Best time to visit Mykonos

Re-score for me — drag the dial — every chart recolours live for your heat & sea limits 27°C · sea 29°C
I'm comfortable up to 27°C feels-like
22° heat-averse 30° heat-loving

Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.

Sea feels bathtub at 29°C
26° strict 31° tolerant

Default 29 °C is the Beach Climate Index "bathtub" line (Morgan et al.) — where the sea stops being refreshing and starts feeling like a warm bath.

Saved to this browser. Changes update the strips below.
Sea temp cold <18° chilly 18–21° ideal 22–26° warm 27–28° bathtub 29–30° too warm ≥31°
Recent · 2020-2024
Interest Google Trends 2021-2025 searches, not arrivals (?)
Sea Nov 2022 – Dec 2024 (?)
Day · avg daily high (?)
Night · avg overnight low (?)
Tropical nights · nights/yr ≥20°C ETCCDI TR20 — sleep killer (?)
124313128101
UV index · On a typical day around midday, UV is about this (?)
2346791087532
On the sunniest 1 in 10 days, UV reaches this — and even higher
4783
PM2.5 air quality · on a typical day (?)
679101011111010876
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
101014141515141315141210
May 10/10 beach 10/10 urban feels 20°C (+2°C vs 1991-2020) · HCI 98/100
Day 22° · Night 17° 55% humidity 28 km/h wind 3 rain days (29h) 291h sun sea 19°C
Thermal 9
Sky 10
Rain 10
Wind 9

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.

Compare with another destination

Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.

Tours in Mykonos

30 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Mykonos).

  1. 1Private Tour: 4 Hours Mykonos Island Tour - Like a Local4.99★ (485)from $170
  2. 2Mykonos Discovery : Private Tour with Cruise or Hotel Pickup4.98★ (204)4hfrom $78
  3. 3Mykonos Tour with Cruise/Hotel Pick-Up(Small Group or Private)4.91★ (948)3h 30mfrom $64
  4. 4Mykonos Flying Dress Photoshoot4.80★ (64)1h 10mfrom $242
  5. 5Mykonos Delos Rhenia Daily Cruise with BBQ, Drinks & Transfer4.86★ (271)6hfrom $133
  6. 6Sea kayaking Mykonos natural beauty beaches5.00★ (146)2hfrom $91
  7. 7Mykonos Catamaran Sunset Cruise with Meal, Drinks & Transfer4.83★ (137)4hfrom $115
  8. 8Mykonos 6hrs sailing cruise: Delos Rhenia with lunch & transfer4.93★ (100)6hfrom $86
  9. 9Private Mykonos Tour Tailor-Made | Choice of the guest4.95★ (344)from $109
  10. 10Half Day Private Island Tour with a Local in Mykonos4.99★ (331)4hfrom $178
  11. 11Mykonos Private Island Tour5.00★ (180)4hfrom $178
  12. 12Private 5-Hour Cruise on Brand-New Luxury Yacht in Mykonos (Para Voce)4.96★ (142)5hfrom $1140
  13. 13Private Mykonos Catamaran Day Cruise with Meals & Water Toys4.89★ (123)5hfrom $1489
  14. 14Mykonos Private Island Tour In Half Day5.00★ (72)from $107
  15. 15Mykonos tour: Private highlights Tour with a Local4.97★ (73)from $115
  16. 16Mykonos Safari Quad Adventure Tour4.93★ (72)from $172
  17. 17Mykonos Cooking Class- Hands On4.93★ (84)3hfrom $156
  18. 18Private Luxury Transfer up to 11 Passengers4.97★ (66)from $29
  19. 19Mykonos Private Tour | Fully Customizable with Pickup5.00★ (19)from $49
  20. 20Mykonos Hidden Spots Jeep Guided Private Tour4.98★ (50)4hfrom $149
  21. 21Mykonos Small Group Tour for Cruise Passengers — Port Pickup4.94★ (1,166)4hfrom $120
  22. 22Tour and Wine Tasting in Mykonian Land4.96★ (1,829)2hfrom $78
  23. 23Mykonos: Private Catamaran Cruise—Lunch & Unlimited Drinks4.89★ (56)from $1375
  24. 24Mykonos: Brand-New Catamaran Cruise with Meal, Drinks & Transport4.87★ (1,244)5hfrom $136
  25. 25Catamaran Day & Sunset Cruises with meals Drinks and transportation4.87★ (1,265)5hfrom $126
  26. 26Best of Mykonos Island 4-Hour Private Tour4.63★ (75)4hfrom $304
  27. 27Small-Group Half-Day Tour in Mykonos4.85★ (762)4h 30mfrom $125
  28. 28Mykonos Sail Cruise to Delos and Rhenia Islands4.83★ (738)6hfrom $143
  29. 29Mykonos Shore Excursion with Pickup from Cruise Ship Terminal4.63★ (933)4hfrom $63
  30. 30Private Transfer in Mykonos4.86★ (42)from $29

