Starry Memory

Which constellations can you see from Cardiff tonight?

Stars and constellations over Cardiff tonight: October–December 2026

Constellations seen from Cardiff on the 15th of each month (local evening time)
MonthHigh overheadRising in the eastSetting in the west
mid-October · 9:00 pmCygnus, Cepheus, Cassiopeia, Lyra, Pegasus, Draco and AndromedaPisces, Perseus, Aries and AurigaOphiuchus and Boötes
mid-November · 9:00 pmCassiopeia, Andromeda, Cepheus, Perseus, Pegasus, Aries and CygnusTaurus, Gemini and OrionHercules, Aquila and Aquarius
mid-December · 9:00 pmPerseus, Cassiopeia, Andromeda, Aries, Cepheus and AurigaGemini, Orion, Ursa Major and Canis MinorAquarius and Lyra

From Cardiff on mid-October evenings (around 9:00 pm), look straight up for Cygnus, Cepheus, Cassiopeia, Lyra, Pegasus, Draco and Andromeda. Rising in the east: Pisces, Perseus, Aries and Auriga. Sinking in the west: Ophiuchus and Boötes. Ursa Major, Ursa Minor, Cassiopeia, Perseus, Cepheus and Draco never set from Cardiff. Bright stars to start from: Vega, Capella and Altair. By mid-December, Gemini, Orion, Ursa Major and Canis Minor join the evening sky.

Always above the horizon from Cardiff: Ursa Major, Ursa Minor, Cassiopeia, Perseus, Cepheus and Draco. Use the live chart below for tonight's exact view.

Use the free local tool

This page provides a result prefilled with the place and coordinates. The calculations and phone gyroscope work without an order; the HD poster remains optional. See tonight's constellations over Cardiff

Overhead, rising and never-setting constellations for October–December 2026, with a live chart for tonight

The table lists the constellations over Cardiff for each month of October–December 2026; the live chart then shows tonight's sky for the city or your exact location, with the Moon and planets. Both are free.

Why choose Starry Memory

  • Computed for the city's sky — The lists are calculated for Cardiff's latitude and local evening time, month by month, not copied from a generic seasonal chart.
  • Overhead, rising and setting — Knowing where a constellation stands helps you find it: overhead ones are the easiest, rising ones climb through the evening, setting ones are best early.
  • Never-setting groups — The circumpolar constellations of Cardiff are listed: they are there on any clear night of the year.
  • Live chart for tonight — The chart below recomputes the constellations, the Moon and the planets for tonight and for your exact location.

From Cardiff, latitude decides how high each familiar pattern can climb above an ideal horizon.

Latitude-screened constellations for Cardiff

Each entry below gives an approximate maximum altitude at meridian transit and a practical season; an asterisk means circumpolar in this simplified centroid model: Ursa Major: 85.5°, all year *; Perseus: 83.5°, all year *; Cassiopeia: 81.5°, all year *; Auriga: 80.5°, all year *; Cygnus: 78.5°, all year *; Draco: 76.5°, all year *; Cepheus: 71.5°, all year *; Ursa Minor: 64.5°, all year *; Andromeda: 76.5°, autumn; Lyra: 74.5°, summer; Boötes: 68.5°, spring; Gemini: 60.5°, winter; Taurus: 56.5°, winter; Leo: 53.5°, spring. This is a planning guide, not a promise that every star will be visible from a bright street. Date, hour, local obstructions and light pollution still matter. The live sky tool performs the date-specific projection that a static latitude table cannot.

Cardiff's verifiable local record

48000 · longitude -3.18000 · north hemisphere · timezone Europe/London · celestial-pole altitude 51.5°. Seasonal signature: longest night in December, 16 h 22 · shortest night in June, 7 h 38 · range 8.74 hours. Meridian star markers: Ursa Major 85.5° * · Perseus 83.5° * · Cassiopeia 81.5° * · Auriga 80.5° * · Cygnus 78.5° * · Draco 76.5° *. Nearby catalogue cities: Bristol 41 km · Swansea 55 km · Oxford 136 km. First regional eclipse shortlist: 2027-02-20 Penumbral lunar eclipse 23:14 UTC · 2027-08-02 Total solar eclipse 10:07 UTC · 2028-01-12 Partial lunar eclipse 04:14 UTC. Together these values form the local evidence record for the “constellations” page; they change with place and remain separate from real weather.

