Updated 16 Sep 2026 · recomputed nightly
Is September 2026 a good month to visit Mykonos?
Busy — the typical September day in Mykonos is busier than 72% of its year.
If you are coming for something that only happens in September, that is the trade. If not, January is quieter.
Calm · Lively · Busy · Packed rank a day against Mykonos's own year — not a headcount.
September is one of Mykonos's busiest months: warm and dry, around 26°C / 79°F, and Busy on 9 of 15 days. (Our forecast covers 16–30 September — the rest of September is beyond the current window.)
It depends. The typical September day in Mykonos is Busy, and 12 of the 15 days in our window run Busy or Packed, so most days feel crowded. Expect around 26 °C by day, with rain on about 1 days. Public holidays in Germany add to it. Cruise ships call on 13 of the 15 days, 5 at once on Thursday 24 September. For similar weather with fewer people, come in October or May. The crush is at Chora's lane maze; the quiet is at Delos beyond the agora. The calmest day is Saturday 26 September, the busiest Thursday 24 September.
In short, worth it for the peak buzz, if you can take the crowds.
Among the 12 months we forecast for Mykonos, September ranks 4th for crowd pressure. Its heaviest day is Thu 24 Sep, busier than 95% of the year; its lightest is Sat 26 Sep at 54%.
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 →
An easy month to pack for — rain on 1 of 30 days.
Paper keeps working when the phone is flat and the signal is gone.
See Mykonos guides →
The one thing you wear all day, every day of the trip.
See walking shoes →
How busy is Mykonos in September?
The busiest days are the 22nd, 24th, 27th and 28th, and 8 more. Away from those, most days sit Lively.
Ships call on 13 of 15 days, a typical call day carrying at least 5,430 guests between them — real, but a secondary part of the crowd here; the season moves the needle more.
The month is not one thing: its lightest day sits at 54% of the year and its heaviest at 95%, so where you land inside it matters. Daylight runs about 12 hours.
Either side of it, August is busier still and October is much calmer.
The calmest days are the 21st, 26th and 30th — aim for those if your dates can flex.
Wed 16 Sep Busy busier than 74% of days here · ⚓2
- Celebrity Infinity — guest capacity 2,170 07:00–18:00
- Celebrity Xcel — guest capacity 3,260 07:00–18:00
Record Mykonos on Wed 16 Sep 2026 is forecast Busy. 2 cruise ships scheduled, at least 5,430 guests at double occupancy; ships in port 07:00–18:00. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 17 Sep Busy busier than 77% of days here · ⚓5
- Celestyal Journey — guest capacity 1,260 08:00–02:00
- Douglas Mawson — guest capacity 154
- Emerald Kaia — guest capacity 128
- Odyssey Of The Seas — guest capacity 4,198 07:00–17:00
- Star Flyer — guest capacity 170
Record Mykonos on Thu 17 Sep 2026 is forecast Busy. 5 cruise ships scheduled, at least 5,910 guests at double occupancy. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 18 Sep Busy busier than 65% of days here · ⚓3
- Azamara Onward — guest capacity 684 08:00–18:00
- Celestyal Discovery — guest capacity 1,800 18:00–23:00
- Scarlet Lady — guest capacity 2,770 08:00–14:00
Record Mykonos on Fri 18 Sep 2026 is forecast Busy. 3 cruise ships scheduled, at least 5,254 guests at double occupancy; ships in port 08:00–23:00. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 19 Sep Busy busier than 66% of days here · ⚓2
- Celebrity Equinox — guest capacity 2,852 07:00–18:00
- Wind Spirit — guest capacity 148 08:00–18:00
Record Mykonos on Sat 19 Sep 2026 is forecast Busy. 2 cruise ships scheduled, at least 3,000 guests at double occupancy; ships in port 07:00–18:00. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 20 Sep Busy busier than 67% of days here · ⚓1 · Germany public holiday
- MSC Divina — guest capacity 3,502 14:00–23:00
Record Mykonos on Sun 20 Sep 2026 is forecast Busy. 1 cruise ship scheduled, at least 3,502 guests at double occupancy; ships in port 14:00–23:00. Why: Germany public holiday. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 21 Sep Lively busier than 57% of days here · ⚓1
- Celestyal Discovery — guest capacity 1,800 18:00–23:00
