Updated 16 Sep 2026 · recomputed nightly
Is August 2027 a good month to visit Kos?
Packed — August is Kos's busiest month: the typical day is busier than 95% of its year.
If you are coming for something that only happens in August, that is the trade. If not, January is quieter.
Calm · Lively · Busy · Packed rank a day against Kos's own year — not a headcount.
This month's verified events: Assumption of the Virgin Mary (15).
August 2027 is peak-season Kos: hot and dry, around 30°C / 87°F, and Packed every day.
No — not if you want Kos to yourself. Every one of August's 31 days in our window is Busy or Packed, and the typical day is Packed. It is crowded throughout. Expect around 30 °C by day, with rain on about 3 days. The crowd comes with the school holidays in the Netherlands and Germany. Assumption of the Virgin Mary falls on 15 August. Late August is the month's quietest stretch in Kos — the typical day at 90%, against 98% in early August. For similar weather with fewer people, come in October or May. The crush is at the Asklepion at coach hours; the quiet is at the coastal bike path. The calmest day is Tuesday 31 August, the busiest Monday 2 August.
In short, worth it for the peak buzz, if you can take the crowds.
Among the 12 months we forecast for Kos, August ranks 4th for crowd pressure. Its heaviest day is Mon 2 Aug, busier than 99% of the year; its lightest is Tue 31 Aug at 87%.
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 →
Plan around the heat — around 30°C by day.
Refilling costs nothing and saves the walk to find a shop.
See water bottles →
The one thing you wear all day, every day of the trip.
See walking shoes →
How busy is Kos in August?
Every day is Packed — the crowd level barely shifts.
The month barely moves — every day lands between 87% and 99% of the year. Daylight runs about 13 hours.
The lightest days are the 23rd, 24th and 31st. Still busy — but the easiest of the month.
Sun 01 Aug Packed busier than 97% of days here · Germany school holidays
Record Kos on Sun 1 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 02 Aug Packed busier than 99% of days here · Germany school holidays
Record Kos on Mon 2 Aug 2027 is forecast Packed. Why: Germany school holidays; UK public holiday; Netherlands school holidays. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 03 Aug Packed busier than 98% of days here · Germany school holidays
Record Kos on Tue 3 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 04 Aug Packed busier than 98% of days here · Germany school holidays
Record Kos on Wed 4 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 05 Aug Packed busier than 98% of days here · Germany school holidays
Record Kos on Thu 5 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 06 Aug Packed busier than 98% of days here · Germany school holidays
Record Kos on Fri 6 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 07 Aug Packed busier than 97% of days here · Germany school holidays
Record Kos on Sat 7 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 08 Aug Packed busier than 97% of days here · Germany school holidays
Record Kos on Sun 8 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 09 Aug Packed busier than 97% of days here · Germany school holidays
Record Kos on Mon 9 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 10 Aug Packed busier than 97% of days here · Germany school holidays
Record Kos on Tue 10 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 11 Aug Packed busier than 97% of days here · Germany school holidays
Record Kos on Wed 11 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 12 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Thu 12 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 13 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Fri 13 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 14 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Sat 14 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 15 Aug Packed busier than 99% of days here · Greece public holiday · Assumption of the Virgin Mary
Event on this day
15 Aug 2027The mid-August feast of the Virgin Mary — a religious feast day that falls in the thick of the island's summer season.
Record Kos on Sun 15 Aug 2027 is forecast Packed. Why: Greece public holiday; Germany public holiday; Netherlands school holidays; Assumption of the Virgin Mary. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 16 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Mon 16 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 17 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Tue 17 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 18 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Wed 18 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 19 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Thu 19 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 20 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Fri 20 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 21 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Sat 21 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 22 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Sun 22 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 23 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Mon 23 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 24 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Tue 24 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 25 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Wed 25 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 26 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Thu 26 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 27 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Fri 27 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 28 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Sat 28 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 29 Aug Packed busier than 90% of days here · Germany school holidays
Record Kos on Sun 29 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 30 Aug Packed busier than 95% of days here · Germany school holidays
Record Kos on Mon 30 Aug 2027 is forecast Packed. Why: Germany school holidays; UK public holiday; Netherlands school holidays. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 31 Aug Packed busier than 87% of days here · Germany school holidays
Record Kos on Tue 31 Aug 2027 is forecast Packed. Why: school holidays in Germany and the Netherlands. Nearest calmer day: Wed 1 Sep (Busy). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/kos/#d-2027-08-31 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of August is quietest in Kos?
Late August is the month's quietest stretch in Kos — the typical day at 90%, against 98% in early August.
Can't move the dates? How to avoid the worst crowds
- 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.
August weather in Kos
Real heat — around 30°C / 87°F by day, so pace the afternoons and carry water, with rain on only about 3 days.
Book beds and the big-ticket sights well ahead, and start your days by eight — in a month this full, the early hours are the only uncrowded ones.
More about Kos in August
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.
