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San José del Guaviare

2.568° N   72.640° W  ·  302 M
61 /100
PEAK
Worth setting up — 4 hours of workable sky from 01:00.
BEST WINDOW 01:00–05:00 · ASTRO DARK 20:00–05:00 · MOON 1%
Transparency
0.32
Seeing
1.00
Cloud
2%
Moon
1%

Good tonight

Hour by hour, local to San José del Guaviare. 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
28
2
5
10
7
18
35
50
61
56
38
0
BEST WINDOW
Low cloud
1%
1%
48%
51%
6%
2%
0%
0%
0%
0%
2%
0%
0%
Mid cloud
18%
24%
98%
75%
93%
100%
82%
49%
25%
12%
17%
2%
1%
High cloud
77%
50%
13%
9%
4%
2%
6%
1%
0%
0%
0%
0%
11%
Transparency
0.32
0.21
0.19
0.20
0.20
0.26
0.32
0.10
0.10
0.21
0.18
0.18
0.18
Seeing
1.00
1.00
1.00
1.00
1.00
0.86
0.93
0.92
1.00
0.97
1.00
1.00
1.00
Moon clear
0%
down
down
down
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
18 Clouded out · 0/100
Starting from
100
Cloud
−52
Transparency
−13
Seeing
−0
Moonlight
−0
Darkness
−35
Score
0
CLOUD 81% LOW 1% MID 18% HIGH 77% SUN -0.3° MOON 4.1° / 0% WIND 1 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
Conditions for planets and the Moon

Seeing is everything. Darkness and moonlight barely matter, and a hazy, humid night that ruins deep-sky work is often the steadiest night of the year for planetary detail.

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 00:30 · OBSERVE 01:00–05:00 · 4H · MEAN 51

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

18202200020406
CLOUD BREAKS 01:00TWILIGHT BEGINS 05:00
SET UP 00:30 · OBSERVE 01:00–06:00 · 5H · MEAN 66

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

18202200020406
CLOUD BREAKS 01:00TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 01:30 · OBSERVE 02:00–05:00 · 3H · MEAN 51

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

18202200020406
CLOUD BREAKS 02:00TWILIGHT BEGINS 05:00
SET UP 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 44

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

18202200020406
TWILIGHT BEGINS 05:00
SET UP 01:30 · OBSERVE 02:00–05:00 · 3H · MEAN 58

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

18202200020406
CLOUD BREAKS 02:00TWILIGHT BEGINS 05:00
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The next week of nights

Tonight · 12 Aug
61
Good
MOON 0%
01:00–05:00
Tomorrow · 13 Aug
57
Good
MOON 3%
20:00–02:00
Friday · 14 Aug
45
Fair
MOON 7%
21:00–02:00
Saturday · 15 Aug
12
Clouded out
MOON 15%
Sunday · 16 Aug
16
Poor
MOON 23%
Monday · 17 Aug
28
Poor
MOON 32%
Tuesday · 18 Aug
59
Good
MOON 42%
01:00–02:00
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About this forecast

Conditions for San José del Guaviare, Colombia 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 →