GoodSeeing
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Papeete

-17.535° S   149.568° W  ·  42 M
49 /100
PEAK
Marginal, but there is a 11 hours gap from 19:00.
BEST WINDOW 19:00–06:00 · ASTRO DARK 20:00–06:00 · MOON 1%
Transparency
0.47
Seeing
0.41
Cloud
16%
Moon
1%

Fair tonight

Hour by hour, local to Papeete. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
18
19
20
21
22
23
00
01
02
03
04
05
06
0
49
37
47
45
40
49
37
39
36
44
36
0
BEST WINDOW
Low cloud
17%
16%
34%
20%
16%
23%
14%
24%
27%
32%
21%
32%
13%
Mid cloud
2%
1%
2%
1%
1%
4%
2%
3%
8%
3%
4%
2%
2%
High cloud
0%
0%
0%
0%
0%
0%
1%
14%
2%
0%
0%
2%
1%
Transparency
0.50
0.47
0.43
0.43
0.41
0.41
0.44
0.41
0.42
0.40
0.41
0.37
0.37
Seeing
0.15
0.15
0.18
0.19
0.15
0.18
0.26
0.15
0.31
0.31
0.41
0.26
0.30
Moon clear
0%
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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
18 Clouded out · 0/100
Starting from
100
Cloud
−18
Transparency
−16
Seeing
−14
Moonlight
−0
Darkness
−51
Score
0
CLOUD 18% LOW 17% MID 2% HIGH 0% SUN -3.6° MOON 3.5° / 0% WIND 12 TEMP 25°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight's limiting factor
What the GoodSeeing score actually measures

One number from 0 to 100 per hour, combining cloud, transparency, seeing, moonlight and darkness. Cloud gates everything else — no amount of steady, dark air rescues an overcast sky.

What are you doing tonight?

The same forecast, weighted for the target. Planetary work barely cares about moonlight; long exposures die on high cloud a visual observer would never notice.

SET UP 18:30 · OBSERVE 19:00–06:00 · 11H · MEAN 47

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

18202200020406
ASTRONOMICAL DARK FROM 19:00TWILIGHT BEGINS 06:00
SET UP 20:30 · OBSERVE 21:00–01:00 · 4H · MEAN 41

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

18202200020406
CLOUD RETURNS 01:00SEEING STAYS SOFT THROUGHOUTMOONLIGHT IGNORED FOR THIS TARGET
SET UP 18:30 · OBSERVE 19:00–06:00 · 11H · MEAN 47

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

18202200020406
ASTRONOMICAL DARK FROM 19:00TWILIGHT BEGINS 06:00
SET UP 20:30 · OBSERVE 21:00–23:00 · 2H · MEAN 40

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

18202200020406
SET UP 18:30 · OBSERVE 19:00–06:00 · 11H · MEAN 50

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

18202200020406
ASTRONOMICAL DARK FROM 19:00TWILIGHT BEGINS 06:00
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The next week of nights

Tonight · 12 Aug
49
Fair
MOON 1%
19:00–06:00
Tomorrow · 13 Aug
65
Good
MOON 4%
19:00–01:00
Friday · 14 Aug
48
Fair
MOON 8%
02:00–03:00
Saturday · 15 Aug
75
Excellent
MOON 17%
20:00–21:00
Sunday · 16 Aug
69
Good
MOON 25%
20:00–21:00
Monday · 17 Aug
52
Fair
MOON 35%
20:00–21:00
Tuesday · 18 Aug
48
Fair
MOON 44%
02:00–03:00
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Nearby locations

About this forecast

Conditions for Papeete, French Polynesia 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 →