 8 mph | ↑ | 94% | 30.15 "Hg | 10 mi |
| 3:20 am | | 59 °F | Passing clouds. | 8 mph | ↑ | 94% | 30.15 "Hg | N/A |
| 3:50 am | | 59 °F | Partly cloudy. | 9 mph | ↑ | 94% | 30.15 "Hg | N/A |
| 4:20 am | | 59 °F | Passing clouds. | 10 mph | ↑ | 94% | 30.15 "Hg | 4 mi |
| 4:50 am | | 59 °F | Fog. | 8 mph | ↑ | 100% | 30.15 "Hg | 1 mi |
| 5:20 am | | 59 °F | Fog. | 8 mph | ↑ | 100% | 30.15 "Hg | 1 mi |
| 5:50 am | | 59 °F | Fog. | 7 mph | ↑ | 100% | 30.15 "Hg | 1 mi |
| 6:20 am |  | 59 °F | Fog. | 8 mph | ↑ | 100% | 30.15 "Hg | 2 mi |
| 6:50 am | | 59 °F | Fog. | 9 mph | ↑ | 100% | 30.15 "Hg | 2 mi |
| 7:20 am |  | 61 °F | Partly sunny. | 8 mph | ↑ | 94% | 30.15 "Hg | 3 mi |
| 7:50 am | | 61 °F | Partly sunny. | 8 mph | ↑ | 94% | 30.15 "Hg | 4 mi |
| 8:20 am |  | 61 °F | Sprinkles. Broken clouds. | 12 mph | ↑ | 94% | 30.15 "Hg | 4 mi |
| 8:50 am | | 61 °F | Sprinkles. Broken clouds. | 10 mph | ↑ | 94% | 30.15 "Hg | 5 mi |
| 9:20 am | | 61 °F | Broken clouds. | 8 mph | ↑ | 100% | 30.15 "Hg | 6 mi |
| 9:50 am | | 61 °F | Sprinkles. Broken clouds. | 8 mph | ↑ | 100% | 30.15 "Hg | 4 mi |
| 10:20 am |  | 61 °F | Rain showers. Broken clouds. | 8 mph | ↑ | 100% | 30.15 "Hg | 4 mi |
| 10:50 am | | 61 °F | Rain showers. Broken clouds. | 9 mph | ↑ | 100% | 30.15 "Hg | 4 mi |
| 11:20 am | | 63 °F | Broken clouds. | 10 mph | ↑ | 94% | 30.15 "Hg | N/A |
| 11:50 am | | 63 °F | Sprinkles. Broken clouds. | 12 mph | ↑ | 94% | 30.15 "Hg | N/A |
| 12:20 pm | | 63 °F | Broken clouds. | 9 mph | ↑ | 94% | 30.15 "Hg | N/A |
| 12:50 pm | | 64 °F | Broken clouds. | 8 mph | ↑ | 88% | 30.15 "Hg | N/A |
| 1:20 pm | | 64 °F | Partly sunny. | 8 mph | ↑ | 88% | 30.18 "Hg | N/A |
| 1:50 pm | | 64 °F | Sprinkles. Broken clouds. | 9 mph | ↑ | 88% | 30.18 "Hg | N/A |
| 2:20 pm | | 64 °F | Scattered showers. Partly sunny. | 8 mph | ↑ | 88% | 30.18 "Hg | N/A |
| 2:50 pm | | 64 °F | Partly sunny. | 9 mph | ↑ | 88% | 30.18 "Hg | N/A |
| 3:20 pm | | 64 °F | Partly sunny. | 7 mph | ↑ | 88% | 30.18 "Hg | N/A |
| 3:50 pm | | 64 °F | Partly sunny. | 10 mph | ↑ | 83% | 30.18 "Hg | N/A |
| 4:20 pm | | 64 °F | Broken clouds. | 7 mph | ↑ | 83% | 30.18 "Hg | N/A |
| 4:50 pm | | 64 °F | Partly sunny. | 6 mph | ↑ | 83% | 30.18 "Hg | N/A |
| 5:20 pm | | 64 °F | Partly sunny. | 6 mph | ↑ | 83% | 30.18 "Hg | N/A |
| 5:50 pm | | 64 °F | Partly sunny. | 7 mph | ↑ | 83% | 30.18 "Hg | N/A |
| 6:20 pm | | 64 °F | Partly sunny. | 7 mph | ↑ | 83% | 30.18 "Hg | N/A |
| 6:50 pm | | 64 °F | Partly sunny. | 7 mph | ↑ | 88% | 30.18 "Hg | N/A |
| 7:20 pm | | 64 °F | Scattered showers. Broken clouds. | 8 mph | ↑ | 88% | 30.21 "Hg | N/A |
| 7:50 pm | | 64 °F | Scattered showers. Broken clouds. | 7 mph | ↑ | 88% | 30.21 "Hg | N/A |
| 8:20 pm | | 63 °F | Scattered showers. Partly sunny. | 7 mph | ↑ | 94% | 30.21 "Hg | N/A |
| 8:50 pm |  | 63 °F | Scattered showers. Passing clouds. | 3 mph | ↑ | 88% | 30.21 "Hg | N/A |
| 9:20 pm | | 63 °F | Passing clouds. | 6 mph | ↑ | 88% | 30.21 "Hg | N/A |
| 9:50 pm | | 61 °F | Clear. | 5 mph | ↑ | 94% | 30.21 "Hg | 10 mi |
| 10:20 pm | | 59 °F | Clear. | 6 mph | ↑ | 100% | 30.21 "Hg | 10 mi |
| 10:50 pm | | 59 °F | Passing clouds. | 3 mph | ↑ | 100% | 30.21 "Hg | 6 mi |
| 11:20 pm | | 59 °F | Partly cloudy. | 5 mph | ↑ | 100% | 30.21 "Hg | 5 mi |
| 11:50 pm | | 61 °F | Clear. | 3 mph | ↑ | 94% | 30.21 "Hg | 5 mi |
| Weather by CustomWeather, © 2025 | ||||||||