What can I see in tonight's sky?

SnapCosmos combines your location, the local weather forecast and precise astronomical calculations to tell you what's actually visible tonight — the Moon, bright planets, the ISS, meteor showers in season, and how dark and clear the sky will be.

Do I need an account or an app?

No. SnapCosmos runs entirely in your browser. Share your location once and every page tailors itself to your night sky. Nothing is stored on our servers.

How accurate is the forecast?

Astronomy — Moon phase, planet positions, twilight times — is calculated to the minute. Weather comes from Open-Meteo's high-resolution model and is refreshed hourly. Aurora and space-weather data comes from NOAA SWPC.

Which locations does it work for?

Any location on Earth. Enter a city or coordinates, or share your GPS. All times, twilight, Moon and planet visibility adjust to your latitude, longitude and time zone automatically.

Oslo, Norway·Thursday, August 27

Tonight's Sky Guide for Oslo, Norway

Tonight: Good — 69/100

GO TONIGHT

Excellent conditions between 00:00 and 01:00.

Take the window from 00:00 to 01:00 — that's the whole of tonight's chance.

Best viewing window00:00–01:00the sky holds clear, though the Moon stays bright, and darkness is complete

Why this is the call

Broken cloud, 67% night average
Sky opens after 00:00
Bright Moon (100%) washes out faint objects
Only 2.6 h of full darkness

Confidence66%

Reasonably solid, but conditions could shift.

Forecast thins out before dawn
Cloud cover is unsettled
The call sits right on the tipping point
Moon and darkness are calculated, not forecast

Go · Tonight Score69/ 100 · Good

Where it sits

Face north first — the compass shows where to turn from there.

Build tonight's plan

Tonight vs. the next seven nights · Oslo, Norway

★★★★★

Why the verdict is go tonight

Tonight is the best night this week. Waiting won't improve it.

Tonight

Good

In one sentence

Tonight is the best night this week with 67% cloud and the Moon 100% lit. Waiting for a clearer night won't gain you much.

Next seven nights

Why?

☁Cloud cover (night average)
Tonight67%
🌙Moon brightness
Tonight100%
🌑True darkness
Tonight2.6 h
🌌Milky Way
TonightNot tonight
🪐Planet visibility
TonightFair
🟢Aurora chance
TonightPoor

Best things to photograph tonight

Planets
3 planets well above the haze
★★★★★
Moon
full and flat — bright, but craters lose their shadows
★★★★★
ISS
pass reaches 20° above the horizon
★★★★★
Aurora
latitude and darkness allow it — activity decides
★★★★★
Star trails
cloud breaks the trail
★★★★★

Build tonight's plan →

For your goal · the Milky Way

This refines the verdict above for what you personally came out for. It never replaces tonight’s overall sky verdict.

NO GOOD MILKY WAY NIGHT THIS WEEK

Nothing in the next seven nights is genuinely good for the Milky Way at this location. Save the effort.

Night conditions score 27/100 at 67% cloud — more cloud than your “mostly clear” threshold. Milky Way itself rates 0/5 tonight — good conditions, wrong night for that target.

I’m here to

Sky tolerance

I’m willing to drive

Reliability

Forecast confidence, signal by signal

83%

Overall

Solid overall — Milky Way is the weakest link.

Clouds89%
High-resolution hourly forecast — 10 hourly samples across the night; cloud cover is unsettled.
Moon100%
Phase, rise, set and altitude come from an ephemeris. Not a forecast — arithmetic.
Darkness100%
Solar altitude computed for your exact coordinates and date.
ISS passes99%
SGP4 propagation from current orbital elements, computed on our own servers.
Milky Way77%
Faint targets also depend on haze, humidity aloft and transparency, which no public model forecasts.

SnapCosmos Night Engine

If you only have one hour tonight

Use 00:00–01:00 on planets.

Spend the hour between 00:00–01:00 on planets, looking east, halfway up — 3 planets well above the haze.

