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Lumamē

10.250° N   37.933° E  ·  2452 M
10 /100
PEAK
Cloud will spoil it. Not a night for the telescope.
NO USABLE WINDOW · ASTRO DARK 21:00–06:00 · MOON 0%
Transparency
0.19
Seeing
1.00
Cloud
70%
Moon
0%

Clouded out tonight

Hour by hour, local to Lumamē. 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
10
3
2
0
7
7
5
5
10
0
Low cloud
27%
52%
93%
100%
29%
56%
65%
64%
57%
52%
Mid cloud
60%
84%
14%
67%
68%
16%
12%
1%
9%
24%
High cloud
73%
84%
84%
95%
93%
88%
75%
81%
23%
50%
Transparency
0.10
0.10
0.16
0.10
0.18
0.18
0.17
0.18
0.19
0.19
Seeing
0.91
0.93
0.99
1.00
1.00
1.00
1.00
1.00
1.00
1.00
Moon clear
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
21 Clouded out · 10/100
Starting from
100
Cloud
−84
Transparency
−6
Seeing
−0
Moonlight
−0
Darkness
−0
Score
10
CLOUD 92% LOW 27% MID 60% HIGH 73% SUN -31.4° MOON -29.5° / 0% WIND 3 TEMP 13°
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.

NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 70%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 70%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 70%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 70%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 70%
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The next week of nights

Tonight · 12 Aug
10
Clouded out
MOON 0%
Tomorrow · 13 Aug
50
Fair
MOON 2%
00:00–04:00
Friday · 14 Aug
29
Poor
MOON 6%
Saturday · 15 Aug
38
Fair
MOON 13%
03:00–04:00
Sunday · 16 Aug
58
Good
MOON 21%
03:00–04:00
Monday · 17 Aug
54
Fair
MOON 30%
03:00–04:00
Tuesday · 18 Aug
39
Fair
MOON 39%
03:00–04:00
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Nearby locations

About this forecast

Conditions for Lumamē, Ethiopia 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 →