September 2017 Weather History in Helsinki Finland

The data for this report comes from the Helsinki-Vantaa Airport. See all nearby weather stations

This report shows the past weather for Helsinki, providing a weather history for September 2017. It features all historical weather data series we have available, including the Helsinki temperature history for September 2017. You can drill down from year to month and even day level reports by clicking on the graphs.

Helsinki Temperature History September 2017

Temperature history in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303025°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FAugOct
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in September 2017 in Helsinki

Hourly Temperature in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOctcoldcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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Cloud Cover in September 2017 in Helsinki

Cloud Cover in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.

Observed Weather in September 2017 in Helsinki

Observed Weather in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.
DayObservationsPrecipitationCodes
Fri, Sep 1 Light Rain, Light Drizzle, Mist, Showers in the Vicinity-RA, -DZ, BR, VCSH
Sat, Sep 2 Light Rain-RA
Sun, Sep 3 Light Rain, Showers in the Vicinity-RA, VCSH
Thu, Sep 7 Light Rain-RA
Fri, Sep 8 Light Rain, Showers of Light Rain-RA, -SHRA
Sat, Sep 9 Rain, Rain and Drizzle, Recent Rain, Light Rain, Light Rain and Drizzle, Light Drizzle, MistRA, RADZ, RERA, -RA, -RADZ, -DZ, BR
Sun, Sep 10 Rain, Recent Rain, Light RainRA, RERA, -RA
Mon, Sep 11 Light Rain, Showers of Light Rain, Showers in the Vicinity-RA, -SHRA, VCSH
Tue, Sep 12 Heavy Rain, Rain, Light Rain, Light Rain and Drizzle, Light Drizzle, Mist+RA, RA, -RA, -RADZ, -DZ, BR
Wed, Sep 13 Fog, Mist, Patches of FogFG, BR, BCFG
Thu, Sep 14 Light Rain, Light Rain and Drizzle, Showers of Light Rain, Showers in the Vicinity-RA, -RADZ, -SHRA, VCSH
Fri, Sep 15 Light Rain, Showers of Light Rain-RA, -SHRA
Sat, Sep 16 Showers of Light Rain, Shallow Fog, Showers in the Vicinity-SHRA, MIFG, VCSH
Sun, Sep 17 Patches of Fog, Shallow FogBCFG, MIFG
Mon, Sep 18 Shallow FogMIFG
Tue, Sep 19 Rain and Drizzle, Light Rain and Drizzle, Light Drizzle, Showers in the VicinityRADZ, -RADZ, -DZ, VCSH
Wed, Sep 20 Light Drizzle and Rain, Light Rain, Showers of Light Rain, Light Drizzle, Shallow Fog, Showers in the Vicinity-DZRA, -RA, -SHRA, -DZ, MIFG, VCSH
Thu, Sep 21 Fog, MistFG, BR
Fri, Sep 22 Thunderstorm with Light Rain, Light Rain, Showers of Light Rain-TSRA, -RA, -SHRA
Sun, Sep 24 Shallow FogMIFG
Mon, Sep 25 Fog, Mist, Shallow FogFG, BR, MIFG
Tue, Sep 26 Fog, Mist, Patches of Fog, Shallow FogFG, BR, BCFG, MIFG
Wed, Sep 27 MistBR
Thu, Sep 28 Shallow FogMIFG
Fri, Sep 29 Fog, Mist, Patches of Fog, Shallow FogFG, BR, BCFG, MIFG
Sat, Sep 30 Light Drizzle-DZ

Hours of Daylight and Twilight in September 2017 in Helsinki

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

Sunrise & Sunset with Twilight in September 2017 in Helsinki

The solar day over the course of September 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Solar Elevation and Azimuth in September 2017 in Helsinki

Solar Elevation and Azimuth in September 2017 in HelsinkiSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMAugOct00101020203000101020203030
northeastsouthwest
Solar elevation and azimuth over the course of September 2017. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

Moon Rise, Set & Phases in September 2017 in Helsinki

Moon Rise, Set & Phases in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctSep 610:04 AMSep 610:04 AMSep 208:31 AMSep 208:31 AMOct 59:41 PMOct 59:41 PM8:07 PM8:07 PM6:12 AM6:12 AM6:47 AM6:47 AM7:51 PM7:51 PM7:02 PM7:02 PM7:59 AM7:59 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Sep 2017IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
81%-12:35 AMSW6:11 PMSE9:49 PMS249,264 mi
2
88%-1:27 AMSW6:50 PMSE10:39 PMS247,320 mi
3
94%-2:28 AMSW7:22 PMSE11:29 PMS244,953 mi
4
96%-3:38 AMWSW7:46 PMESE--
5
98%-4:53 AMWSW8:07 PMESE12:19 AMS242,364 mi
6
100%-6:12 AMWSW8:25 PMESE1:08 AMS239,750 mi
7
99%-7:34 AMW8:41 PME1:57 AMS237,288 mi
8
97%-8:57 AMW8:57 PME2:46 AMS235,110 mi
9
91%-10:22 AMW9:15 PMENE3:35 AMS233,297 mi
10
84%-11:47 AMWNW9:34 PMENE4:26 AMS231,880 mi
11
74%-1:13 PMWNW9:59 PMENE5:18 AMS230,851 mi
12
63%-2:36 PMNW10:31 PMNE6:11 AMS230,185 mi
13
50%-3:51 PMNW11:14 PMNE7:07 AMS229,858 mi
14
39%-4:56 PMNW-8:04 AMS229,866 mi
15
28%12:10 AMNE5:47 PMNW-9:01 AMS230,227 mi
16
18%1:19 AMNE6:25 PMNW-9:57 AMS230,980 mi
17
10%2:37 AMENE6:54 PMWNW-10:52 AMS232,167 mi
18
4%4:00 AMENE7:16 PMWNW-11:44 AMS233,809 mi
19
1%5:24 AMENE7:35 PMWNW-12:34 PMS235,887 mi
20
0%6:47 AME7:51 PMW-1:22 PMS238,326 mi
21
2%8:08 AME8:06 PMW-2:09 PMS240,996 mi
22
6%9:26 AME8:21 PMWSW-2:56 PMS243,717 mi
23
11%10:43 AMESE8:38 PMWSW-3:42 PMS246,286 mi
24
19%11:57 AMESE8:57 PMWSW-4:28 PMS248,491 mi
25
27%1:08 PMESE9:21 PMSW-5:15 PMS250,140 mi
26
36%2:15 PMSE9:50 PMSW-6:03 PMS251,076 mi
27
46%3:14 PMSE10:28 PMSW-6:51 PMS251,192 mi
28
50%4:06 PMSE11:15 PMSW-7:40 PMS250,449 mi
29
65%4:48 PMSE--8:30 PMS248,877 mi
30
74%-12:12 AMSW5:22 PMSE9:20 PMS246,581 mi

Humidity Comfort Levels in September 2017 in Helsinki

Humidity Comfort Levels in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in September 2017 in Helsinki

Wind Speed in September 2017 in Helsinki181522291122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mph30 mph30 mph35 mph35 mph40 mph40 mphAugOct
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in September 2017 in Helsinki

Hourly Wind Speed in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 2017 in Helsinki

Hourly Wind Direction in 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMAugOct
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in September 2017 in Helsinki

Atmospheric Pressure in September 2017 in Helsinki1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303029.0 inHg29.0 inHg29.5 inHg29.5 inHg30.0 inHg30.0 inHg30.5 inHg30.5 inHg31.0 inHg31.0 inHgAugOct
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

The details of the data sources used for this report can be found on the Helsinki-Vantaa Airport page.

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