Can you see the northern lights in Sestroretsk in June?

On dark, clear nights with enough activity. 25 of 30 nights at Sestroretsk have civil darkness, and 8% of past June days reached Kp 5.

How dark is Sestroretsk in June?

Sestroretsk averages 1.0 hours of civil night a night in June 2027, from 2 h 24 min on the 1st to 1 h 7 min on the last night.

How cloudy is Sestroretsk in June?

NASA POWER's 2001 to 2020 climatology gives Sestroretsk's 1 degree cell 66% mean cloud in June, against 74% for the whole year. It is an all-hours average, not a forecast.

What is the best night in June 2027 for aurora in Sestroretsk?

By darkness and moon alone, Jun 1, with 2 h 14 min of moon-free darkness inside 10 PM to 2 AM at Sestroretsk. Activity on that date will only be known hours ahead.

Is June or July better in Sestroretsk?

By civil night times the clear share, June scores 0.2 hours at Sestroretsk and July 1.0. July comes out ahead.

Sestroretsk · June 2027

Northern lights in Sestroretsk in June 2027

Answer

June gives Sestroretsk 0.6 hours of civil night on the 15th, the lightest month of its year, under 66% mean cloud. 8% of June days since 1996 reached Kp 5, enough for the oval edge to reach Sestroretsk.

1.0 h

civil night, average night

SunCalc for 60.10, 29.96; NASA POWER; GFZ Kp

June against the rest of the year

2.9

2.6

3.1

2.4

1.7

0.2

1.0

2.3

3.0

2.3

1.9

2.2

June cloud at Sestroretsk averages 66% in NASA POWER's 2001 to 2020 record, 8 points clearer than its yearly mean. May is Sestroretsk's clearest month at 62%. By civil night times clear sky, June scores 0.2 hours at Sestroretsk, 12th of 12. Saint Petersburg, 26 km away, averages 67%, cloudier by 1 points.

Civil night at Sestroretsk starts June at 2 h 24 min and reaches 1 h 7 min by June 30, 1.3 hours shorter. 5 Sestroretsk nights this month have no civil darkness at all. No night keeps the 10 PM to 2 AM window fully dark at Sestroretsk. The sun never reaches 18 degrees down, so Sestroretsk gets no astronomical night in June.

June night by night

June opens toward a new moon on Jun 4, with full moon on Jun 19, in Europe/Moscow dates. Sestroretsk gets 17 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: Jun 1 (2 h 14 min), Jun 2 (2 h 10 min), Jun 3 (2 h 6 min).

1
11% lit
2.4 h
2
5% lit
2.3 h
3
1% lit
2.1 h
4
0% lit
2.0 h
New
5
2% lit
1.9 h
6
6% lit
1.3 h
7
13% lit
1.0 h
8
22% lit
0.8 h
9
33% lit
0.7 h
10
44% lit
0.6 h
11
55% lit
0.5 h
12
65% lit
0.4 h
13
75% lit
0.3 h
14
84% lit
0.2 h
15
90% lit
0.1 h
16
95% lit
0.0 h
17
99% lit
0.0 h
18
100% lit
0.0 h
19
99% lit
no night
Full
20
97% lit
no night
21
93% lit
no night
22
87% lit
no night
23
80% lit
no night
24
72% lit
0.0 h
25
63% lit
0.0 h
26
53% lit
0.0 h
27
43% lit
0.0 h
28
33% lit
0.0 h
29
23% lit
0.0 h
30
15% lit
0.1 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 Junes

Sestroretsk needs Kp 5 for the average oval edge to sit overhead. 73 of the 900 June days from 1996 to 2025 (8%) reached it in the GFZ Potsdam record, 9th of 12 months; storm days with Kp 5 or more made up 8%. Sestroretsk sits at 56.9 degrees geomagnetic. By SWPC's rule the average oval edge is overhead at Kp 5, and aurora is usually visible on the northern horizon at G1 (Kp 5) or less.

June across Russia

Sestroretsk ranks 4th in Russia for civil night on June 15, behind Velikiy Novgorod at 2.7 hours. Coming from May (4.4 hours at Sestroretsk), June loses darkness, and the nights keep growing into July (3.0 hours on the 15th). The June solstice falls on June 21, 17:07 Sestroretsk time.