Record Mykonos on Mon 21 Sep 2026 is forecast Lively. 1 cruise ship scheduled, at least 1,800 guests at double occupancy; ships in port 18:00–23:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/mykonos/#d-2026-09-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 22 Sep Packed busier than 87% of days here · ⚓4
- Celebrity Infinity — guest capacity 2,170 07:00–18:00
- MSC Lirica — guest capacity 1,984 10:00–01:00
- Norwegian Viva — guest capacity 3,215 07:00–19:00
- Ritz Carlton Evrima — guest capacity 214 08:00–23:00
Record Mykonos on Tue 22 Sep 2026 is forecast Packed. 4 cruise ships scheduled, at least 7,583 guests at double occupancy; ships in port 07:00–23:00. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 23 Sep Busy busier than 72% of days here · ⚓2
- Celebrity Eclipse — guest capacity 2,850 07:00–18:00
- Costa Deliziosa — guest capacity 2,260 08:00–18:00
Record Mykonos on Wed 23 Sep 2026 is forecast Busy. 2 cruise ships scheduled, at least 5,110 guests at double occupancy; ships in port 07:00–18:00. Nearest calmer day: Mon 21 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 24 Sep Packed busier than 95% of days here · ⚓5
- Celestyal Journey — guest capacity 1,260 08:00–02:00
- Emerald Azzurra — guest capacity 100
- Enchanted Princess — guest capacity 3,660 07:00–19:00
- Odyssey Of The Seas — guest capacity 4,198 07:00–17:00
- Scarlet Lady — guest capacity 2,770 09:00–14:00
Record Mykonos on Thu 24 Sep 2026 is forecast Packed. 5 cruise ships scheduled, at least 11,988 guests at double occupancy. Nearest calmer day: Wed 23 Sep (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 25 Sep Busy busier than 68% of days here · ⚓2
- Celestyal Discovery — guest capacity 1,800 18:00–23:00
- Norwegian Pearl — guest capacity 2,394 10:00–22:00
Record Mykonos on Fri 25 Sep 2026 is forecast Busy. 2 cruise ships scheduled, at least 4,194 guests at double occupancy; ships in port 10:00–23:00. Nearest calmer day: Sat 26 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 26 Sep Lively busier than 54% of days here
Record Mykonos on Sat 26 Sep 2026 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/mykonos/#d-2026-09-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 27 Sep Busy busier than 82% of days here · ⚓4
- Carnival Legend — guest capacity 2,124 08:00–17:00
- MSC Divina — guest capacity 3,502 14:00–23:00
- Queen Anne — guest capacity 2,996
- Wind Star — guest capacity 148 08:00–18:00
Record Mykonos on Sun 27 Sep 2026 is forecast Busy. 4 cruise ships scheduled, at least 8,770 guests at double occupancy. Nearest calmer day: Sat 26 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 28 Sep Packed busier than 93% of days here · ⚓5
- Celestyal Discovery — guest capacity 1,800 18:00–23:00
- Costa Fascinosa — guest capacity 3,014 08:00–18:00
- Marella Discovery — guest capacity 1,830 08:00–17:00
- Norwegian Viva — guest capacity 3,215 07:00–22:00
- Silver Nova — guest capacity 728 08:00–18:00
Record Mykonos on Mon 28 Sep 2026 is forecast Packed. 5 cruise ships scheduled, at least 10,587 guests at double occupancy; ships in port 07:00–23:00. Nearest calmer day: Sun 27 Sep (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 29 Sep Busy busier than 79% of days here · ⚓3
- Explorer Of The Seas — guest capacity 3,286 07:00–19:00
- MSC Lirica — guest capacity 1,984 10:00–01:00
- Seven Seas Navigator — guest capacity 490 09:00–18:00
Record Mykonos on Tue 29 Sep 2026 is forecast Busy. 3 cruise ships scheduled, at least 5,760 guests at double occupancy; ships in port 07:00–19:00. Nearest calmer day: Wed 30 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/mykonos/#d-2026-09-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 30 Sep Lively busier than 54% of days here
Record Mykonos on Wed 30 Sep 2026 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/mykonos/#d-2026-09-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
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.
September weather in Mykonos
Comfortably warm — around 26°C / 79°F, easy shirtsleeve weather, with rain on only about 1 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 Mykonos in September
Based on: Greece's public holidays · school vacations across France, 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.
