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Nacka · June 2027

Northern lights in Nacka in June 2027

Answer

June gives Nacka 1.9 hours of civil night on the 15th, the lightest month of its year, under 62% mean cloud. 8% of June days since 1996 reached Kp 5, enough for the oval edge to reach Nacka.
2.2 h
civil night, average night
SunCalc for 59.31, 18.16; NASA POWER; GFZ Kp

June against the rest of the year

June cloud at Nacka averages 62% in NASA POWER's 2001 to 2020 record, 13 points clearer than its yearly mean. May is Nacka's clearest month at 62%. By civil night times clear sky, June scores 0.7 hours at Nacka, 12th of 12. Stockholm, 6 km away, averages the same 62%.

Civil night at Nacka starts June at 3 h and reaches 2 h 9 min by June 30, 0.8 hours shorter. No night keeps the 10 PM to 2 AM window fully dark at Nacka. The sun never reaches 18 degrees down, so Nacka 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/Stockholm dates. Nacka gets 27 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 45 min), Jun 2 (2 h 42 min), Jun 3 (2 h 39 min).

  1. 1

    11% lit

    2.8 h

  2. 2

    5% lit

    2.9 h

  3. 3

    1% lit

    2.8 h

  4. 4

    0% lit

    2.7 h

  5. 5

    2% lit

    2.5 h

  6. 6

    6% lit

    1.8 h

  7. 7

    13% lit

    1.5 h

  8. 8

    23% lit

    1.3 h

  9. 9

    33% lit

    1.2 h

  10. 10

    44% lit

    1.1 h

  11. 11

    55% lit

    1.0 h

  12. 12

    66% lit

    0.9 h

  13. 13

    75% lit

    0.8 h

  14. 14

    84% lit

    0.7 h

  15. 15

    91% lit

    0.6 h

  16. 16

    96% lit

    0.3 h

  17. 17

    99% lit

    0.0 h

  18. 18

    100% lit

    0.0 h

  19. 19

    99% lit

    0.0 h

  20. 20

    97% lit

    0.0 h

  21. 21

    93% lit

    0.0 h

  22. 22

    87% lit

    0.0 h

  23. 23

    80% lit

    0.0 h

  24. 24

    72% lit

    0.1 h

  25. 25

    63% lit

    0.1 h

  26. 26

    53% lit

    0.2 h

  27. 27

    43% lit

    0.2 h

  28. 28

    33% lit

    0.3 h

  29. 29

    23% lit

    0.5 h

  30. 30

    14% lit

    0.7 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 Junes

Nacka 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%. Nacka sits at 57.9 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 Sweden

Nacka ranks 7th in Sweden for civil night on June 15, behind Malmö at 4.3 hours. Coming from May (4.7 hours at Nacka), June loses darkness, and the nights keep growing into July (3.5 hours on the 15th). The June solstice falls on June 21, 16:07 Nacka time.

Civil night on June 15 and June cloud, month-page towns in Sweden
TownCivil nightCloud
Malmö4.3 h62%
Helsingborg4.1 h67%
Gothenburg3.2 h63%
Jönköping3.2 h66%
Linköping2.7 h67%
Örebro2.0 h69%
Nacka1.9 h62%
Stockholm1.9 h62%
Sollentuna1.8 h69%
Västerås1.6 h69%
Uppsala1.2 h69%
Umeå0.0 h63%

Darkness and moon, every night

Nacka, June 2027: each night from local noon to the next noon
NightCivilAstronomicalMoon-free darkMoon-free, 10 PM to 2 AMMoon lit
Tue Jun 13 h0 min2 h 47 min2 h 45 min11%
Wed Jun 22 h 54 min0 min2 h 54 min2 h 42 min5%
Thu Jun 32 h 49 min0 min2 h 49 min2 h 39 min1%
Fri Jun 42 h 43 min0 min2 h 43 min2 h 36 min0%
Sat Jun 52 h 38 min0 min2 h 27 min2 h 22 min2%
Sun Jun 62 h 33 min0 min1 h 49 min1 h 47 min6%
Mon Jun 72 h 28 min0 min1 h 29 min1 h 29 min13%
Tue Jun 82 h 23 min0 min1 h 17 min1 h 17 min23%
Wed Jun 92 h 19 min0 min1 h 10 min1 h 10 min33%
Thu Jun 102 h 14 min0 min1 h 4 min1 h 4 min44%
Fri Jun 112 h 10 min0 min59 min59 min55%
Sat Jun 122 h 6 min0 min55 min55 min66%
Sun Jun 132 h 3 min0 min50 min50 min75%
Mon Jun 142 h0 min44 min44 min84%
Tue Jun 151 h 57 min0 min35 min35 min91%
Wed Jun 161 h 55 min0 min20 min20 min96%
Thu Jun 171 h 53 min0 min0 min0 min99%
Fri Jun 181 h 51 min0 min0 min0 min100%
Sat Jun 191 h 50 min0 min0 min0 min99%
Sun Jun 201 h 50 min0 min0 min0 min97%
Mon Jun 211 h 50 min0 min0 min0 min93%
Tue Jun 221 h 50 min0 min0 min0 min87%
Wed Jun 231 h 51 min0 min2 min2 min80%
Thu Jun 241 h 52 min0 min4 min4 min72%
Fri Jun 251 h 54 min0 min7 min7 min63%
Sat Jun 261 h 56 min0 min10 min10 min53%
Sun Jun 271 h 59 min0 min14 min14 min43%
Mon Jun 282 h 2 min0 min20 min20 min33%
Tue Jun 292 h 5 min0 min28 min28 min23%
Wed Jun 302 h 9 min0 min44 min44 min14%
Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Nacka in June?
On dark, clear nights with enough activity. 30 of 30 nights at Nacka have civil darkness, and 8% of past June days reached Kp 5.
How dark is Nacka in June?
Nacka averages 2.2 hours of civil night a night in June 2027, from 3 h on the 1st to 2 h 9 min on the last night.
How cloudy is Nacka in June?
NASA POWER's 2001 to 2020 climatology gives Nacka's 1 degree cell 62% mean cloud in June, against 75% for the whole year. It is an all-hours average, not a forecast.
What is the best night in June 2027 for aurora in Nacka?
By darkness and moon alone, Jun 1, with 2 h 45 min of moon-free darkness inside 10 PM to 2 AM at Nacka. Activity on that date will only be known hours ahead.
Is June or July better in Nacka?
By civil night times the clear share, June scores 0.7 hours at Nacka and July 1.3. July 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.