Can you see the northern lights in Corner Brook in June?

On dark, clear nights with enough activity. 30 of 30 nights at Corner Brook have civil darkness, and 8% of past June days reached Kp 5.

How dark is Corner Brook in June?

Corner Brook averages 6.3 hours of civil night a night in June 2027, from 6 h 34 min on the 1st to 6 h 19 min on the last night.

How cloudy is Corner Brook in June?

NASA POWER's 2001 to 2020 climatology gives Corner Brook's 1 degree cell 76% 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 Corner Brook?

By darkness and moon alone, Jun 1, with 3 h 57 min of moon-free darkness inside 10 PM to 2 AM at Corner Brook. Activity on that date will only be known hours ahead.

Is June or July better in Corner Brook?

By civil night times the clear share, June scores 1.5 hours at Corner Brook and July 1.9. July comes out ahead.

Corner Brook · June 2027

Northern lights in Corner Brook in June 2027

Answer

June gives Corner Brook 6.3 hours of civil night on the 15th, the lightest month of its year, under 76% mean cloud. 8% of June days since 1996 reached Kp 5, enough for the oval edge to reach Corner Brook.

6.3 h

civil night, average night

SunCalc for 48.95, -57.95; NASA POWER; GFZ Kp

June against the rest of the year

3.1

2.8

2.6

2.2

1.8

1.5

1.9

2.4

3.2

3.4

2.9

2.7

June cloud at Corner Brook averages 76% in NASA POWER's 2001 to 2020 record, close to its yearly mean of 75%. September is Corner Brook's clearest month at 69%. By civil night times clear sky, June scores 1.5 hours at Corner Brook, 12th of 12. Sydney, 355 km away, averages 70%, clearer by 6 points.

Civil night at Corner Brook starts June at 6 h 34 min and reaches 6 h 19 min by June 30, 0.3 hours shorter. No night keeps the 10 PM to 2 AM window fully dark at Corner Brook. The sun never reaches 18 degrees down, so Corner Brook gets no astronomical night in June.

June night by night

June opens toward a new moon on Jun 4, with full moon on Jun 18, in America/St_Johns dates. Corner Brook gets 88 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 (3 h 57 min), Jun 2 (3 h 56 min), Jun 3 (3 h 55 min).

1
10% lit
5.3 h
2
4% lit
5.8 h
3
1% lit
6.5 h
4
0% lit
6.5 h
New
5
2% lit
5.7 h
6
8% lit
4.9 h
7
15% lit
4.3 h
8
24% lit
3.9 h
9
35% lit
3.5 h
10
46% lit
3.2 h
11
57% lit
2.9 h
12
68% lit
2.6 h
13
77% lit
2.3 h
14
85% lit
2.0 h
15
92% lit
1.5 h
16
96% lit
0.9 h
17
99% lit
0.2 h
18
100% lit
0.0 h
Full
19
99% lit
0.3 h
20
96% lit
0.8 h
21
92% lit
1.2 h
22
86% lit
1.5 h
23
78% lit
1.8 h
24
70% lit
2.0 h
25
61% lit
2.3 h
26
51% lit
2.5 h
27
41% lit
2.8 h
28
31% lit
3.1 h
29
21% lit
3.5 h
30
13% lit
4.1 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

Corner Brook 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%. Corner Brook sits at 57.8 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 Canada

Corner Brook ranks 8th in Canada for civil night on June 15, behind Greater Sudbury at 6.8 hours. Coming from May (7.3 hours at Corner Brook), June loses darkness, and the nights keep growing into July (6.8 hours on the 15th). The June solstice falls on June 21, 11:37 Corner Brook time.

