Updated 16 Sep 2026 · recomputed nightly
Is December 2026 a good month to visit Kos?
Calm — the typical December day in Kos is calmer than 85% of its year.
The weather is the trade-off here, not the crowds.
Calm · Lively · Busy · Packed rank a day against Kos's own year — not a headcount.
December 2026 is the Kos most visitors never see — Calm on 29 of 31 days and never busier than Lively, mild and wet, around 17°C / 63°F with rain on about 13 days.
Yes, if the weather does not put you off. December in Kos is Calm on the typical day, and not one of the 31 days in our window is crowded enough to call Busy. Expect around 17 °C by day, with rain on about 13 days. The crowd comes with the school holidays in Germany and the Netherlands. Early December is the month's quietest stretch in Kos — the typical day at 15%, against 37% in late December. The crush is at the Asklepion at coach hours; the quiet is at the coastal bike path. The calmest day is Tuesday 1 December, the busiest Friday 25 December.
In short, quiet and wide open, if the weather doesn't put you off.
Among the 12 months we forecast for Kos, December ranks 8th for crowd pressure. Its heaviest day is Fri 25 Dec, busier than 41% of the year; its lightest is Tue 1 Dec at 15%.
You won't need skip-the-line tickets here — that's rather the point. A month like this is the one for the longer visit — the guided walk, the food tour, the day out of town, with room and time to enjoy them. see what's on →
Pack for wet first — rain on 13 of 31 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 Kos in December?
It's quiet right through December — no crowded stretch to plan around.
The month is not one thing: its lightest day sits at 15% of the year and its heaviest at 41%, so where you land inside it matters. Daylight runs about 9 hours.
Any day works. There is no need to plan your dates around the crowds.
Tue 01 Dec Calm busier than 15% of days here
Record Kos on Tue 1 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 02 Dec Calm busier than 15% of days here
Record Kos on Wed 2 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 03 Dec Calm busier than 15% of days here
Record Kos on Thu 3 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 04 Dec Calm busier than 15% of days here
Record Kos on Fri 4 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 05 Dec Calm busier than 15% of days here
Record Kos on Sat 5 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 06 Dec Calm busier than 15% of days here
Record Kos on Sun 6 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 07 Dec Calm busier than 15% of days here
Record Kos on Mon 7 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 08 Dec Calm busier than 34% of days here · Italy public holiday
Record Kos on Tue 8 Dec 2026 is forecast Calm. Why: Italy public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 09 Dec Calm busier than 15% of days here
Record Kos on Wed 9 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 10 Dec Calm busier than 15% of days here
Record Kos on Thu 10 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 11 Dec Calm busier than 15% of days here
Record Kos on Fri 11 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 12 Dec Calm busier than 15% of days here
Record Kos on Sat 12 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 13 Dec Calm busier than 15% of days here
Record Kos on Sun 13 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 14 Dec Calm busier than 15% of days here
Record Kos on Mon 14 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 15 Dec Calm busier than 15% of days here
Record Kos on Tue 15 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 16 Dec Calm busier than 15% of days here
Record Kos on Wed 16 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 17 Dec Calm busier than 15% of days here
Record Kos on Thu 17 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 18 Dec Calm busier than 15% of days here
Record Kos on Fri 18 Dec 2026 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 19 Dec Calm busier than 27% of days here · Germany school holidays
Record Kos on Sat 19 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 20 Dec Calm busier than 27% of days here · Germany school holidays
Record Kos on Sun 20 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 21 Dec Calm busier than 30% of days here · Germany school holidays
Record Kos on Mon 21 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 22 Dec Calm busier than 30% of days here · Germany school holidays
Record Kos on Tue 22 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 23 Dec Calm busier than 35% of days here · Germany school holidays
Record Kos on Wed 23 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 24 Dec Calm busier than 37% of days here · Germany school holidays
Record Kos on Thu 24 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 25 Dec Lively busier than 41% of days here · Greece public holiday
Record Kos on Fri 25 Dec 2026 is forecast Lively. Why: Greece public holiday; Germany public holiday; UK public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 26 Dec Lively busier than 40% of days here · Greece public holiday
Record Kos on Sat 26 Dec 2026 is forecast Lively. Why: Greece public holiday; Germany public holiday; Netherlands public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 27 Dec Calm busier than 37% of days here · Germany school holidays
Record Kos on Sun 27 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 28 Dec Calm busier than 39% of days here · Germany school holidays
Record Kos on Mon 28 Dec 2026 is forecast Calm. Why: Germany school holidays; UK public holiday; Netherlands school holidays. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 29 Dec Calm busier than 37% of days here · Germany school holidays
Record Kos on Tue 29 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 30 Dec Calm busier than 37% of days here · Germany school holidays
Record Kos on Wed 30 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 31 Dec Calm busier than 37% of days here · Germany school holidays
Record Kos on Thu 31 Dec 2026 is forecast Calm. Why: school holidays in Germany and the Netherlands. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2026-12-31 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of December is quietest in Kos?
Early December is the month's quietest stretch in Kos — the typical day at 15%, against 37% in late December.
The upside of a quiet December
- The big-ticket sights are walk-ins now; the summer booking scramble is gone.
- This is a wing-it month: nothing needs locking in.
- Photograph the landmarks empty — the shot everyone else queues for.
No queues to skip, and nothing to book ahead — that's the whole point.
December weather in Kos
Mild — around 17°C / 63°F, with a light jacket for the evenings, with rain on about 13 days, so keep a layer handy. Daylight is short, about 9 hours, so plan the big sights for the middle of the day.
This is the value month: no need to book far ahead, and the freedom to change plans on the day is part of what you're getting.
More about Kos in December
Based on: Greece's public holidays · school vacations across Germany and the Netherlands · the season pattern from official overnight stays · 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.
