Coordinate model
Tromsø is computed at 69.65°N, 18.96°E in Europe/Oslo. The coordinate, not the country or timezone alone, controls the curve.
Daylight curve
Daylight in Tromsø, 2026
69.65°N · 18.96°E. Each vertical bar is one day of the year — bar height shows total daylight minutes.
Daylight values are generated from the city coordinates and solar-position math during the page revalidation window.
Longest day
24.0h
2026-05-18
Shortest day
0.0h
2026-01-01
Average
12.6h
Δ extreme
6h
12h
18h
24h
J
F
M
A
M
J
J
A
S
O
N
D
Today's solar window
Sun and twilight in Tromsø
Sunrise
8:31 AM
Solar noon
11:27 AM
Sunset
2:24 PM
Day length
5h 53m
Civil twilight (-6°)
7:14 AM to 3:41 PM
Nautical twilight (-12°)
5:59 AM to 4:55 PM
Astronomical twilight (-18°)
4:50 AM to 6:05 PM
Golden hour
— · —
Blue hour55m total
7:14 AM to 7:41 AM · 3:13 PM to 3:41 PM
Seasonal checkpoints
Solstice and equinox anchors
March equinox
Mar 20
12h 18m
June solstice
Jun 21
24h
September equinox
Sep 22
12h 23m
December solstice
Dec 21
0h
Full-year edge cases: 69 polar-day entries and 48 polar-night entries in the 2026 curve.
City solar dossier
Tromsø daylight facts that are not generic
These rows bind the page to Tromsø's coordinates, local timezone, annual daylight spread, twilight availability, and peer-city curve rather than a reusable sunrise template.
Annual daylight spread
24h between Jan 1 (0h) and May 18 (24h).
Local-date snapshot
Today resolves to sunrise 8:31 AM, solar noon 11:27 AM, and sunset 2:24 PM.
Photographer signal
no usable golden-hour window today; blue hour today 55m; longest golden-hour day May 5 — 7h 57m
Darkness and white-night risk
191 days include astronomical darkness; 107 civil white-night days and 174 astronomical white-night days are modeled in 2026.
Best comparison anchors
Reykjavík (17h 2m swing); Anchorage (13h 55m swing); Stockholm (12h 32m swing); Moscow (10h 33m swing); Ushuaia (10h 8m swing)
Solar evidence pack
Why this Tromsø sun page is retained
This audit ties the page to a retained city route, exact coordinates, local timezone, a full-year daylight curve, twilight thresholds, and peer-city comparisons.
12/12checks
Retained city route
pass/sun/tromso/ resolves to Tromsø, Norway; the route is generated only from the retained SUN_CITIES list.
Coordinate precision
pass69.65°N, 18.96°E; latitude band polar latitude band; Northern Hemisphere.
Local timezone
passEurope/Oslo is used to anchor today's local sunrise, sunset, solar noon, and twilight windows.
Full-year daylight curve
pass365 daily daylight rows were computed for 2026; expected 365.
Annual extremes
passLongest May 18 (24h), shortest Jan 1 (0h), average 12h 35m.
Seasonal momentum
passFastest gain May 18 (+52m from the previous day); fastest loss Jul 26 (-59m from the previous day); closest 12-hour day Mar 18 at 12h 1m (+1m from 12h).
Local-day solar snapshot
passToday: sunrise 8:31 AM, solar noon 11:27 AM, sunset 2:24 PM.
Twilight ladder
passGolden May 5 — 7h 57m; blue Aug 14 — 2h 51m; civil Nov 27 — 5h 36m; astronomical night Dec 21 — 13h 32m.
Darkness and white-night model
pass191 days with astronomical darkness; 107 civil white-night days; 174 astronomical white-night days.
Seasonal checkpoints
passMarch equinox: 12h 18m; June solstice: 24h; September equinox: 12h 23m; December solstice: 0h
Peer curve comparison
passReykjavík (17h 2m); Anchorage (13h 55m); Stockholm (12h 32m); Moscow (10h 33m); Ushuaia (10h 8m)
Method and citation boundary
passSolar thresholds are NOAA-style; timezone rules use IANA. The page is a planning model, not a legal almanac or obstruction-aware site survey.