Best time00:00–01:00

Where to lookEast, halfway up

DifficultyEasy

For this hourMarginal

MarginalBinoculars show the disc; a small telescope shows the detailPlanets guide

SnapCosmos's own recommendation engine: it scores every night for your observing goal from hourly forecasts, exact ephemerides and ten years of reanalysis, then returns one instruction with the evidence behind it.

Engine: SnapCosmos Night Engine v1.0
Confidence: 66% · Reasonably solid, but conditions could shift.
Updated: — local · weather refreshed hourly
Sources: Open-Meteo forecast & ERA5 archive, NOAA SWPC, CelesTrak TLE, astronomy-engine
Method: How the SnapCosmos Night Engine reaches a verdict

Astronomical darkness: 2.6h
Moon: 100%
Cloud cover: 67%

The night at a glance

Astro darkMoon upCloud cover

Tonight in detail for Oslo, Norway

Cloud begins to break after 00:00 and improves progressively later, the overnight low sits near 16 °C (60 °F) — a light layer is enough. The Moon is 100% full moon — excellent to observe in its own right, but its light seriously limits the Milky Way, meteor counts and deep-sky contrast. True astronomical darkness holds for 2.6 hours, from 00:00 to 02:39.

If you have one hour tonight, spend it between 00:00 and 01:00 — that's when everything lines up best. Binoculars will show real detail on the biggest planets tonight; a small telescope opens the door completely. Cloud begins to break after 00:00; check the hourly forecast for when it becomes mostly clear.

What tonight is good for

Tonight suits nothing in particular.

Why this verdict

From Oslo, Norway (59.91°N, 10.75°E) on 27 August 2026, cloud begins to break after 00:00 and improves progressively afterward.

Cloud begins to break after 00:00 and improves progressively afterward.

What decides tonight

Cloud begins to break after 00:00 and improves progressively. Treat that as a trend, not a promise of instantly clear sky.

Supporting and opposing forces

A bright Moon holds through the night, so plan around it or lean into lunar observing. Darkness is short — 2.6 hours — so the good window is narrow. Also on the schedule: between the clouds, Mars is the one worth catching. If you only have one hour, the window between 00:00 and 01:00 is the pick.

How much to trust this

Confidence is solid but not perfect (66%): Reasonably solid, but conditions could shift. Expect the verdict to hold, but keep half an eye on the actual sky before you commit — small forecast shifts can trim the good window.

What to actually do

The practical version: dress warm, step outside between 00:00 and 01:00, and let your eyes adapt for at least fifteen minutes. That's when tonight pays back the effort.

Why tonight

Tonight

Good

Tonight

Good

Excellent conditions between 00:00 and 01:00.

Why this is the call

Broken cloud, 67% night average
Sky opens after 00:00
Bright Moon (100%) washes out faint objects
Only 2.6 h of full darkness

Full timeline

Also in the sky tonight

Explore more

A trusted companion for the night sky

SnapCosmos is built around one question: is tonight worth going outside? For your exact location, we combine live weather, precise astronomy and geomagnetic data into a single honest verdict — plus everything you need to plan the night: the Moon phase and rise/set times, which planets are visible, upcoming ISS passes, active meteor showers, the aurora forecast and the exact minute true darkness begins.

No accounts, no tracking, no clutter. Just clear answers for anyone who has ever wondered whether it's worth stepping outside tonight.

Hour by hour

Tonight's sky, hour by hour

How the sky is expected to behave over Oslo, Norway through the night — cloud cover, temperature and what each hour realistically allows.

Hourly forecast for tonight, from local weather and astronomy
Time	Cloud	Precip	Temp (°C)	Wind (km/h)	What you can see
21:00	90%	—	21°C	13 km/h	Overcast, nothing visible
22:00	73%	—	19°C	3 km/h	Moon and planets through brief gaps
23:00	54%	—	19°C	9 km/h	Breaks in the cloud — brighter stars
00:00	14%	—	18°C	10 km/h	Clear — planets, the Moon and bright meteors
01:00	45%	—	17°C	10 km/h	Breaks in the cloud — brighter stars
02:00	73%	—	17°C	11 km/h	Moon and planets through brief gaps
03:00	89%	—	16°C	12 km/h	Moon and planets through brief gaps
04:00	98%	—	16°C	13 km/h	Overcast, nothing visible
05:00	99%	—	16°C	10 km/h	Overcast, nothing visible
06:00	98%	—	16°C	12 km/h	Overcast, nothing visible

Seven nights ahead

This week at a glance

A quick planner for the next week of nights — moon phase, dark hours, and an overall rating so you can pick your best night at a glance.

