Updated 16 Sep 2026 · recomputed nightly
Is April 2027 a good month to visit Kos?
Lively — the typical April day in Kos is calmer than 54% 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.
April sits between the seasons in Kos: mild and showery, around 19°C / 66°F, Lively every day.
Mostly yes. April in Kos is Lively on the typical day, and not one of the 30 days in our window is crowded enough to call Busy. Expect around 19 °C by day, with rain on about 6 days. The crowd comes with the school holidays in Germany and the Netherlands. Cruise ships call on 1 of the 30 days. No week of April is meaningfully quieter — the typical day is Lively throughout; pick by day instead. The crush is at the Asklepion at coach hours; the quiet is at the coastal bike path. The calmest day is Saturday 10 April, the busiest Sunday 11 April.
In short, a solid middle-ground pick.
Of the 12 months we forecast for Kos, April is the quietest. Its heaviest day is Sun 11 Apr, busier than 49% of the year; its lightest is Sat 10 Apr at 45%.
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 →
Nothing extreme to plan around — rain on 6 of 30 days.
The one thing you wear all day, every day of the trip.
See walking shoes →
A folding one lives in the day bag and weighs nothing.
See umbrellas →
How busy is Kos in April?
It's quiet right through April — no crowded stretch to plan around.
Ships call on 1 of 30 days, a typical call day carrying at least 684 guests — real, but a secondary part of the crowd here; the season moves the needle more.
The month barely moves — every day lands between 45% and 49% of the year. Daylight runs about 13 hours.
Either side of it, May picks up.
The calmest days include the 10th, 12th and 13th — 13 days share that level, so there is room to choose.
Thu 01 Apr Lively busier than 48% of days here · Germany school holidays
Record Kos on Thu 1 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 02 Apr Lively busier than 48% of days here · Germany school holidays
Record Kos on Fri 2 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 03 Apr Lively busier than 48% of days here · Germany school holidays
Record Kos on Sat 3 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 04 Apr Lively busier than 46% of days here · Germany school holidays
Record Kos on Sun 4 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 05 Apr Lively busier than 46% of days here · Germany school holidays
Record Kos on Mon 5 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 06 Apr Lively busier than 46% of days here · Germany school holidays
Record Kos on Tue 6 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 07 Apr Lively busier than 46% of days here · Germany school holidays
Record Kos on Wed 7 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 08 Apr Lively busier than 46% of days here · Germany school holidays
Record Kos on Thu 8 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 09 Apr Lively busier than 46% of days here · Germany school holidays
Record Kos on Fri 9 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 10 Apr Lively busier than 45% of days here · Germany school holidays
Record Kos on Sat 10 Apr 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 11 Apr Lively busier than 49% of days here · ⚓1
- Azamara Onward — guest capacity 684 08:00–18:00
Record Kos on Sun 11 Apr 2027 is forecast Lively. 1 cruise ship scheduled, at least 684 guests at double occupancy; ships in port 08:00–18:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 12 Apr Lively busier than 45% of days here
Record Kos on Mon 12 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 13 Apr Lively busier than 45% of days here
Record Kos on Tue 13 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 14 Apr Lively busier than 45% of days here
Record Kos on Wed 14 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 15 Apr Lively busier than 45% of days here
Record Kos on Thu 15 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 16 Apr Lively busier than 45% of days here
Record Kos on Fri 16 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 17 Apr Lively busier than 45% of days here
Record Kos on Sat 17 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 18 Apr Lively busier than 45% of days here
Record Kos on Sun 18 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 19 Apr Lively busier than 45% of days here
Record Kos on Mon 19 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 20 Apr Lively busier than 45% of days here
Record Kos on Tue 20 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 21 Apr Lively busier than 45% of days here
Record Kos on Wed 21 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 22 Apr Lively busier than 45% of days here
Record Kos on Thu 22 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 23 Apr Lively busier than 45% of days here
Record Kos on Fri 23 Apr 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 24 Apr Lively busier than 48% of days here · Netherlands school holidays
Record Kos on Sat 24 Apr 2027 is forecast Lively. Why: school holidays in the Netherlands. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 25 Apr Lively busier than 49% of days here · Netherlands school holidays
Record Kos on Sun 25 Apr 2027 is forecast Lively. Why: Netherlands school holidays; Italy public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 26 Apr Lively busier than 48% of days here · Netherlands school holidays
Record Kos on Mon 26 Apr 2027 is forecast Lively. Why: school holidays in the Netherlands. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 27 Apr Lively busier than 49% of days here · Netherlands public holiday
Record Kos on Tue 27 Apr 2027 is forecast Lively. Why: Netherlands public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 28 Apr Lively busier than 48% of days here · Netherlands school holidays
Record Kos on Wed 28 Apr 2027 is forecast Lively. Why: school holidays in the Netherlands. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 29 Apr Lively busier than 48% of days here · Netherlands school holidays
Record Kos on Thu 29 Apr 2027 is forecast Lively. Why: school holidays in the Netherlands. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 30 Apr Lively busier than 49% of days here · Greece public holiday
Record Kos on Fri 30 Apr 2027 is forecast Lively. Why: Greece public holiday; Netherlands school holidays. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/kos/#d-2027-04-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of April is quietest in Kos?
No week of April is meaningfully quieter — the typical day is Lively throughout; pick by day instead.
April weather in Kos
Mild — around 19°C / 66°F, with a light jacket for the evenings, with rain on about 6 days.
Worth booking the marquee sights ahead for the busy days, but you can keep the rest of the trip flexible.
More about Kos in April
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.