Cardiff compared with nearby catalogue cities

1. Cardiff → Bristol: 40.5 km · Δlat -0.025° · Δlon +0.583° · Δpole +0.0° · timezone Europe/London = Europe/London · longest night December 16 h 22 | 2. Cardiff → Swansea: 55.0 km · Δlat +0.141° · Δlon -0.763° · Δpole +0.1° · timezone Europe/London = Europe/London · longest night December 16 h 24 | 3. Cardiff → Oxford: 136.2 km · Δlat +0.272° · Δlon +1.924° · Δpole +0.3° · timezone Europe/London = Europe/London · longest night December 16 h 25. Monthly night comparison with the nearest catalogue reference — January: Cardiff 15 h 54 / Bristol 15 h 54 / Δ +0.00 h · February: Cardiff 14 h 18 / Bristol 14 h 18 / Δ +0.00 h · March: Cardiff 12 h 28 / Bristol 12 h 28 / Δ +0.00 h · April: Cardiff 10 h 24 / Bristol 10 h 24 / Δ +0.00 h · May: Cardiff 8 h 38 / Bristol 8 h 38 / Δ +0.00 h · June: Cardiff 7 h 38 / Bristol 7 h 38 / Δ -0.01 h · July: Cardiff 8 h 02 / Bristol 8 h 03 / Δ -0.01 h · August: Cardiff 9 h 37 / Bristol 9 h 37 / Δ +0.00 h · September: Cardiff 11 h 38 / Bristol 11 h 38 / Δ +0.00 h · October: Cardiff 13 h 38 / Bristol 13 h 38 / Δ +0.00 h · November: Cardiff 15 h 27 / Bristol 15 h 26 / Δ +0.01 h · December: Cardiff 16 h 22 / Bristol 16 h 22 / Δ +0.00 h. For constellation screening, latitude difference becomes a meridian-altitude difference; a small change is reported as small rather than exaggerated for local copy.

The astronomical fingerprint of Cardiff

Cardiff is represented by 51.4800° N, 3.1800° W, in Wales, using the IANA zone Europe/London. This is a high-latitude viewpoint: the relevant celestial pole stands about 51.5° above its horizon. No source elevation is used, so a flat horizon remains the transparent default.

Twelve monthly light estimates for Cardiff

The following pairs are approximate daylight / night duration around the 15th of each month: January: 8 h 06 / 15 h 54; February: 9 h 42 / 14 h 18; March: 11 h 32 / 12 h 28; April: 13 h 36 / 10 h 24; May: 15 h 22 / 8 h 38; June: 16 h 22 / 7 h 38; July: 15 h 58 / 8 h 02; August: 14 h 23 / 9 h 37; September: 12 h 22 / 11 h 38; October: 10 h 22 / 13 h 38; November: 8 h 33 / 15 h 27; December: 7 h 38 / 16 h 22. The longest estimated night in this model is December at 16 h 22; the shortest is June at 7 h 38. “Night” here is the complement of daylight on a flat horizon. Civil, nautical and astronomical twilight are not interchangeable, and weather is not predicted by this table.

What the calculation does — and does not claim

Coordinates, date and local time feed the same astronomical workflow used by the poster. The HYG catalogue provides star entries, while Astronomy Engine calculates moving bodies. The page does not claim that city-centre coordinates equal a hospital, venue or home: selecting an autocomplete suggestion replaces the shortcut with that location. It also separates astronomical geometry from weather and light pollution, so a correct map never becomes a claim that the ground-level sky was cloudless.

Free gyroscope first, optional poster second

On a compatible phone, the gyroscope turns the calculated sky into a movable window: tilt and rotate to explore, with star names shown beside key points. That experience is free. If a date deserves a keepsake, the same place can continue into the editor. The protected preview remains watermarked before payment; the €3.99 purchase unlocks the 4960 × 7016 px, 300 DPI file. Physical formats appear only when availability, delivery supplement and timing can be checked for the destination. Checkout is in euros; the card issuer shows the current conversion to pounds sterling (GBP).

Frequently asked questions

What constellations can I see tonight from Cardiff?

In mid-October around 9:00 pm: Cygnus, Cepheus, Cassiopeia, Lyra, Pegasus, Draco and Andromeda overhead, Pisces, Perseus, Aries and Auriga rising in the east. In mid-November: Cassiopeia, Andromeda, Cepheus, Perseus, Pegasus, Aries and Cygnus overhead, Taurus, Gemini and Orion rising.

Which constellations never set from Cardiff?

Ursa Major, Ursa Minor, Cassiopeia, Perseus, Cepheus and Draco stay above the horizon all night, all year, from Cardiff's latitude (51.5° N).

Can I see the Southern Cross from Cardiff?

No. From Cardiff, the Southern Cross never rises above the horizon.

When is the best time to look?

After full darkness (8:10 pm in mid-October, 6:20 pm in mid-November, 6:07 pm in mid-December) and away from the full Moon (October 26, November 24, December 24). The new Moons of October 10, November 9, December 9 give the darkest skies.

How do I find constellations from a city?

Start from the brightest stars, let your eyes adapt for 15 to 20 minutes, and look for the main outline rather than every star. Light pollution hides faint stars, so patterns such as Cassiopeia's W or Orion's belt are the easiest first targets.

Why does the sky change during the year?

The stars rise about four minutes earlier each night, so the evening sky shifts by about two hours a month as the Earth orbits the Sun. From Cardiff, Cygnus and Cepheus are overhead in mid-October; by mid-December, Perseus and Aries have taken over and Gemini is rising in the east. Latitude matters too: it decides which groups never rise and which never set.

See tonight's constellations over Cardiff

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