Practical read
How to use this solar profile
Photography
No standard golden-hour window today
Best annual golden-hour day: May 5 — 7h 57m. Blue-hour total today: 55m.
Astronomy
191 true-darkness days
Longest astronomical-night entry: Dec 21 — 13h 32m. Use local cloud cover and moon phase separately.
Outdoor routine
5h 53m daylight today
Sunrise 8:31 AM and sunset 2:24 PM are the practical day-boundaries for school runs, work windows, and outdoor activity.
Seasonal planning
24h annual swing
June average 24h; December average 0h. This is the year-scale gap to check before travel or outdoor scheduling.
Travel comparison
10 retained peer curves
Tromsø's closest daylight-pattern peers here include Reykjavík (17h 2m annual swing), Anchorage (13h 55m annual swing), Stockholm (12h 32m annual swing), Moscow (10h 33m annual swing).
Civil-light risk
107 civil white-night days
Civil twilight uses -6°. White-night counts matter because dawn/dusk phases stop behaving like ordinary morning/evening windows.
Calculation boundaries
What this model can and cannot promise
What this model includes
Latitude, longitude, solar elevation thresholds, atmospheric-refraction sunrise/sunset convention, Europe/Oslo local formatting, and a 365-day sweep for 2026.
What this model excludes
Mountains, skyline obstruction, sea horizon differences, weather, smoke, cloud cover, local legal definitions, aviation rules, and observer elevation.
When to verify elsewhere
Use official observatory, aviation, maritime, legal, or local almanac sources for high-stakes operations; this page is designed for planning, comparison, and general reference.
Why city pages differ
Two cities in Europe/Oslo can still have different daylight and twilight curves because the coordinate pair, especially latitude, drives the result.
Seasonal daylight fingerprint
How daylight changes through 2026
These values are derived from the same 365-day curve: threshold counts, fastest day-to-day change, the closest 12-hour balance, and monthly daylight averages.
14h+ daylight days
163
Days at or above fourteen hours of sun.
10h-or-less days
146
Short-day entries at ten hours or below.
Fastest gain
May 18 (+52m from the previous day)
Fastest loss
Jul 26 (-59m from the previous day)
Closest 12-hour balance
Mar 18 at 12h 1m (+1m from 12h)
Brightest month
June average 24h
Shortest month
December average 0h
Year-round photographer planning
Golden & blue hour across 2026
Combined morning + evening windows, computed for every UTC day of the year.
- Longest golden hour day
- May 5 — 7h 57m
- Shortest non-zero golden hour day
- Sep 20 — 3h 52m
- Year-round daily average
- 4h 38m
- Longest blue hour day
- Aug 14 — 2h 51m
- Blue-hour daily average
- 1h 7m
- Longest civil twilight
- Nov 27 — 5h 36m
- Civil twilight average
- 2h 36m
- Longest astronomical night
- Dec 21 — 13h 32m
- Days with true darkness
- 191 / 365
White-night counts
107 days without civil-twilight bound, 143 without nautical-twilight bound, 174 without astronomical-twilight bound. On those days the sun never gets low enough for the named phase to occur, so true darkness disappears for that stretch.
Twilight phases reference
What each phase means
Solar elevation thresholds used on this page. All angles are measured from the true horizon at the city coordinate.
Sunrise / sunset · -0.833°
The sun's upper edge crosses the horizon. The negative value is atmospheric refraction (~34') plus the apparent solar disc radius (~16') — what almanacs call "official" sunrise/sunset.
Golden hour · 6° to -4°
Warm, low-angle light photographers and cinematographers plan around. Two windows per day — one in the morning, one in the evening.
Blue hour · -4° to -6°
Sky takes on deep, even blues; useful for cityscape photography because artificial lights and ambient sky balance.
Civil twilight · -6°
Brightest natural objects are still visible; outdoor activities don't need artificial light. Used in many legal definitions of dawn/dusk.
