Updated 4 Aug 2026 · recomputed nightly

Visiting Southampton in December 2026?

December sits between the seasons in Southampton: cool and wet, around 9°C / 49°F with rain on about 15 days, Calm on 19 of 31 days — 11 days run Busy or Packed.

In short, a solid middle-ground pick.

Among the 12 months we forecast for Southampton, December ranks 5th for crowd pressure. Its heaviest day is Fri 18 Dec, busier than 99% of the year; its lightest is Tue 1 Dec at 39%.

Crowds

11/31 busy or packed

19 calm · 1 lively

Weather

9°C / 49°F

rain ~15 days

Value

Weather is the catch

a solid middle-ground pick

Preparing pays off in a month like this: timed-entry tickets and pre-booked tours turn the queue time into sightseeing time. see the options →

How busy is Southampton in December?

The busiest days are the 10th, 14th, 18th and 28th, and 7 more. Away from those, most days sit Calm. The calmest stretch is the 6th–9th.

Cruise ships are in port on 11 of 31 days; the heaviest is Fri 18 Dec, 2 ships in at once. Those mornings fill the squares first — start early, or save them for indoors.

The month is not one thing: its lightest day sits at 39% of the year and its heaviest at 99%, so where you land inside it matters. Daylight runs about 8 hours.

Either side of it, January is far calmer.

The calmest days include the 1st, 2nd and 3rd — 19 days share that level, so there is room to choose.

CalmLivelyBusyPacked⚓ ships in port · % = busier than this share of the year · tap any day for its full forecast

Best daysTue 1 · Wed 2 · Thu 3 — The calmest days include the 1st, 2nd and 3rd — 19 days share that level, so there is room to choose.

Busiest daysThu 10 · Mon 14 · Fri 18 · Mon 28 — the heaviest of 11 busier days — check the calendar for the rest.

How does January compare? →

Locked into a busy day? Here's the play.

–9am

Own the morning.The ships dock and unload mid-morning. The headline sights before nine are yours.

10–5

Go where the day-trippers don't.Away from the headline sights it stays manageable all day. Save the marquee ones.

5pm+

Take the city back.Ships sail by early evening and the squares empty out — the best hour of the day.

The heaviest port day is Fri 18 Dec — 2 ships in at once. See the marquee sights on a lighter day, or be there for opening time.
Need flexibility? The 6th–9th is the month's calmest stretch — the easiest window to move around in.
On the busy days, the walk-up queues for the big sights are the biggest time-sink — a timed-entry ticket skips them, which is where a busy month is won or lost.

Travelling on a busy day?
Timed-entry and skip-the-line tickets turn queue time into sightseeing time — sort them before you fly.

See skip-the-line options for Southampton →

December weather in Southampton

Cold — around 9°C / 49°F, so pack a proper coat, with rain on about 15 days, so keep a layer handy. Daylight is short, about 8 hours, so plan the big sights for the middle of the day.

Southampton gets rain on about 15 days in December, so the odds of being caught out are real. What earns its bag space is a shell that packs to nothing, dries fast and has a hood that survives wind; a heavy waterproof is overkill and an umbrella is one more thing to carry through crowds. Browse on Amazon ↗
Around 9°C / 49°F, and the cold in Southampton is the damp kind that gets through padding. Thin layers you can peel off indoors work better than one thick coat — a merino base layer carries the load without the bulk. Browse on Amazon ↗

As an Amazon Associate, this site earns from qualifying purchases — we link categories, never specific products we haven't tested.

Is December worth it in Southampton?

The weather's the catch, but you dodge the worst of the crowds.

Worth booking the marquee sights ahead for the busy days, but you can keep the rest of the trip flexible.

Compare January →

Keep planning

← Southampton in NovemberThe month before — compare the crowds.Southampton in January →The month after — compare the crowds. Southampton, the whole yearAll twelve months on one page. Fort LauderdaleBusy most days in December — see its full year.KralendijkPacked most days in December — see its full year.MelbournePacked most days in December — see its full year.

Built on: UK's public holidays · the official overseas-visits pattern (ONS, measured 2021–2023; UK national curve) · five years of weather records (2019–2023) · the published cruise schedule
Every figure is recomputed nightly from real cruise schedules, public and school holidays, and long-run climate normals. Gaps are shown, not filled.