Southland, New Zealand
Southern lights in Invercargill
Answer
Tonight
Darkness window open
Civil darkness has begun.
Observed 11:55 UTC, forecast 13:26 UTC, 91 min lead
Clock times in Pacific/Auckland
Storm level needed
Invercargill sits at 46.40S 168.35E in Southland, New Zealand. The IGRF-14 centered dipole puts Invercargill at 50.2 degrees geomagnetic latitude, 3.8 degrees closer to the magnetic pole than its map latitude suggests. Invercargill sits at 50.2 degrees geomagnetic. The lowest NOAA storm level whose typical viewing latitude reaches it is G3 (Kp = 7). By SWPC's rule the average oval edge is overhead only at Kp 8.
"aurora has been seen as low as Illinois and Oregon (typically 50° geomagnetic lat.)"
The nearest other Glow towns are Gore (56 km), Queenstown (154 km), Dunedin (176 km). Gore sits 0.4 degrees lower on the dipole, Kp 9 against 8 here.
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 Invercargill has some civil darkness; the shortest month sample still has 6.8 hours. Every evening of the year at Invercargill clears Glow's dark-season bar of 4 hours of civil night between 18:00 and 06:00. Invercargill's longest night of the year, Jun 19, has 14 h 9 min of civil night.
Solar midnight at Invercargill, when the sun is lowest, falls at 01:41 on local clocks on December 15 and 00:47 on June 15. That is 1 h 41 min after midnight in December and 47 min after midnight in June, the gap set by daylight saving and the equation of time. So at Invercargill the darkest hour sits late in SWPC's 10 PM to 2 AM window.
Month by month
| Month | Night | Civil | Cloud | Clear dark | |
|---|---|---|---|---|---|
| Jan | 7.3 h | 3.5 h | 75% | 1.8 h | |
| Feb | 8.8 h | 6.0 h | 73% | 2.4 h | |
| Mar | 10.4 h | 8.0 h | 71% | 3.0 h | |
| Apr | 12.1 h | 9.8 h | 73% | 3.3 h | |
| May | 13.4 h | 11.0 h | 72% | 3.8 h | |
| Jun | 14.1 h | 11.6 h | 70% | 4.2 h | |
| Jul | 13.8 h | 11.4 h | 68% | 4.4 hbest | |
| Aug | 12.7 h | 10.4 h | 69% | 3.9 h | |
| Sep | 11.2 h | 8.8 h | 71% | 3.2 h | |
| Oct | 9.5 h | 6.8 h | 74% | 2.5 h | |
| Nov | 7.8 h | 4.4 h | 77% | 1.8 h | |
| Dec | 6.8 h | 2.4 h | 75% | 1.7 h |
By the 15th-of-the-month sample, June is the darkest month at Invercargill with 14.1 hours of civil night and December the lightest at 6.8. Across the year Invercargill gets 3,894 hours of civil night. Astronomical night at Invercargill, the sun 18 degrees or more below the horizon, lasts 2.4 hours on December 15.
NASA POWER's 2001 to 2020 all-hours climatology puts mean cloud amount for the 1 degree cell around Invercargill at 72% across the year, from 68% in July to 77% in November. In the months with at least 4 hours of civil night Invercargill averages 72%, against a median of 66% for Glow towns in New Zealand.
Multiplying civil night by the clear share of the sky gives July the best score, 4.4 hours, ahead of June at 4.2. Invercargill's equinox months score 3.0 in March and 3.2 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 8 or more, the level that puts the average oval edge over Invercargill, on 0% of days. At Invercargill's level the share runs from 0% in February to 1% in November, 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 8. Kp history by year
Moon, next 30 nights
Over the 30 nights from Oct 2, the new moon falls on Oct 11 and the full moon on Oct 26, in Pacific/Auckland dates. 15 of the 30 nights at Invercargill have at least 2 moon-free dark hours inside 10 PM to 2 AM, and Oct 2 has the most at 4 h. Tonight Invercargill has 10 h 13 min of civil night, 6 h 36 min of it with the moon down.
- 2
63% lit
6.6 h
- 3
51% lit
7.5 h
- 4
40% lit
8.1 h
- 5
29% lit
8.6 h
- 6
20% lit
9.0 h
- 7
12% lit
9.3 h
- 8
5% lit
9.6 h
- 9
2% lit
9.8 h
- 10
0% lit
9.8 h
- 11
1% lit
9.5 h
- 12
4% lit
8.3 h
- 13
8% lit
7.0 h
- 14
14% lit
5.9 h
- 15
22% lit
4.8 h
- 16
30% lit
3.9 h
- 17
39% lit
3.2 h
- 18
48% lit
2.6 h
- 19
58% lit
2.1 h
- 20
67% lit
1.7 h
- 21
76% lit
1.4 h
- 22
84% lit
1.0 h
- 23
91% lit
0.7 h
- 24
96% lit
0.4 h
- 25
99% lit
0.0 h
- 26
100% lit
0.0 h
- 27
98% lit
1.2 h
- 28
93% lit
2.5 h
- 29
85% lit
3.8 h
- 30
76% lit
4.7 h
- 31
66% lit
5.5 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 New Zealand
Among the 2 Glow towns in Southland, Invercargill ranks 1st by dipole latitude against a regional median of 50.0 degrees, the highest of them. Among the 11 Glow towns in New Zealand, Invercargill ranks 1st by dipole latitude against a national median of 48.4 degrees, the highest of them. On December 15 Invercargill gets 6.8 hours of civil night, 11th longest of 11 in New Zealand, where the median is 7.1.
Questions
- Can you see the southern lights in Invercargill?
- Invercargill sits at 50.2 degrees geomagnetic. The lowest NOAA storm level whose typical viewing latitude reaches it is G3 (Kp = 7). By SWPC's rule the average oval edge is overhead only at Kp 8. Clear, dark sky over Invercargill still decides it.
- When is it dark enough in Invercargill?
- Every night at Invercargill has civil darkness. Tonight has 10 h 13 min, and December 15 has 6.8 hours.
- What is the best month for aurora in Invercargill?
- July, by civil night at Invercargill times the clear share of the sky from NASA POWER's 2001 to 2020 average.
- How cloudy is Invercargill in the dark months?
- About 72% mean cloud amount over Invercargill 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 Invercargill?
- A 3-hour Kp of 8 or more, the level that puts the average oval edge overhead, occurred on 0% of days from 1996 to 2025 in the GFZ Potsdam record.
Nearby and related
Nearest Glow towns
Invercargill by month
Region and comparisons