Nautical twilight · -12°
Horizon is just visible at sea, allowing celestial navigation; named for sailors taking sextant fixes.
Astronomical twilight · -18°
Sky is dark enough for deep-sky observation. After astronomical dusk and before astronomical dawn is when astrophotographers shoot.
Solar planning depth
What the Tromsø daylight curve means
This section turns the chart into readable planning context: latitude, seasonal range, monthly checkpoints, and how the curve should be used.
Solar fingerprint
Tromsø, Norway is modeled at 69.65°N, 18.96°E in Europe/Oslo. That coordinate pair drives every bar in the 2026 daylight curve.
Seasonal swing
The longest day is May 18 at 24h; the shortest is Jan 1 at 0h. The yearly range is 24h, which makes this a polar/extreme daylight profile.
Latitude context
Tromsø sits in the Northern Hemisphere polar latitude band. Latitude is the main reason two cities in the same timezone can have very different sunrise, sunset, and day-length patterns.
Monthly anchors
Useful checkpoints in this curve: Jan 15 0h 51m, Mar 15 11h 36m, Jun 15 24h, and Sep 15 13h 22m. These anchors help readers see the shape of the year without reading all 365 bars one by one.
Today and twilight
Today in Tromsø, sunrise is about 8:31 AM, sunset about 2:24 PM, solar noon 11:27 AM, and daylight totals 5h 53m. Civil twilight runs 7:14 AM to 3:41 PM; golden hour windows are — and —.
Golden hour planning
The longest combined golden hour day of 2026 is May 5 — 7h 57m. The shortest non-zero day is Sep 20 — 3h 52m. Year-round average is 4h 38m per day across days where a golden-hour window exists.
Twilight ladder
Nautical twilight today: 5:59 AM to 4:55 PM. Astronomical twilight today: 4:50 AM to 6:05 PM. The single longest stretch of true astronomical darkness in 2026 occurs on Dec 21 — 13h 32m. 191 days in 2026 include at least some astronomical darkness. 107 civil-twilight white-night days in 2026 (the sun stays above -6° all night). 174 astronomical white-night days (the sun never reaches -18°), so true darkness disappears for that stretch.
Seasonal momentum
Fastest daily daylight gain: May 18 (+52m from the previous day). Fastest daily daylight loss: Jul 26 (-59m from the previous day). Closest 12-hour balance: Mar 18 at 12h 1m (+1m from 12h). Average-month anchors: June average 24h is brightest, while December average 0h is shortest. 163 days reach 14h+ daylight; 146 days stay at 10h or less.
Blue and civil light
Today's combined blue hour totals 55m. The longest combined blue-hour day is Aug 14 — 2h 51m. Blue-hour average is 1h 7m per usable day. The longest civil-twilight-only day is Nov 27 — 5h 36m. Civil twilight averages 2h 36m where both dawn and dusk edges exist.
Sunrise and sunset are approximations for planning and comparison. For legal, aviation, photography, or scientific use, verify with a local almanac or official observatory source.
Frequently asked questions
Tromsø sun questions
- When is golden hour in Tromsø?
- Today the sun in Tromsø doesn't reach the golden-hour elevation band — the year's longest combined golden-hour day is May 5 — 7h 57m.
- When does civil twilight start and end in Tromsø?
- Civil twilight in Tromsø today runs 7:14 AM to 3:41 PM. It's the period when the sun is between -0.833° and -6° elevation; the brightest stars become visible at the dusk boundary.
- What is the longest astronomical-night day of the year in Tromsø?
- Tromsø's longest stretch of true astronomical darkness in 2026 is Dec 21 — 13h 32m. Astronomical twilight ends when the sun reaches -18° elevation; only beyond that do deep-sky targets become observable.
- Are there white nights in Tromsø?
- 107 days without a civil-twilight bound, 143 without a nautical-twilight bound, 174 without an astronomical-twilight bound. On those days the sun never falls low enough for the named phase to occur, so true darkness disappears for that stretch of 2026.
Comparable daylight curves
These are selected by latitude and annual daylight swing, not by the generic city list, so the comparison is tied to Tromsø's actual solar profile.