Astronomical outlook for the next seven nights from Oslo, Norway
Date	Moon	Phase	Moonrise	Moonset	Dark hours	Overall
Aug 27	100%	Full Moon	20:24	06:10	2.6 h	★★☆☆☆
Aug 28	100%	Full Moon	20:24	07:40	2.8 h	★★☆☆☆
Aug 29	98%	Full Moon	20:23	09:11	3.1 h	★★☆☆☆
Aug 30	94%	Waning Gibbous	20:23	10:45	3.3 h	★★☆☆☆
Aug 31	88%	Waning Gibbous	20:23	12:24	3.4 h	★★☆☆☆
Sep 1	80%	Waning Gibbous	20:25	—	3.7 h	★★☆☆☆
Sep 2	70%	Waning Gibbous	20:29	14:09	3.8 h	★★★☆☆

This season

The August sky from Oslo, Norway

At 59.9°N, Oslo, Norway sits in the northern hemisphere, and August nights are short and often never reach true astronomical darkness. The galactic core sits due south after dusk — the year's best Milky Way window from mid-northern latitudes.

What to look for this month

The Milky Way core hangs south — M8, M17, M20, M22 are all one binocular sweep apart. The Perseids peak around 12 August — the year's most-watched shower.

How the sky changes through the month

Stars rise about four minutes earlier each night, so a constellation on the eastern horizon at 22:00 today will be a full hour higher by the end of August. The Moon runs through a full cycle roughly every 29 days — plan deep-sky viewing for the week either side of new moon, and enjoy the Moon itself around first quarter and full.

Questions answered on this page

Is tonight good for stargazing in Oslo, Norway?
Is the Milky Way visible tonight from here?
Will the Moon ruin tonight, and when does it set?
When does astronomical darkness begin tonight?
Is tonight the best night this week, or should I wait?
Should I drive somewhere darker tonight?
How cloudy will it be during the observing window?
What should I point a camera at tonight?

Why we are different

Most sky sites answer "what are the conditions". We answer "should I go".

The difference is not the data — everyone can fetch a forecast. It is what happens after the data arrives.

A conventional sky-conditions site compared with the SnapCosmos Night Engine
A typical sky site	SnapCosmos
Shows the weather forecast	Turns it into one instruction: go, wait or skip
Shows the Moon phase	Explains what that phase actually costs you tonight
Shows cloud cover	Ranks tonight against ten years of nights at your coordinates
Shows tonight	Compares tonight with the next seven nights and names the better one
Generic for everyone	Weighted by what you came to see, and how far you will drive
States conditions	States a confidence percentage and what would change it
No published accuracy	Publishes its measured agreement, goal by goal, including where it is weak

Where these numbers come from

Everything on this page is computed live for Oslo, Norway — nothing is cached copy or hand-written seasonal text. The engine that turns these inputs into one recommendation is documented, versioned andmachine-readable.

Hourly cloud cover, precipitation, humidity and visibility forecastsOpen-Meteo forecast and archive APIOpen-Meteo
Ten-year cloud-cover climatology and historical night rankingERA5 reanalysisECMWF / Copernicus Climate Change Service
Sun, Moon and planet positions, rise and set times, twilight phasesAstronomy Engine (VSOP87 / ELP2000 series)Don Cross, after the IMCCE and JPL analytical theories
ISS orbital elements (TLE), propagated locally with SGP4CelesTrak / NORAD two-line elementsCelesTrak, from US Space Force tracking data
Geomagnetic activity (Kp) and aurora forecastingSpace Weather Prediction CenterNOAA

Figures on this page last recomputed 2026-08-27.

Everything else in the sky tonight

Every SnapCosmos page is computed live for your exact location. Follow any card for a full, honest read on that part of the sky.