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Polyarnyye Zori · September 2027

Northern lights in Polyarnyye Zori in September 2027

Answer

September gives Polyarnyye Zori 8.8 hours of civil night on the 15th, the 7th darkest of its 12 months, under 80% mean cloud. 83% of September days since 1996 reached Kp 2, enough for the oval edge to reach Polyarnyye Zori.
8.8 h
civil night, average night
SunCalc for 67.37, 32.50; NASA POWER; GFZ Kp

September against the rest of the year

September cloud at Polyarnyye Zori averages 80% in NASA POWER's 2001 to 2020 record, 2 points cloudier than its yearly mean. July is Polyarnyye Zori's clearest month at 73%. By civil night times clear sky, September scores 1.8 hours at Polyarnyye Zori, 7th of 12. Kandalaksha, 24 km away, averages the same 80%.

Civil night at Polyarnyye Zori starts September at 6 h 43 min and reaches 10 h 42 min by September 30 as the nights lengthen by 4.0 hours. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 2.6 hours on the 15th.

September night by night

Full moon comes first, on Sep 16, then the new moon on Sep 30, in Europe/Moscow dates. Polyarnyye Zori gets 133 hours of civil night with the moon below the horizon across the month. The best of them for moon-free darkness inside 10 PM to 2 AM: Sep 1 (4 h), Sep 2 (4 h), Sep 3 (4 h).

  1. 1

    2% lit

    6.7 h

  2. 2

    7% lit

    6.9 h

  3. 3

    13% lit

    7.0 h

  4. 4

    22% lit

    7.2 h

  5. 5

    31% lit

    7.3 h

  6. 6

    41% lit

    7.5 h

  7. 7

    51% lit

    7.6 h

  8. 8

    61% lit

    7.8 h

  9. 9

    70% lit

    7.9 h

  10. 10

    78% lit

    8.1 h

  11. 11

    85% lit

    5.2 h

  12. 12

    91% lit

    3.1 h

  13. 13

    96% lit

    1.4 h

  14. 14

    99% lit

    0.0 h

  15. 15

    100% lit

    0.0 h

  16. 16

    99% lit

    0.0 h

  17. 17

    96% lit

    0.0 h

  18. 18

    91% lit

    0.0 h

  19. 19

    85% lit

    0.0 h

  20. 20

    77% lit

    0.0 h

  21. 21

    67% lit

    0.0 h

  22. 22

    56% lit

    0.0 h

  23. 23

    45% lit

    0.0 h

  24. 24

    34% lit

    0.0 h

  25. 25

    23% lit

    3.5 h

  26. 26

    14% lit

    6.0 h

  27. 27

    7% lit

    8.3 h

  28. 28

    2% lit

    10.4 h

  29. 29

    0% lit

    10.6 h

  30. 30

    1% lit

    10.7 h

Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.

Activity in past Septembers

Polyarnyye Zori needs Kp 2 for the average oval edge to sit overhead. 745 of the 900 September days from 1996 to 2025 (83%) reached it in the GFZ Potsdam record, one of the three most active months for that level; storm days with Kp 5 or more made up 14%. Polyarnyye Zori sits at 63.5 degrees geomagnetic, inside SWPC's 60 to 75 degree band, where aurora can be seen on more than half of all nights. No storm is needed: by SWPC's rule the average oval edge is overhead at Kp 2.

September across Russia

Polyarnyye Zori ranks 12th in Russia for civil night on September 15, behind Velikiy Novgorod at 9.7 hours. Coming from August (3.6 hours at Polyarnyye Zori), September adds darkness, and the nights keep growing into October (12.6 hours on the 15th). The September equinox falls on September 23, 08:56 Polyarnyye Zori time, inside the weeks SWPC links with larger storms.

