Can you see the southern lights in Mosgiel in March?

On dark, clear nights with enough activity. 31 of 31 nights at Mosgiel have civil darkness, and 0% of past March days reached Kp 9.

How dark is Mosgiel in March?

Mosgiel averages 10.5 hours of civil night a night in March 2027, from 9 h 40 min on the 1st to 11 h 20 min on the last night.

How cloudy is Mosgiel in March?

NASA POWER's 2001 to 2020 climatology gives Mosgiel's 1 degree cell 70% mean cloud in March, against 71% for the whole year. It is an all-hours average, not a forecast.

What is the best night in March 2027 for aurora in Mosgiel?

By darkness and moon alone, Mar 3, with 4 h of moon-free darkness inside 10 PM to 2 AM at Mosgiel. Activity on that date will only be known hours ahead.

Is March or April better in Mosgiel?

By civil night times the clear share, March scores 3.2 hours at Mosgiel and April 3.6. April comes out ahead.

Mosgiel · March 2027

Southern lights in Mosgiel in March 2027

Answer

March gives Mosgiel 10.5 hours of civil night on the 15th, the 7th darkest of its 12 months, under 70% mean cloud. 0% of March days since 1996 reached Kp 9, enough for the oval edge to reach Mosgiel.

10.5 h

civil night, average night

SunCalc for -45.88, 170.35; NASA POWER; GFZ Kp

March against the rest of the year

1.9

2.6

3.2

3.6

4.0

4.5

4.6

3.7

3.4

2.7

2.0

1.7

March cloud at Mosgiel averages 70% in NASA POWER's 2001 to 2020 record, close to its yearly mean of 71%. July is Mosgiel's clearest month at 67%. By civil night times clear sky, March scores 3.2 hours at Mosgiel, 7th of 12. Seattle, 12,280 km away, averages 79%, cloudier by 9 points.

Civil night at Mosgiel starts March at 9 h 40 min and reaches 11 h 20 min by March 31 as the nights lengthen by 1.7 hours. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 8.1 hours on the 15th.

March night by night

March opens toward a new moon on Mar 8, with full moon on Mar 22, in Pacific/Auckland dates. Mosgiel gets 161 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: Mar 3 (4 h), Mar 4 (4 h), Mar 5 (4 h).

1
38% lit
3.5 h
2
29% lit
4.5 h
3
21% lit
5.5 h
4
14% lit
6.6 h
5
8% lit
7.8 h
6
4% lit
8.9 h
7
1% lit
10.0 h
8
0% lit
10.1 h
New
9
1% lit
10.1 h
10
5% lit
10.2 h
11
10% lit
10.2 h
12
17% lit
9.8 h
13
26% lit
9.3 h
14
36% lit
8.7 h
15
48% lit
7.8 h
16
59% lit
6.7 h
17
70% lit
5.5 h
18
80% lit
4.1 h
19
88% lit
2.8 h
20
95% lit
1.4 h
21
99% lit
0.1 h
22
100% lit
0.0 h
Full
23
99% lit
0.0 h
24
95% lit
0.0 h
25
89% lit
0.3 h
26
82% lit
0.8 h
27
74% lit
1.4 h
28
65% lit
2.2 h
29
56% lit
3.1 h
30
46% lit
4.2 h
31
37% lit
5.3 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 Marchs

Mosgiel needs Kp 9 for the average oval edge to sit overhead. 0 of the 930 March days from 1996 to 2025 (0%) reached it in the GFZ Potsdam record, 4th of 12 months; storm days with Kp 5 or more made up 12%. Mosgiel sits at 49.4 degrees geomagnetic. The lowest NOAA storm level whose typical viewing latitude reaches it is G4 (Kp = 8, including a 9-). By SWPC's rule the average oval edge is overhead only at Kp 9.

March across New Zealand

Coming from February (8.9 hours at Mosgiel), March adds darkness, and the nights keep growing into April (12.1 hours on the 15th). The March equinox falls on March 21, 09:25 Mosgiel time, inside the weeks SWPC links with larger storms.

