Updated 2 Nov 2026 · recomputed nightly
Is September 2027 a good month to visit Southampton?
Lively — the typical September day in Southampton is calmer than 56% of its year.
If you are coming for something that only happens in September, that is the trade. If not, February is quieter.
Calm · Lively · Busy · Packed rank a day against Southampton's own year — not a headcount.
September sits between the seasons in Southampton: mild and wet, around 20°C / 68°F with rain on about 10 days, Lively on 20 of 30 days — 10 days run Busy or Packed.
Mostly yes. The typical September day in Southampton is Lively, and 10 of the 30 days in our window run Busy or Packed. Expect around 20 °C by day, with rain on about 10 days. Public holidays in United States add to it. Cruise ships call on 14 of the 30 days, 3 at once on Friday 3 September. Late September is the month's quietest stretch in Southampton — the typical day at 44%, against 68% in early September. The crush is at the cruise terminals on turnaround days; the quiet is at the medieval walls circuit. The calmest day is Wednesday 1 September, the busiest Friday 3 September.
In short, a solid middle-ground pick.
Among the 12 months we forecast for Southampton, September ranks 7th for crowd pressure. Its heaviest day is Fri 3 Sep, busier than 97% of the year; its lightest is Wed 1 Sep at 44%.
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 →
Pack for wet first — rain on 10 of 30 days.
A folding one lives in the day bag and weighs nothing.
See umbrellas →
Wet stone is the thing to plan around in a month this wet.
See walking shoes →
How busy is Southampton in September?
The busiest days are the 3rd, 6th, 19th and 20th, and 6 more. Away from those, most days sit Lively. The calmest stretch is the 22nd–30th.
Cruise ships are in port on 14 of 30 days; the heaviest is Fri 3 Sep, 3 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 44% of the year and its heaviest at 97%, so where you land inside it matters. Daylight runs about 12 hours.
Either side of it, August picks up and October picks up.
The calmest days include the 1st, 4th and 8th — 16 days share that level, so there is room to choose.
Wed 01 Sep Lively busier than 44% of days here
Record Southampton on Wed 1 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-01 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 02 Sep Lively busier than 48% of days here · ⚓1
- Oceania Insignia — guest capacity 698 08:00–17:00
Record Southampton on Thu 2 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 698 guests at double occupancy; ships in port 08:00–17:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-02 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 03 Sep Packed busier than 97% of days here · ⚓3
- Costa Favolosa — guest capacity 3,014 07:00–18:00
- Oceania Sirena — guest capacity 684 08:00–17:00
- Queen Mary 2 — guest capacity 2,726 02:00–?
Record Southampton on Fri 3 Sep 2027 is forecast Packed. 3 cruise ships scheduled, at least 6,424 guests at double occupancy. Nearest calmer day: Thu 2 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-03 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 04 Sep Lively busier than 44% of days here
Record Southampton on Sat 4 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-04 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 05 Sep Busy busier than 76% of days here · ⚓1
- Queen Victoria — guest capacity 2,074 02:00–?
