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Sunggal

3.576° N   98.615° E  ·  32 M
48 /100
PEAK
Marginal, but there is a 2 hours gap from 03:00.
BEST WINDOW 03:00–05:00 · ASTRO DARK 01:00–06:00 · MOON 0%
Transparency
0.23
Seeing
1.00
Cloud
55%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
01
02
03
04
05
06
07
29
31
48
38
31
1
0
BEST WINDOW
Low cloud
12%
3%
1%
0%
0%
2%
4%
Mid cloud
2%
3%
1%
3%
2%
1%
1%
High cloud
95%
95%
54%
77%
98%
94%
98%
Transparency
0.23
0.23
0.23
0.21
0.20
0.19
0.18
Seeing
1.00
0.99
1.00
1.00
1.00
1.00
1.00
Moon clear
down
down
down
down
down
down
0%
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
01 Poor · 29/100
Starting from
100
Cloud
−58
Transparency
−13
Seeing
−0
Moonlight
−0
Darkness
−0
Score
29
CLOUD 95% LOW 12% MID 2% HIGH 95% SUN -70.1° MOON -70.0° / 0% WIND 2 TEMP 26°
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
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

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 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 41

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

01030507
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 05:00
SET UP 01:30 · OBSERVE 02:00–06:00 · 4H · MEAN 44

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

01030507
TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 02:30 · OBSERVE 03:00–04:00 · 1H · MEAN 37

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

01030507
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 04:00
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

01030507
CLOUD NEVER DROPS BELOW 55%
SET UP 02:30 · OBSERVE 03:00–04:00 · 1H · MEAN 45

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

01030507
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 04:00
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The next week of nights

Tonight · 12 Aug
48
Fair
MOON 0%
03:00–05:00
Tomorrow · 13 Aug
38
Fair
MOON 1%
23:00–00:00
Friday · 14 Aug
40
Fair
MOON 5%
21:00–00:00
Saturday · 15 Aug
10
Clouded out
MOON 10%
Sunday · 16 Aug
26
Poor
MOON 19%
Monday · 17 Aug
26
Poor
MOON 28%
Tuesday · 18 Aug
28
Poor
MOON 37%
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About this forecast

Conditions for Sunggal, Indonesia 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 →