Darkness and moon, every night

Mosgiel, March 2027: each night from local noon to the next noon
Night	Civil	Astronomical	Moon-free dark	Moon-free, 10 PM to 2 AM	Moon lit
Mon Mar 1	9 h 40 min	7 h 7 min	3 h 29 min	2 h 30 min	38%
Tue Mar 2	9 h 44 min	7 h 11 min	4 h 27 min	3 h 26 min	29%
Wed Mar 3	9 h 47 min	7 h 16 min	5 h 31 min	4 h	21%
Thu Mar 4	9 h 50 min	7 h 20 min	6 h 38 min	4 h	14%
Fri Mar 5	9 h 54 min	7 h 24 min	7 h 47 min	4 h	8%
Sat Mar 6	9 h 57 min	7 h 28 min	8 h 56 min	4 h	4%
Sun Mar 7	10 h 1 min	7 h 32 min	10 h 1 min	4 h	1%
Mon Mar 8	10 h 4 min	7 h 36 min	10 h 4 min	4 h	0%
Tue Mar 9	10 h 7 min	7 h 40 min	10 h 7 min	4 h	1%
Wed Mar 10	10 h 11 min	7 h 44 min	10 h 11 min	4 h	5%
Thu Mar 11	10 h 14 min	7 h 48 min	10 h 9 min	4 h	10%
Fri Mar 12	10 h 17 min	7 h 52 min	9 h 47 min	4 h	17%
Sat Mar 13	10 h 21 min	7 h 56 min	9 h 18 min	4 h	26%
Sun Mar 14	10 h 24 min	7 h 59 min	8 h 39 min	3 h 39 min	36%
Mon Mar 15	10 h 28 min	8 h 3 min	7 h 48 min	2 h 46 min	48%
Tue Mar 16	10 h 31 min	8 h 7 min	6 h 43 min	1 h 40 min	59%
Wed Mar 17	10 h 34 min	8 h 11 min	5 h 27 min	23 min	70%
Thu Mar 18	10 h 38 min	8 h 15 min	4 h 7 min	0 min	80%
Fri Mar 19	10 h 41 min	8 h 18 min	2 h 45 min	0 min	88%
Sat Mar 20	10 h 44 min	8 h 22 min	1 h 26 min	0 min	95%
Sun Mar 21	10 h 47 min	8 h 26 min	8 min	0 min	99%
Mon Mar 22	10 h 51 min	8 h 29 min	0 min	0 min	100%
Tue Mar 23	10 h 54 min	8 h 33 min	0 min	0 min	99%
Wed Mar 24	10 h 57 min	8 h 36 min	0 min	0 min	95%
Thu Mar 25	11 h 1 min	8 h 40 min	16 min	0 min	89%
Fri Mar 26	11 h 4 min	8 h 44 min	47 min	0 min	82%
Sat Mar 27	11 h 7 min	8 h 47 min	1 h 26 min	0 min	74%
Sun Mar 28	11 h 10 min	8 h 50 min	2 h 13 min	22 min	65%
Mon Mar 29	11 h 13 min	8 h 54 min	3 h 9 min	1 h 16 min	56%
Tue Mar 30	11 h 17 min	8 h 57 min	4 h 11 min	2 h 16 min	46%
Wed Mar 31	11 h 20 min	9 h 1 min	5 h 17 min	3 h 20 min	37%

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

Questions

Can you see the southern lights in Mosgiel in March?: On dark, clear nights with enough activity. 31 of 31 nights at Mosgiel have civil darkness, and 0% of past March days reached Kp 9.
How dark is Mosgiel in March?: Mosgiel averages 10.5 hours of civil night a night in March 2027, from 9 h 40 min on the 1st to 11 h 20 min on the last night.
How cloudy is Mosgiel in March?: NASA POWER's 2001 to 2020 climatology gives Mosgiel's 1 degree cell 70% mean cloud in March, against 71% for the whole year. It is an all-hours average, not a forecast.
What is the best night in March 2027 for aurora in Mosgiel?: By darkness and moon alone, Mar 3, with 4 h of moon-free darkness inside 10 PM to 2 AM at Mosgiel. Activity on that date will only be known hours ahead.
Is March or April better in Mosgiel?: By civil night times the clear share, March scores 3.2 hours at Mosgiel and April 3.6. April 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.