A first weekend in Cardiff: castle streets and the Bay
Cardiff Bay: heritage anchors and an optional barrage walk
Cardiff Castle: standard admission or a House Tour upgrade?An example packing list for Cardiff in December
Use this as a starting point and choose what suits your plans. Packtricia tailors your list and quantities to your trip length, weather and preferences.
Clothing
- Underwear
- Bras (if worn)
- Socks
- Sleepwear
- Thermal base-layer top
- Long-sleeved tops
- Trousers
- Warm sweater or fleece
- Warm insulated coat
- Water-resistant walking shoes
- Scarf
- Gloves
Toiletries
- Toothbrush
- Toothpaste
- Shampoo
- Conditioner
- Body wash or soap
- Deodorant
- Skincare products
- Sunscreen
- Hairbrush or comb
- Shaving supplies (if used)
- Menstrual products (if needed)
- Contact lens solution (if used)
Essentials
- Passport or accepted travel ID
- Travel tickets and booking confirmations
- Wallet and payment cards
- Phone
- Charging cable and charger
- Travel adapter (if needed)
- Medication (if needed)
- Glasses or contact lenses (if used)
- Refillable water bottle
- Day bag
- Backup cash
- Power bank
- Water-resistant pouch for phone and documents
Monthly weather and packing notes
December suits a warm coat, scarf and gloves. Keep an indoor alternative and check festive closures before committing to an outdoor-to-museum plan. In Cardiff, plan one outfit for Bute Park and the castle, carry rain protection for Cardiff Bay and the barrage, and use removable layers inside National Museum Cardiff and the arcades.
- Daytime
- 7–11°C
- Evenings
- 1–5°C
- Rain
- Frequent rain and showers
- Daylight
- Short winter days: keep exposed walks in daylight.
- Packing style
- Warm insulation, rain protection and grippy closed shoes
Planning bands are the rounded 1991–2020 Cardiff, Bute Park mean daily maximum (9.06°C) and minimum (2.84°C), plus or minus 2°C. These bands are clothing prompts, not forecast limits or statistical confidence intervals. Bute Park represents central Cardiff better than the exposed Bay; the barrage can be considerably windier. Check the forecast for your own dates. Monthly rainfall averages: 140 mm and about 15 days with at least 1 mm of rain.
Outfit ideas for your outings
December: Bute Park and the castle
- Long-sleeved base top
- Warm knit or fleece
- Long trousers
- Broken-in water-resistant walking shoes with a grippy sole
- Warm weather-resistant coat with a hood
A breezier outing around Cardiff Bay and the barrage
- Long-sleeved base top
- Warm knit or fleece
- Comfortable trousers
- Broken-in water-resistant walking shoes with a grippy sole
- Keep warm weather-resistant coat with a hood accessible rather than in the suitcase
Indoor time at National Museum Cardiff and the arcades
- Long-sleeved base top
- Removable knit
- Comfortable trousers
- Closed walking shoes
- Small bag for the jacket once indoors
What to leave behind
- Summer-only outfits: Cardiff's December averages still call for insulation during slow outdoor stops.
- Unworn stiff shoes: test your footwear before long sightseeing days on paving, slopes and steps.
Reviewed 2026-10-08
Met Office: Cardiff, Bute Park 1991–2020 climate averages · Visit Cardiff: city-centre and Bay itinerary · Transport for Wales: journey planning