Can you see the Milky Way in Oslo?

Not from Oslo itself — the sky there is bortle 8 — city sky, which washes the Milky Way out completely. Nordmarka or Østmarka, 25–40 km north/east — Bortle 5–6, reachable in under an hour.

When is the best time of year to stargaze in Oslo?

It depends on what you want to see, and the month-by-month table on this page ranks every month by hours of astronomical darkness, moon-free nights and ten years of cloud statistics for these exact coordinates.

How dark does it get in Oslo?

Oslo is at latitude 59.9°N, and this page computes the hours of true astronomical darkness — Sun more than 18° below the horizon — for every month of the year at that latitude.

Is tonight a good night in Oslo?

The SnapCosmos Night Engine scores tonight for these coordinates against the coming week using live cloud forecasts, Moon geometry and darkness, and returns a single go, wait or skip recommendation.

Norway · 59.91°N 10.75°E · 23 m

Stargazing in Oslo

A bright city with dark country half an hour away — and no real darkness in summer.

Sky quality: Bortle 8 — city sky
Clear nights a year: —
Best month overall: January
Milky Way core: Never above 10°

Only the Moon, the bright planets, the ISS and first-magnitude stars survive the light dome.

Key facts

Sky quality: Bortle 8 — city skyBortle class 8
Best Milky Way season: Core never rises usefully
Darkness quality: Good12.4 h of astronomical darkness at its darkest, in December
Best month for astrophotography: DecemberAbout 12.0 dark, moon-free, statistically clear nights
Coordinates: 59.9139, 10.752223 m elevation · Europe/Oslo

Questions answered on this page

Is tonight good for stargazing in Oslo?
Is the Milky Way visible from Oslo?
How many clear nights does Oslo get each year?
What is the best month for astrophotography in Oslo?
How many hours of true darkness does Oslo get each month?
How dark is the sky in Oslo on the Bortle scale?
When is the Milky Way core above the horizon from Oslo?
Should I drive somewhere darker than Oslo?

Oslo sits at almost 60° north, which decides most of what you can and cannot do here. Between late May and late July the Sun never drops 18° below the horizon, so astronomical darkness simply does not exist: the Milky Way, faint nebulae and long deep-sky exposures are off the table no matter how clear the sky is. From late August the nights reopen quickly, and by October the city gets more than eight hours of true darkness a night.

The sky over the city centre is Bortle 8 — the Moon, the bright planets, the ISS and bright meteors all survive it, everything fainter does not. The saving grace is geography: twenty to forty minutes north or east puts you in Nordmarka or the Østmarka forest, where the sky drops two Bortle classes and the Milky Way becomes visible to the naked eye on a clear autumn night.

If the sky here is too bright: Nordmarka or Østmarka, 25–40 km north/east — Bortle 5–6, reachable in under an hour.

Evergreen intelligence

The four questions people ask about Oslo

Computed from astronomy for these coordinates and a full year of Sun and Moon geometry — not copied from anywhere.

How many clear nights does Oslo have?: The cloud archive did not load for this location, so the clear-night count is unavailable right now. The darkness and Moon figures below are computed locally and remain valid.
What is the best month for the Milky Way in Oslo?: The galactic centre never rises more than 10° above the horizon from this latitude during astronomical darkness, so the core is not a realistic target here. The outer arms of the Milky Way are still visible on dark winter nights.
When is it darkest in Oslo?: December gives the most true darkness — an average of 12.4 hours a night with the Sun more than 18° below the horizon. At the other end, May, June, July have effectively no astronomical darkness at all: the Sun never drops far enough, so faint-target work is impossible regardless of the forecast.
When should I plan an astrophotography trip to Oslo?: December offers the most nights that are simultaneously dark, moon-free and statistically clear — about 12.0 of them. Book around the new Moon in that month and keep two spare nights; a single fixed date at any location is a coin toss.

Darkness calendar

Oslo month by month

Astronomical darkness and Moon geometry are computed for these coordinates. Cloud figures are ten-year ERA5 daily means. Rating combines darkness, moon-free nights and clear-sky odds.

Monthly sky conditions for Oslo (59.91, 10.75)
Month	Astro darkness	Moon-free dark nights	Avg cloud	Clear nights	Milky Way core	Rating
Jan	11.8 h	21	—	—	—	Good
Feb	10.0 h	18	—	—	—	Good
Mar	7.2 h	17	—	—	—	Good
Apr	2.3 h	12	—	—	—	Poor
May	None	0	—	—	—	Off-season
Jun	None	0	—	—	—	Off-season
Jul	None	0	—	—	—	Off-season
Aug	0.6 h	0	—	—	—	Off-season
Sep	5.7 h	16	—	—	—	Good
Oct	9.0 h	19	—	—	—	Good
Nov	11.3 h	21	—	—	—	Good
Dec	12.4 h	24	—	—	—	Good

"Moon-free dark nights" counts nights with at least two hours of astronomical darkness during which the Moon stays below the horizon. "Clear nights" is the share of days in the ERA5 record averaging under 30% cloud cover.

Practical

What Oslo is actually good for

Moon and planets
ISS passes
Bright meteor showers
Autumn and winter deep-sky trips out of town

For a decision on a specific night rather than a season, the SnapCosmos Night Engine scores tonight and the next six nights from these coordinates — . The method, weighting and known limits are documented on the Night Engine page, and its measured accuracy is published here.

FAQ

Common questions about the sky in Oslo

Can you see the Milky Way in Oslo?: Not from Oslo itself — the sky there is bortle 8 — city sky, which washes the Milky Way out completely. Nordmarka or Østmarka, 25–40 km north/east — Bortle 5–6, reachable in under an hour.
When is the best time of year to stargaze in Oslo?: It depends on what you want to see, and the month-by-month table on this page ranks every month by hours of astronomical darkness, moon-free nights and ten years of cloud statistics for these exact coordinates.
How dark does it get in Oslo?: Oslo is at latitude 59.9°N, and this page computes the hours of true astronomical darkness — Sun more than 18° below the horizon — for every month of the year at that latitude.
Is tonight a good night in Oslo?: The SnapCosmos Night Engine scores tonight for these coordinates against the coming week using live cloud forecasts, Moon geometry and darkness, and returns a single go, wait or skip recommendation.

Where these numbers come from

Every number on this page is computed for 59.9139, 10.7522 from the sources below. Nothing is copied from another site, and nothing is estimated by hand.

Ten-year cloud-cover climatology and historical night rankingERA5 reanalysisECMWF / Copernicus Climate Change Service
Hourly cloud cover, precipitation, humidity and visibility forecastsOpen-Meteo forecast and archive APIOpen-Meteo
Sun, Moon and planet positions, rise and set times, twilight phasesAstronomy Engine (VSOP87 / ELP2000 series)Don Cross, after the IMCCE and JPL analytical theories
Bortle class and sky-brightness context for each locationWorld Atlas of Artificial Night Sky Brightness (Falchi et al., 2016)Science Advances / Light Pollution Map
Definitions of civil, nautical and astronomical twilight, and lunar phase conventionsAstronomical Applications DepartmentUnited States Naval Observatory

Figures on this page last recomputed 2026-07-30.

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