Civil night on June 15 and June cloud, month-page towns in Canada
Town	Civil night	Cloud
Greater Sudbury	6.8 h	60%
Trois-Rivières	6.8 h	63%
Sydney	6.8 h	70%
Québec	6.7 h	65%
St. John's	6.6 h	77%
Saguenay	6.4 h	67%
Thunder Bay	6.4 h	70%
Corner Brook	6.3 h	76%
Winnipeg	6.1 h	60%
Kelowna	6.1 h	67%
Lethbridge	6.1 h	60%
Regina	5.9 h	63%

Darkness and moon, every night

Corner Brook, June 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
Tue Jun 1	6 h 34 min	1 h 9 min	5 h 21 min	3 h 57 min	10%
Wed Jun 2	6 h 32 min	57 min	5 h 50 min	3 h 56 min	4%
Thu Jun 3	6 h 30 min	43 min	6 h 29 min	3 h 55 min	1%
Fri Jun 4	6 h 28 min	24 min	6 h 28 min	3 h 54 min	0%
Sat Jun 5	6 h 27 min	0 min	5 h 41 min	3 h 8 min	2%
Sun Jun 6	6 h 25 min	0 min	4 h 53 min	2 h 20 min	8%
Mon Jun 7	6 h 24 min	0 min	4 h 17 min	1 h 45 min	15%
Tue Jun 8	6 h 22 min	0 min	3 h 51 min	1 h 19 min	24%
Wed Jun 9	6 h 21 min	0 min	3 h 30 min	58 min	35%
Thu Jun 10	6 h 20 min	0 min	3 h 12 min	40 min	46%
Fri Jun 11	6 h 19 min	0 min	2 h 55 min	24 min	57%
Sat Jun 12	6 h 18 min	0 min	2 h 38 min	7 min	68%
Sun Jun 13	6 h 17 min	0 min	2 h 20 min	0 min	77%
Mon Jun 14	6 h 16 min	0 min	1 h 58 min	0 min	85%
Tue Jun 15	6 h 16 min	0 min	1 h 31 min	0 min	92%
Wed Jun 16	6 h 15 min	0 min	57 min	0 min	96%
Thu Jun 17	6 h 15 min	0 min	13 min	0 min	99%
Fri Jun 18	6 h 14 min	0 min	0 min	0 min	100%
Sat Jun 19	6 h 14 min	0 min	15 min	15 min	99%
Sun Jun 20	6 h 14 min	0 min	48 min	48 min	96%
Mon Jun 21	6 h 14 min	0 min	1 h 12 min	1 h 12 min	92%
Tue Jun 22	6 h 14 min	0 min	1 h 32 min	1 h 32 min	86%
Wed Jun 23	6 h 14 min	0 min	1 h 48 min	1 h 48 min	78%
Thu Jun 24	6 h 15 min	0 min	2 h 3 min	2 h 3 min	70%
Fri Jun 25	6 h 15 min	0 min	2 h 17 min	2 h 17 min	61%
Sat Jun 26	6 h 16 min	0 min	2 h 32 min	2 h 32 min	51%
Sun Jun 27	6 h 16 min	0 min	2 h 48 min	2 h 48 min	41%
Mon Jun 28	6 h 17 min	0 min	3 h 7 min	3 h 7 min	31%
Tue Jun 29	6 h 18 min	0 min	3 h 33 min	3 h 33 min	21%
Wed Jun 30	6 h 19 min	0 min	4 h 7 min	3 h 44 min	13%

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

Questions

Can you see the northern lights in Corner Brook in June?: On dark, clear nights with enough activity. 30 of 30 nights at Corner Brook have civil darkness, and 8% of past June days reached Kp 5.
How dark is Corner Brook in June?: Corner Brook averages 6.3 hours of civil night a night in June 2027, from 6 h 34 min on the 1st to 6 h 19 min on the last night.
How cloudy is Corner Brook in June?: NASA POWER's 2001 to 2020 climatology gives Corner Brook's 1 degree cell 76% 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 Corner Brook?: By darkness and moon alone, Jun 1, with 3 h 57 min of moon-free darkness inside 10 PM to 2 AM at Corner Brook. Activity on that date will only be known hours ahead.
Is June or July better in Corner Brook?: By civil night times the clear share, June scores 1.5 hours at Corner Brook and July 1.9. 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.