Civil night on June 15 and June cloud, month-page towns in Russia
Town	Civil night	Cloud
Velikiy Novgorod	2.7 h	66%
Kolpino	1.4 h	67%
Saint Petersburg	1.0 h	67%
Sestroretsk	0.6 h	66%
Arkhangel'sk	0.0 h	67%
Murmansk	0.0 h	79%
Petrozavodsk	0.0 h	73%
Syktyvkar	0.0 h	70%
Severodvinsk	0.0 h	67%
Norilsk	0.0 h	74%
Noyabrsk	0.0 h	69%
Ukhta	0.0 h	69%

Darkness and moon, every night

Sestroretsk, June 2027: each night from local noon to the next noon
Night	Civil	Moon-free dark	Moon-free, 10 PM to 2 AM	Moon lit
Tue Jun 1	2 h 24 min	2 h 24 min	2 h 14 min	11%
Wed Jun 2	2 h 16 min	2 h 16 min	2 h 10 min	5%
Thu Jun 3	2 h 9 min	2 h 9 min	2 h 6 min	1%
Fri Jun 4	2 h 2 min	2 h 2 min	2 h 2 min	0%
Sat Jun 5	1 h 54 min	1 h 54 min	1 h 54 min	2%
Sun Jun 6	1 h 47 min	1 h 18 min	1 h 18 min	6%
Mon Jun 7	1 h 39 min	59 min	59 min	13%
Tue Jun 8	1 h 32 min	48 min	48 min	22%
Wed Jun 9	1 h 24 min	40 min	40 min	33%
Thu Jun 10	1 h 17 min	35 min	35 min	44%
Fri Jun 11	1 h 9 min	30 min	30 min	55%
Sat Jun 12	1 h 2 min	25 min	25 min	65%
Sun Jun 13	54 min	19 min	19 min	75%
Mon Jun 14	46 min	13 min	13 min	84%
Tue Jun 15	38 min	3 min	3 min	90%
Wed Jun 16	30 min	0 min	0 min	95%
Thu Jun 17	20 min	0 min	0 min	99%
Fri Jun 18	8 min	0 min	0 min	100%
Sat Jun 19	0 min	0 min	0 min	99%
Sun Jun 20	0 min	0 min	0 min	97%
Mon Jun 21	0 min	0 min	0 min	93%
Tue Jun 22	0 min	0 min	0 min	87%
Wed Jun 23	0 min	0 min	0 min	80%
Thu Jun 24	17 min	0 min	0 min	72%
Fri Jun 25	27 min	0 min	0 min	63%
Sat Jun 26	35 min	0 min	0 min	53%
Sun Jun 27	43 min	0 min	0 min	43%
Mon Jun 28	51 min	0 min	0 min	33%
Tue Jun 29	59 min	0 min	0 min	23%
Wed Jun 30	1 h 7 min	4 min	4 min	15%

Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Sestroretsk in June?: On dark, clear nights with enough activity. 25 of 30 nights at Sestroretsk have civil darkness, and 8% of past June days reached Kp 5.
How dark is Sestroretsk in June?: Sestroretsk averages 1.0 hours of civil night a night in June 2027, from 2 h 24 min on the 1st to 1 h 7 min on the last night.
How cloudy is Sestroretsk in June?: NASA POWER's 2001 to 2020 climatology gives Sestroretsk's 1 degree cell 66% mean cloud in June, against 74% for the whole year. It is an all-hours average, not a forecast.
What is the best night in June 2027 for aurora in Sestroretsk?: By darkness and moon alone, Jun 1, with 2 h 14 min of moon-free darkness inside 10 PM to 2 AM at Sestroretsk. Activity on that date will only be known hours ahead.
Is June or July better in Sestroretsk?: By civil night times the clear share, June scores 0.2 hours at Sestroretsk and July 1.0. July comes out ahead.

Sources and verification

SunCalchttps://github.com/mourner/suncalc
NASA POWER climatologyhttps://power.larc.nasa.gov/docs/services/api/temporal/climatology/
GFZ Potsdam Kp indexhttps://kp.gfz.de/en/data
NOAA SWPC, Tips on viewing the aurorahttps://www.spaceweather.gov/content/tips-viewing-aurora

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.