GoodSeeing
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Camamu

-13.947° S   39.103° W  ·  16 M
51 /100
PEAK
Marginal, but there is a 8 hours gap from 20:00.
BEST WINDOW 20:00–04:00 · ASTRO DARK 19:00–05:00 · MOON 0%
Transparency
0.46
Seeing
0.88
Cloud
26%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
17
18
19
20
21
22
23
00
01
02
03
04
05
06
0
5
23
51
51
42
38
43
44
39
44
30
28
0
BEST WINDOW
Low cloud
49%
53%
65%
25%
25%
39%
44%
36%
34%
41%
34%
56%
34%
21%
Mid cloud
3%
4%
5%
2%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.52
0.46
0.44
0.44
0.42
0.40
0.37
0.35
0.31
0.29
0.27
0.27
0.27
0.27
Seeing
0.48
0.55
0.58
0.53
0.56
0.60
0.61
0.66
0.69
0.74
0.81
0.84
0.88
0.90
Moon clear
0%
down
down
down
down
down
down
down
down
down
down
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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
17 Clouded out · 0/100
Starting from
100
Cloud
−51
Transparency
−10
Seeing
−5
Moonlight
−0
Darkness
−35
Score
0
CLOUD 49% LOW 49% MID 3% HIGH 0% SUN 6.2° MOON 8.8° / 0% WIND 7 TEMP 24°
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 19:30 · OBSERVE 20:00–04:00 · 8H · MEAN 47

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

17192123010305
CLOUD BREAKS 20:00CLOUD RETURNS 04:00
SET UP 19:30 · OBSERVE 20:00–06:00 · 10H · MEAN 46

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

17192123010305
CLOUD BREAKS 20:00TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 19:30 · OBSERVE 20:00–04:00 · 8H · MEAN 45

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

17192123010305
CLOUD BREAKS 20:00CLOUD RETURNS 04:00
SET UP 19:30 · OBSERVE 20:00–22:00 · 2H · MEAN 41

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

17192123010305
CLOUD BREAKS 20:00
SET UP 19:30 · OBSERVE 20:00–04:00 · 8H · MEAN 47

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

17192123010305
CLOUD BREAKS 20:00CLOUD RETURNS 04:00
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The next week of nights

Tonight · 12 Aug
51
Fair
MOON 0%
20:00–04:00
Tomorrow · 13 Aug
74
Good
MOON 3%
19:00–05:00
Friday · 14 Aug
71
Good
MOON 7%
19:00–04:00
Saturday · 15 Aug
51
Fair
MOON 15%
21:00–22:00
Sunday · 16 Aug
42
Fair
MOON 23%
21:00–22:00
Monday · 17 Aug
43
Fair
MOON 32%
21:00–22:00
Tuesday · 18 Aug
38
Fair
MOON 42%
21:00–22:00
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Nearby locations

About this forecast

Conditions for Camamu, Brazil 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 →