Alice Springs forecast › Weekend planner

Eight-week planning horizon

Choose your observing weekend

Alice Springs · ranked by total moonless dark hours across Friday and Saturday. Seasonal history is context, not the chance of clear weather on those dates.

Brightened sky

Site darkness stays separate from the weather and the scheduling order.

20.7–21.2 mag/arcsec²

Next seven nights in detail · Moonless calendar · Milky Way timing

Choose a planet and find its observing times →

Moonless time rank 1

6 Nov – 7 Nov

16.3h moonless / 16.7h astronomical darkness across both nights

November seasonal context
13.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

8.0h moonless · Moon 7% lit
Longest moonless stretch: 20:20–04:20

Forecast cloud range: 1–67% at 2 available dark-time samples. Not full-night coverage or a probability.

Saturday

8.3h moonless · Moon 3% lit
Longest moonless stretch: 20:20–04:40

Forecast cloud range: 20–38% at 2 available dark-time samples. Not full-night coverage or a probability.

Moonless time rank 2

11 Dec – 12 Dec

13.0h moonless / 14.7h astronomical darkness across both nights

December seasonal context
11.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

7.0h moonless · Moon 6% lit
Longest moonless stretch: 21:20–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

6.0h moonless · Moon 11% lit
Longest moonless stretch: 22:20–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Moonless time rank 3

4 Dec – 5 Dec

12.7h moonless / 15.3h astronomical darkness across both nights

December seasonal context
11.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

6.0h moonless · Moon 18% lit
Longest moonless stretch: 20:40–02:40

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

6.7h moonless · Moon 11% lit
Longest moonless stretch: 20:40–03:20

Weather not available for this night. Geometry only; recheck nearer departure.

Moonless time rank 4

13 Nov – 14 Nov

10.3h moonless / 16.0h astronomical darkness across both nights

November seasonal context
13.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

5.7h moonless · Moon 17% lit
Longest moonless stretch: 22:40–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

4.7h moonless · Moon 25% lit
Longest moonless stretch: 23:40–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Moonless time rank 5

18 Dec – 19 Dec

5.0h moonless / 14.7h astronomical darkness across both nights

December seasonal context
11.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

2.7h moonless · Moon 66% lit
Longest moonless stretch: 01:40–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

2.3h moonless · Moon 76% lit
Longest moonless stretch: 02:00–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Moonless time rank 6

27 Nov – 28 Nov

3.7h moonless / 15.3h astronomical darkness across both nights

November seasonal context
13.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

1.3h moonless · Moon 88% lit
Longest moonless stretch: 20:40–22:00

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

2.3h moonless · Moon 80% lit
Longest moonless stretch: 20:40–23:00

Weather not available for this night. Geometry only; recheck nearer departure.

Moonless time rank 7

20 Nov – 21 Nov

2.0h moonless / 15.3h astronomical darkness across both nights

November seasonal context
13.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

1.3h moonless · Moon 81% lit
Longest moonless stretch: 03:00–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

0.7h moonless · Moon 88% lit
Longest moonless stretch: 03:40–04:20

Weather not available for this night. Geometry only; recheck nearer departure.

Moonless time rank 8

25 Dec – 26 Dec

0.7h moonless / 14.7h astronomical darkness across both nights

December seasonal context
11.3 usable nights/month on average · 2005–2024. Historical regional cloud and darkness, not this weekend’s weather odds.

Night-by-night timing & conditions

Friday

0.0h moonless · Moon 97% lit
No moonless dark window

Weather not available for this night. Geometry only; recheck nearer departure.

Saturday

0.7h moonless · Moon 91% lit
Longest moonless stretch: 21:00–21:40

Weather not available for this night. Geometry only; recheck nearer departure.

How to use this planner

Choose a weekend with enough moonless time, then check the weather and target outlook before travelling. Times use Australia/Darwin and approximately 20-minute geometry samples. Friday and Saturday are ranked together; hours need not form one continuous window.

The regional NASA climate baseline counts nights with at least three hours of astronomical darkness and mean nighttime cloud at or below 30%. It does not measure telescope seeing or guarantee clear skies. No weather probabilities are inferred from monthly averages. Longer-lead forecasts have coarser sampling.

Full seasonal history and definitions →