What to pack for Belfast in December
Heading to Belfast in December? Here's a packing list built directly from local climate averages — not generic blog advice.
December is one of the coldest months of the year in Belfast (ranked 10 of 12) and moderate for rainfall (ranked 7 of 12). Day temperatures are 2°C cooler than November and cooling toward January — so this month's packing list won't be identical to November's or January's.
Essentials
- ★ Passport + a photocopy stored separately Travel documents
- ★ Phone + charging cables (USB-C, Lightning as needed) Daily essentials
- • Refillable water bottle (1L) Reduces single-use plastic + saves money
- • Compact daypack (15–20L) For day trips, hands-free walking
- • Travel-size first-aid kit (band-aids, ibuprofen, antihistamines) Pharmacy access varies
Tops
- ★ Long-sleeve shirts (4–5) — flannel, henley, or merino Avg high 8.2°C — chilly
- ★ Lightweight sweater or fleece (2) Layering for cool days
- • Thin merino base layer (1) Wicking + warmth without bulk
Bottoms
- ★ Jeans or chinos (2) Versatile for mild weather
- • 1 dressier pair (dark chinos or trousers) Restaurants/evenings — works for smart-casual settings
Outerwear & layers
- ★ Warm winter coat (wool overcoat or insulated parka) Overnight lows 4.2°C
- ★ Wool scarf + warm beanie Heat retention
- ★ Insulated gloves (touchscreen-compatible) Cold mornings
Rain & weather protection
- ★ Waterproof jacket or rain shell (e.g. Patagonia Torrentshell) 15 rain days expected
- ★ Compact travel umbrella For sudden showers
Footwear
- ★ Insulated waterproof boots (Blundstone, Sorel, or hiking-grade) Cold + possibly wet conditions
- ★ Wool socks (5+ pairs) — Smartwool, Darn Tough Warmth and dryness; cotton socks freeze fingers in damp cold
Accessories
- • Lip balm with SPF + thick hand cream Cold dry air cracks skin fast
Power, voltage & adapters
- ★ 230V at 50Hz Mains electricity standard for United Kingdom
- ★ Plug types: G (Type G — flat 3-pin (UK/Ireland/Hong Kong/Singapore/Malaysia)) Single common plug type
- ★ From the US/Canada: bring an A→G travel adapter US Type A/B plugs don't fit United Kingdom's outlets
- ★ Check device voltage labels: 'INPUT: 100–240V' is dual-voltage (most modern phones, laptops, chargers — safe). Single-voltage 110V devices (older hairdryers, curling irons) need a step-down converter, not just an adapter. United Kingdom runs 230V — too high for US-only 110V devices
- • From continental Europe: bring a C/F→G travel adapter EU Type C/F plugs don't fit United Kingdom's outlets
- · Easiest option: a universal travel adapter (e.g. Anker, Epicka) that handles A/B/C/E/F/G/I in one — covers ~95% of countries. If you travel to multiple regions
⚖️ Can you carry-on?
Maybe — possible with a packable down jacket, careful shoe choices (one warm + one walking), and wearing your bulkiest layer on the plane. Expect to use most of the carry-on volume.
24 suggested items total — 5 essentials, 8 clothing items, 2 pairs of shoes.
What you can leave at home
Based on Belfast's December climate, here's what won't earn its bag space:
- shorts & sandals (too cool to wear comfortably)
- beach towel (unless you're brave)
- delicate suede or leather shoes (they'll get ruined)
- snow boots and ice grips
How this list was built
Every recommendation above maps to specific climate data for Belfast in December: average high (8.2°C), average low (4.2°C), expected rain days (15), and any peak hazard seasons. Heavier items appear at colder temperatures; rain gear scales with how often it rains; sun protection appears when it's warm and dry.
The ★ items are essential — pack these first. The • items are recommended for comfort. The · items are nice-to-have if you have space.
Other months in Belfast
Daily forecasts, climate averages, and the best activities for the season.