Galway
53.273° N
9.051° W · 10 M
47
/100
PEAK
PEAK
Marginal, but there is a 1 hour gap from 00:00.
BEST WINDOW 00:00–01:00 · ASTRO DARK 00:00–04:00 · MOON 0%
Transparency
0.24
Seeing
0.97
Cloud
13%
Moon
0%
Fair tonight
Hour by hour, local to Galway. Colour encodes the score and nothing else; every other measurement is luminance.
Sky state
Lighter = daylight and twilight ·
unshaded = astronomical dark
Score
21
22
23
00
01
02
03
04
05
06
BEST WINDOW
Low cloud
36%
6%
6%
28%
63%
100%
96%
17%
5%
38%
Mid cloud
0%
0%
0%
1%
6%
17%
35%
42%
50%
27%
High cloud
12%
22%
8%
2%
2%
7%
62%
87%
54%
100%
Transparency
0.28
0.24
0.20
0.20
0.20
0.20
0.10
0.10
0.10
0.19
Seeing
0.72
0.77
0.85
0.89
0.95
0.97
0.93
0.93
0.93
0.96
Moon clear
0%
down
down
down
down
down
down
down
down
down
Inspect
Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.
Why this hour scored what it did
21
Clouded out · 0/100
Starting from
100
Cloud
−40
Transparency
−17
Seeing
−3
Moonlight
−0
Darkness
−40
Score
0
CLOUD 43%
LOW 36%
MID 0%
HIGH 12%
SUN 0.7°
MOON 2.8° / 0%
WIND 5
TEMP 19°
22
Clouded out · 5/100
Starting from
100
Cloud
−17
Transparency
−25
Seeing
−3
Moonlight
−0
Darkness
−50
Score
5
CLOUD 27%
LOW 6%
MID 0%
HIGH 22%
SUN -7.0°
MOON -5.3° / 0%
WIND 4
TEMP 18°
23
Fair · 37/100
Starting from
100
Cloud
−10
Transparency
−29
Seeing
−2
Moonlight
−0
Darkness
−22
Score
37
CLOUD 13%
LOW 6%
MID 0%
HIGH 8%
SUN -13.5°
MOON -12.2° / 0%
WIND 4
TEMP 18°
00
Fair · 47/100
Starting from
100
Cloud
−29
Transparency
−23
Seeing
−1
Moonlight
−0
Darkness
−0
Score
47
CLOUD 30%
LOW 28%
MID 1%
HIGH 2%
SUN -18.4°
MOON -17.6° / 0%
WIND 3
TEMP 17°
01
Poor · 23/100
Starting from
100
Cloud
−65
Transparency
−11
Seeing
−0
Moonlight
−0
Darkness
−0
Score
23
CLOUD 65%
LOW 63%
MID 6%
HIGH 2%
SUN -21.3°
MOON -21.2° / 0%
WIND 3
TEMP 17°
02
Clouded out · 0/100
Starting from
100
Cloud
−100
Transparency
−0
Seeing
−0
Moonlight
−0
Darkness
−0
Score
0
CLOUD 100%
LOW 100%
MID 17%
HIGH 7%
SUN -21.8°
MOON -22.7° / 0%
WIND 2
TEMP 18°
03
Clouded out · 1/100
Starting from
100
Cloud
−98
Transparency
−1
Seeing
−0
Moonlight
−0
Darkness
−0
Score
1
CLOUD 99%
LOW 96%
MID 35%
HIGH 62%
SUN -19.8°
MOON -22.0° / 0%
WIND 3
TEMP 18°
04
Clouded out · 14/100
Starting from
100
Cloud
−73
Transparency
−10
Seeing
−0
Moonlight
−0
Darkness
−3
Score
14
CLOUD 91%
LOW 17%
MID 42%
HIGH 87%
SUN -15.7°
MOON -19.0° / 0%
WIND 3
TEMP 17°
05
Clouded out · 7/100
Starting from
100
Cloud
−63
Transparency
−13
Seeing
−0
Moonlight
−0
Darkness
−16
Score
7
CLOUD 73%
LOW 5%
MID 50%
HIGH 54%
SUN -9.8°
MOON -14.2° / 0%
WIND 3
TEMP 17°
06
Clouded out · 0/100
Starting from
100
Cloud
−79
Transparency
−7
Seeing
−0
Moonlight
−0
Darkness
−14
Score
0
CLOUD 100%
LOW 38%
MID 27%
HIGH 100%
SUN -2.5°
MOON -7.8° / 0%
WIND 2
TEMP 17°
Excellent 75+
Good 55+
Fair 35+
Poor 15+
Not worth it
Seeing is estimated from surface wind — see
how we score.
Advertisement
Reserved
The next week of nights
Tonight · 12 Aug
47
Fair
MOON 0%
00:00–01:00
00:00–01:00
Tomorrow · 13 Aug
60
Good
MOON 2%
02:00–04:00
02:00–04:00
Friday · 14 Aug
54
Fair
MOON 6%
00:00–04:00
00:00–04:00
Saturday · 15 Aug
1
Clouded out
MOON 13%
Sunday · 16 Aug
23
Poor
MOON 21%
Monday · 17 Aug
6
Clouded out
MOON 30%
Tuesday · 18 Aug
27
Poor
MOON 39%
Advertisement
Reserved
Nearby locations
About this forecast
Conditions for Galway, Ireland are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and how dark the sky actually gets. Read the full method →