Civil night on September 15 and September cloud, month-page towns in Russia
TownCivil nightCloud
Velikiy Novgorod9.7 h68%
Saint Petersburg9.6 h70%
Kolpino9.6 h70%
Syktyvkar9.5 h76%
Petrozavodsk9.4 h74%
Noyabrsk9.3 h77%
Ukhta9.3 h78%
Arkhangel'sk9.2 h76%
Severodvinsk9.2 h76%
Kostomuksha9.2 h74%
Anadyr9.1 h69%
Polyarnyye Zori8.8 h80%

Darkness and moon, every night

Polyarnyye Zori, September 2027: each night from local noon to the next noon
NightCivilAstronomicalMoon-free darkMoon-free, 10 PM to 2 AMMoon lit
Wed Sep 16 h 43 min0 min6 h 43 min4 h2%
Thu Sep 26 h 52 min0 min6 h 52 min4 h7%
Fri Sep 37 h 1 min0 min7 h 1 min4 h13%
Sat Sep 47 h 10 min0 min7 h 10 min4 h22%
Sun Sep 57 h 19 min0 min7 h 19 min4 h31%
Mon Sep 67 h 28 min0 min7 h 28 min4 h41%
Tue Sep 77 h 37 min0 min7 h 37 min4 h51%
Wed Sep 87 h 46 min0 min7 h 46 min4 h61%
Thu Sep 97 h 55 min0 min7 h 55 min4 h70%
Fri Sep 108 h 3 min0 min8 h 3 min4 h78%
Sat Sep 118 h 12 min0 min5 h 12 min2 h 18 min85%
Sun Sep 128 h 20 min53 min3 h 8 min12 min91%
Mon Sep 138 h 28 min1 h 39 min1 h 24 min0 min96%
Tue Sep 148 h 37 min2 h 9 min0 min0 min99%
Wed Sep 158 h 45 min2 h 34 min0 min0 min100%
Thu Sep 168 h 53 min2 h 55 min0 min0 min99%
Fri Sep 179 h 1 min3 h 15 min0 min0 min96%
Sat Sep 189 h 9 min3 h 32 min0 min0 min91%
Sun Sep 199 h 17 min3 h 48 min0 min0 min85%
Mon Sep 209 h 25 min4 h 4 min0 min0 min77%
Tue Sep 219 h 33 min4 h 18 min0 min0 min67%
Wed Sep 229 h 41 min4 h 32 min0 min0 min56%
Thu Sep 239 h 48 min4 h 45 min0 min0 min45%
Fri Sep 249 h 56 min4 h 57 min0 min0 min34%
Sat Sep 2510 h 4 min5 h 9 min3 h 33 min1 h 14 min23%
Sun Sep 2610 h 12 min5 h 21 min6 h 3 min3 h 40 min14%
Mon Sep 2710 h 19 min5 h 32 min8 h 17 min4 h7%
Tue Sep 2810 h 27 min5 h 43 min10 h 24 min4 h2%
Wed Sep 2910 h 34 min5 h 54 min10 h 34 min4 h0%
Thu Sep 3010 h 42 min6 h 4 min10 h 42 min4 h1%
Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Polyarnyye Zori in September?
On dark, clear nights with enough activity. 30 of 30 nights at Polyarnyye Zori have civil darkness, and 83% of past September days reached Kp 2.
How dark is Polyarnyye Zori in September?
Polyarnyye Zori averages 8.8 hours of civil night a night in September 2027, from 6 h 43 min on the 1st to 10 h 42 min on the last night.
How cloudy is Polyarnyye Zori in September?
NASA POWER's 2001 to 2020 climatology gives Polyarnyye Zori's 1 degree cell 80% mean cloud in September, against 78% for the whole year. It is an all-hours average, not a forecast.
What is the best night in September 2027 for aurora in Polyarnyye Zori?
By darkness and moon alone, Sep 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Polyarnyye Zori. Activity on that date will only be known hours ahead.
Is September or October better in Polyarnyye Zori?
By civil night times the clear share, September scores 1.8 hours at Polyarnyye Zori and October 1.9. October comes out ahead.

Sources and verification

Quoted figures last checked against their sources on 2026-09-30; next review 2026-12-31. Computed figures come from SunCalc and the IGRF-14 dipole as described in the methodology. Every quote is listed in the sources ledger.