Record Southampton on Sun 5 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,074 guests at double occupancy. Nearest calmer day: Sat 4 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-05 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 06 Sep Packed busier than 87% of days here · ⚓1 · United States public holiday
- AIDAperla — guest capacity 3,286 08:00–20:00
Record Southampton on Mon 6 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 3,286 guests at double occupancy; ships in port 08:00–20:00. Why: United States public holiday. Nearest calmer day: Sun 5 Sep (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-06 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 07 Sep Busy busier than 79% of days here · ⚓1
- Mein Schiff 2 — guest capacity 2,534 07:00–20:00
Record Southampton on Tue 7 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,534 guests at double occupancy; ships in port 07:00–20:00. Nearest calmer day: Wed 8 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-07 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 08 Sep Lively busier than 44% of days here
Record Southampton on Wed 8 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-08 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 09 Sep Lively busier than 61% of days here · ⚓1
- Oceania Sonata — guest capacity 1,338 08:00–02:00
Record Southampton on Thu 9 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 1,338 guests at double occupancy; ships in port 08:00–02:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-09 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 10 Sep Busy busier than 81% of days here · ⚓1
- Queen Mary 2 — guest capacity 2,726
Record Southampton on Fri 10 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,726 guests at double occupancy. Nearest calmer day: Thu 9 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-10 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 11 Sep Lively busier than 44% of days here
Record Southampton on Sat 11 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-11 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 12 Sep Busy busier than 79% of days here · ⚓1
- Mein Schiff 2 — guest capacity 2,534 07:00–20:00
Record Southampton on Sun 12 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,534 guests at double occupancy; ships in port 07:00–20:00. Nearest calmer day: Sat 11 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-12 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 13 Sep Lively busier than 49% of days here · ⚓1
- Seven Seas Splendor — guest capacity 754 07:00–17:00
Record Southampton on Mon 13 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 754 guests at double occupancy; ships in port 07:00–17:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-13 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 14 Sep Busy busier than 82% of days here · ⚓1
- Costa Favolosa — guest capacity 3,014 07:00–19:00
Record Southampton on Tue 14 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 3,014 guests at double occupancy; ships in port 07:00–19:00. Nearest calmer day: Mon 13 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-14 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 15 Sep Lively busier than 47% of days here · ⚓1
- Silver Dawn — guest capacity 576 07:00–17:00
Record Southampton on Wed 15 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 576 guests at double occupancy; ships in port 07:00–17:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-15 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 16 Sep Lively busier than 44% of days here
Record Southampton on Thu 16 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-16 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 17 Sep Lively busier than 44% of days here
Record Southampton on Fri 17 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-17 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 18 Sep Lively busier than 44% of days here
Record Southampton on Sat 18 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-18 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 19 Sep Busy busier than 83% of days here · ⚓1
- Norwegian Prima — guest capacity 3,215 07:00–17:00
Record Southampton on Sun 19 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 3,215 guests at double occupancy; ships in port 07:00–17:00. Nearest calmer day: Sat 18 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-19 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 20 Sep Busy busier than 84% of days here · ⚓1
- AIDAperla — guest capacity 3,286 08:00–20:00
Record Southampton on Mon 20 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 3,286 guests at double occupancy; ships in port 08:00–20:00. Nearest calmer day: Sat 18 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-20 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 21 Sep Busy busier than 77% of days here · ⚓1
- Norwegian Jewel — guest capacity 2,388 05:00–16:00
Record Southampton on Tue 21 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 2,388 guests at double occupancy; ships in port 05:00–16:00. Nearest calmer day: Wed 22 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/southampton/#d-2027-09-21 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 22 Sep Lively busier than 44% of days here
Record Southampton on Wed 22 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-22 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 23 Sep Lively busier than 44% of days here
Record Southampton on Thu 23 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-23 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 24 Sep Lively busier than 44% of days here
Record Southampton on Fri 24 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-24 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 25 Sep Lively busier than 44% of days here
Record Southampton on Sat 25 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-25 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 26 Sep Lively busier than 44% of days here
Record Southampton on Sun 26 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-26 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 27 Sep Lively busier than 44% of days here
Record Southampton on Mon 27 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-27 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 28 Sep Lively busier than 44% of days here
Record Southampton on Tue 28 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-28 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 29 Sep Lively busier than 44% of days here
Record Southampton on Wed 29 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-29 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 30 Sep Lively busier than 44% of days here
Record Southampton on Thu 30 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/southampton/#d-2027-09-30 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Which week of September is quietest in Southampton?
Late September is the month's quietest stretch in Southampton — the typical day at 44%, against 68% in early September.
Can't move the dates? How to avoid the worst crowds
- The heaviest port day is Fri 3 Sep — 3 ships in at once. See the marquee sights on a lighter day, or be there for opening time.
- Need flexibility? The 22nd–30th 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.
September weather in Southampton
Comfortably warm — around 20°C / 68°F, easy shirtsleeve weather, with rain on about 10 days, so keep a layer handy.
Worth booking the marquee sights ahead for the busy days, but you can keep the rest of the trip flexible.
More about Southampton in September
Based on: UK's public holidays · the official overseas-visits pattern (ONS, measured 2021–2023; UK national curve) · five years of weather records (2019–2023) · confirmed event dates · 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.
