North Denmark, Denmark
Northern lights in Nørresundby
Answer
Tonight
Waiting on darkness
It is not civil-dark yet. The next dusk is listed below.
Observed 11:49 UTC, forecast 13:20 UTC, 91 min lead
Clock times in Europe/Copenhagen
Storm level needed
Nørresundby sits at 57.06N 9.92E in North Denmark, Denmark. The IGRF-14 centered dipole puts Nørresundby at 57.1 degrees geomagnetic latitude, 0.0 degrees closer to the magnetic pole than its map latitude suggests. Nørresundby sits at 57.1 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.
"aurora is commonly visible at high latitudes (northern Michigan and Maine)"
The nearest other Glow towns are Aalborg (1 km), Hjørring (45 km), Frederikshavn (56 km). Aalborg sits 0.0 degrees lower on the dipole and needs the same Kp.
Approximate: SWPC calls its Kp to latitude rule an average, and a centered dipole can differ by a degree from fuller field models. How the storm level is matched
The year in darkness
Every night of 2026 at Nørresundby has some civil darkness; the shortest month sample still has 3.6 hours. Glow's dark season, at least 4 hours of civil night between 18:00 and 06:00, runs from July 7 to June 4 across New Year, 333 days in 2026. Nørresundby's longest night of the year, Dec 20, has 15 h 31 min of civil night.
Solar midnight at Nørresundby, when the sun is lowest, falls at 00:15 on local clocks on December 15 and 01:21 on June 15. That is 15 min after midnight in December and 1 h 21 min after midnight in June, the gap set by daylight saving and the equation of time. So at Nørresundby the darkest hour sits near the middle of SWPC's 10 PM to 2 AM window in winter.
Month by month
| Month | Night | Civil | Cloud | Clear dark | |
|---|---|---|---|---|---|
| Jan | 14.9 h | 11.8 h | 85% | 2.2 h | |
| Feb | 13.0 h | 10.0 h | 84% | 2.1 h | |
| Mar | 10.8 h | 7.7 h | 75% | 2.7 h | |
| Apr | 8.1 h | 4.0 h | 67% | 2.7 h | |
| May | 5.5 h | 0.0 h | 63% | 2.0 h | |
| Jun | 3.6 h | 0.0 h | 64% | 1.3 h | |
| Jul | 4.5 h | 0.0 h | 64% | 1.7 h | |
| Aug | 7.2 h | 1.6 h | 67% | 2.4 h | |
| Sep | 9.8 h | 6.5 h | 71% | 2.8 hbest | |
| Oct | 12.2 h | 9.3 h | 77% | 2.8 h | |
| Nov | 14.3 h | 11.3 h | 84% | 2.3 h | |
| Dec | 15.5 h | 12.2 h | 85% | 2.3 h |
By the 15th-of-the-month sample, December is the darkest month at Nørresundby with 15.5 hours of civil night and June the lightest at 3.6. Across the year Nørresundby gets 3,629 hours of civil night. Astronomical night at Nørresundby, the sun 18 degrees or more below the horizon, lasts 12.2 hours on December 15.
NASA POWER's 2001 to 2020 all-hours climatology puts mean cloud amount for the 1 degree cell around Nørresundby at 74% across the year, from 63% in May to 85% in January. In the months with at least 4 hours of civil night Nørresundby averages 75%, against a median of 70% for Glow towns in Denmark.
Multiplying civil night by the clear share of the sky gives September the best score, 2.8 hours, ahead of October at 2.8. Nørresundby's equinox months score 2.7 in March and 2.8 in September, the weeks SWPC links with larger storms.
Kp history
From 1996 to 2025, the GFZ Potsdam record shows a 3-hour Kp of 5 or more, the level that puts the average oval edge over Nørresundby, on 10% of days. At Nørresundby's level the share runs from 5% in December to 14% in September, while storm days with Kp 5 or more made up 10%.
Share of UTC days in each calendar month whose highest 3-hour Kp reached Kp 5. Kp history by year
Moon, next 30 nights
Over the 30 nights from Oct 2, the new moon falls on Oct 10 and the full moon on Oct 26, in Europe/Copenhagen dates. 14 of the 30 nights at Nørresundby have at least 2 moon-free dark hours inside 10 PM to 2 AM, and Oct 6 has the most at 4 h. Tonight Nørresundby has 11 h 12 min of civil night, 1 h 26 min of it with the moon down.
- 2
57% lit
1.4 h
- 3
46% lit
2.9 h
- 4
35% lit
4.5 h
- 5
25% lit
6.2 h
- 6
16% lit
7.8 h
- 7
8% lit
9.3 h
- 8
3% lit
10.8 h
- 9
1% lit
11.8 h
- 10
0% lit
11.8 h
- 11
2% lit
11.9 h
- 12
5% lit
12.0 h
- 13
11% lit
12.1 h
- 14
17% lit
12.1 h
- 15
25% lit
12.0 h
- 16
34% lit
11.1 h
- 17
43% lit
9.9 h
- 18
52% lit
8.6 h
- 19
62% lit
7.3 h
- 20
71% lit
5.9 h
- 21
80% lit
4.5 h
- 22
87% lit
3.1 h
- 23
94% lit
1.7 h
- 24
98% lit
0.2 h
- 25
100% lit
0.0 h
- 26
99% lit
0.0 h
- 27
95% lit
0.0 h
- 28
89% lit
0.0 h
- 29
81% lit
0.4 h
- 30
71% lit
1.7 h
- 31
60% lit
3.4 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.
Within Denmark
Among the 4 Glow towns in North Denmark, Nørresundby ranks 3rd by dipole latitude against a regional median of 57.2 degrees; Hjørring sits highest at 57.5. Among the 34 Glow towns in Denmark, Nørresundby ranks 3rd by dipole latitude against a national median of 55.6 degrees; Hjørring sits highest at 57.5. On December 15 Nørresundby gets 15.5 hours of civil night, 1st longest of 34 in Denmark, where the median is 15.3.
Questions
- Can you see the northern lights in Nørresundby?
- Nørresundby sits at 57.1 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. Clear, dark sky over Nørresundby still decides it.
- When is it dark enough in Nørresundby?
- Every night at Nørresundby has civil darkness. Tonight has 11 h 12 min, and December 15 has 15.5 hours.
- What is the best month for aurora in Nørresundby?
- September, by civil night at Nørresundby times the clear share of the sky from NASA POWER's 2001 to 2020 average.
- How cloudy is Nørresundby in the dark months?
- About 75% mean cloud amount over Nørresundby in the months with at least 4 hours of civil night, from NASA POWER's 2001 to 2020 all-hours climatology.
- How often is activity high enough for Nørresundby?
- A 3-hour Kp of 5 or more, the level that puts the average oval edge overhead, occurred on 10% of days from 1996 to 2025 in the GFZ Potsdam record.
- Why does this page point to Aalborg?
- Nørresundby sits within 15 km of Aalborg with the same rounded dipole latitude, Kp and dark season, so Glow treats Aalborg as the main page for both.
Nearby and related
Nearest Glow towns
Nørresundby by month
Region and comparisons