Can you see the southern lights in Hobart in July?

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

How dark is Hobart in July?

Hobart averages 13.5 hours of civil night a night in July 2027, from 13 h 46 min on the 1st to 13 h 6 min on the last night.

How cloudy is Hobart in July?

NASA POWER's 2001 to 2020 climatology gives Hobart's 1 degree cell 62% mean cloud in July, against 63% for the whole year. It is an all-hours average, not a forecast.

What is the best night in July 2027 for aurora in Hobart?

By darkness and moon alone, Jul 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Hobart. Activity on that date will only be known hours ahead.

Is July or August better in Hobart?

By civil night times the clear share, July scores 5.1 hours at Hobart and August 4.8. July comes out ahead.

Hobart · July 2027

Southern lights in Hobart in July 2027

Answer

July gives Hobart 13.5 hours of civil night on the 15th, the 2nd darkest of its 12 months, under 62% mean cloud. 0% of July days since 1996 reached Kp 9, enough for the oval edge to reach Hobart.

13.5 h

civil night, average night

SunCalc for -42.88, 147.33; NASA POWER; GFZ Kp

July against the rest of the year

3.0

3.5

4.1

4.6

4.8

5.7

5.1

4.8

4.3

3.6

2.7

2.5

July cloud at Hobart averages 62% in NASA POWER's 2001 to 2020 record, close to its yearly mean of 63%. June is Hobart's clearest month at 59%. By civil night times clear sky, July scores 5.1 hours at Hobart, 2nd of 12. Anadyr, 12,252 km away, averages 71%, cloudier by 9 points.

Civil night at Hobart starts July at 13 h 46 min and reaches 13 h 6 min by July 31, 0.7 hours shorter. SWPC's 10 PM to 2 AM window is fully dark on every night. True astronomical darkness, the sun 18 degrees down, lasts 11.2 hours on the 15th.

July night by night

July opens toward a new moon on Jul 4, with full moon on Jul 19, in Australia/Hobart dates. Hobart gets 211 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: Jul 1 (4 h), Jul 2 (4 h), Jul 3 (4 h).

1
9% lit
12.4 h
2
4% lit
13.6 h
3
1% lit
13.7 h
4
0% lit
13.7 h
New
5
3% lit
13.1 h
6
9% lit
11.7 h
7
17% lit
10.3 h
8
27% lit
9.1 h
9
37% lit
7.8 h
10
48% lit
6.7 h
11
59% lit
5.5 h
12
69% lit
4.3 h
13
78% lit
3.2 h
14
85% lit
2.1 h
15
92% lit
1.2 h
16
96% lit
0.4 h
17
99% lit
0.0 h
18
100% lit
0.0 h
19
99% lit
0.0 h
Full
20
97% lit
1.0 h
21
93% lit
2.0 h
22
87% lit
3.0 h
23
80% lit
4.1 h
24
71% lit
5.1 h
25
62% lit
6.2 h
26
51% lit
7.3 h
27
41% lit
8.5 h
28
30% lit
9.7 h
29
20% lit
10.9 h
30
12% lit
11.9 h
31
5% lit
12.8 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 Julys

Hobart needs Kp 9 for the average oval edge to sit overhead. 1 of the 930 July days from 1996 to 2025 (0%) reached it in the GFZ Potsdam record, one of the three most active months for that level; storm days with Kp 5 or more made up 9%. Hobart sits at 49.6 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.

July across Australia

Coming from June (13.8 hours at Hobart), July loses darkness, and August brings shorter nights (12.6 hours on the 15th).

Darkness and moon, every night

Hobart, July 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
Thu Jul 1	13 h 46 min	11 h 26 min	12 h 23 min	4 h	9%
Fri Jul 2	13 h 45 min	11 h 25 min	13 h 33 min	4 h	4%
Sat Jul 3	13 h 44 min	11 h 25 min	13 h 44 min	4 h	1%
Sun Jul 4	13 h 44 min	11 h 24 min	13 h 44 min	4 h	0%
Mon Jul 5	13 h 43 min	11 h 24 min	13 h 5 min	4 h	3%
Tue Jul 6	13 h 42 min	11 h 23 min	11 h 42 min	4 h	9%
Wed Jul 7	13 h 41 min	11 h 22 min	10 h 21 min	4 h	17%
Thu Jul 8	13 h 40 min	11 h 21 min	9 h 5 min	3 h 59 min	27%
Fri Jul 9	13 h 39 min	11 h 20 min	7 h 51 min	2 h 45 min	37%
Sat Jul 10	13 h 38 min	11 h 20 min	6 h 39 min	1 h 34 min	48%
Sun Jul 11	13 h 37 min	11 h 19 min	5 h 28 min	23 min	59%
Mon Jul 12	13 h 36 min	11 h 18 min	4 h 18 min	0 min	69%
Tue Jul 13	13 h 35 min	11 h 17 min	3 h 11 min	0 min	78%
Wed Jul 14	13 h 34 min	11 h 16 min	2 h 7 min	0 min	85%
Thu Jul 15	13 h 32 min	11 h 14 min	1 h 10 min	0 min	92%
Fri Jul 16	13 h 31 min	11 h 13 min	22 min	0 min	96%
Sat Jul 17	13 h 30 min	11 h 12 min	0 min	0 min	99%
Sun Jul 18	13 h 28 min	11 h 11 min	0 min	0 min	100%
Mon Jul 19	13 h 27 min	11 h 10 min	0 min	0 min	99%
Tue Jul 20	13 h 25 min	11 h 8 min	1 h	0 min	97%
Wed Jul 21	13 h 24 min	11 h 7 min	2 h 1 min	0 min	93%
Thu Jul 22	13 h 22 min	11 h 5 min	3 h 2 min	0 min	87%
Fri Jul 23	13 h 20 min	11 h 4 min	4 h 4 min	0 min	80%
Sat Jul 24	13 h 19 min	11 h 3 min	5 h 6 min	44 min	71%
Sun Jul 25	13 h 17 min	11 h 1 min	6 h 10 min	1 h 49 min	62%
Mon Jul 26	13 h 15 min	10 h 59 min	7 h 18 min	2 h 57 min	51%
Tue Jul 27	13 h 14 min	10 h 58 min	8 h 29 min	4 h	41%
Wed Jul 28	13 h 12 min	10 h 56 min	9 h 41 min	4 h	30%
Thu Jul 29	13 h 10 min	10 h 55 min	10 h 52 min	4 h	20%
Fri Jul 30	13 h 8 min	10 h 53 min	11 h 54 min	4 h	12%
Sat Jul 31	13 h 6 min	10 h 51 min	12 h 46 min	4 h	5%

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

Questions

Can you see the southern lights in Hobart in July?: On dark, clear nights with enough activity. 31 of 31 nights at Hobart have civil darkness, and 0% of past July days reached Kp 9.
How dark is Hobart in July?: Hobart averages 13.5 hours of civil night a night in July 2027, from 13 h 46 min on the 1st to 13 h 6 min on the last night.
How cloudy is Hobart in July?: NASA POWER's 2001 to 2020 climatology gives Hobart's 1 degree cell 62% mean cloud in July, against 63% for the whole year. It is an all-hours average, not a forecast.
What is the best night in July 2027 for aurora in Hobart?: By darkness and moon alone, Jul 1, with 4 h of moon-free darkness inside 10 PM to 2 AM at Hobart. Activity on that date will only be known hours ahead.
Is July or August better in Hobart?: By civil night times the clear share, July scores 5.1 hours at Hobart and August 4.8. 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.