Last refreshed 2026-10-18.

Similar climatesParos97% · Santorini97% · Milos97%

Other destinations with the most-alike year-round climate to Mykonos (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Mykonos's. Based on the 2020-2024 climatology, not this year's actual weather.

Month-by-month

Month Temp °C Feels °C Rain days Rain h Rain h/day Humidity Wind km/h Sun h UV Interest Score
Jan 11–14 10 10 108 10.8 64% 34 169 2 Quiet 7
Feb 11–15 10 6 69 11.5 63% 33 193 3 Quiet 8
Mar 11–16 11 7 85 12.1 59% 32 232 4 Quiet 8
Apr 14–19 15 5 46 9.2 58% 31 251 6 Quiet 9
May 17–22 20 3 29 9.7 55% 28 291 7 Moderate 10
Jun 22–27 26 2 17 8.5 56% 29 309 9 Busy 10
Jul 24–29 27 0 3 — 55% 37 318 10 Peak 10
Aug 24–29 29 2 11 5.5 57% 32 300 8 Peak 9
Sep 23–27 25 1 11 11.0 57% 31 264 7 Moderate 10
Oct 19–23 21 2 27 13.5 62% 30 233 5 Quiet 10
Nov 15–19 16 6 58 9.7 65% 32 194 3 Quiet 9
Dec 13–16 13 10 109 10.9 69% 29 181 2 Quiet 7

UV Index in Mykonos by Month

UV index in Mykonos peaks at 10 (very high) in July, dropping to 2 (low) in January. June, July, August reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.

Best months in detail

May

10/10

17–22°C (feels 20°C) · 3 rain days (29h) · 291 sun hours · 55% humidity · Moderate crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)

June

10/10

22–27°C (feels 26°C) · 2 rain days (17h) · 309 sun hours · 56% humidity · Busy crowd · UV 9 (very high)

September

10/10

23–27°C (feels 25°C) · 1 rain days (11h) · 264 sun hours · 57% humidity · Moderate crowd · UV 7 (high)

Every month

Show the other 9 months in detail

January

7/10

11–14°C (feels 10°C) · 10 rain days (108h) · 169 sun hours · 64% humidity · Quiet crowd · UV 2 (low)

February

8/10

11–15°C (feels 10°C) · 6 rain days (69h) · 193 sun hours · 63% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)

March

8/10

11–16°C (feels 11°C) · 7 rain days (85h) · 232 sun hours · 59% humidity · Quiet crowd · UV 4 (moderate)

April

9/10

14–19°C (feels 15°C) · 5 rain days (46h) · 251 sun hours · 58% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 7 (high)

July

10/10

24–29°C (feels 27°C) · 0 rain days (3h) · 318 sun hours · 55% humidity · Peak crowd · UV 10 (very high)

August

9/10

24–29°C · 2 rain days (11h) · 300 sun hours · 57% humidity · Peak crowd · UV 8 (very high)

October

10/10

19–23°C (feels 21°C) · 2 rain days (27h) · 233 sun hours · 62% humidity · Quiet crowd · UV 5 (moderate)

November

9/10

15–19°C (feels 16°C) · 6 rain days (58h) · 194 sun hours · 65% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 3 (moderate)

December

7/10

13–16°C (feels 13°C) · 10 rain days (109h) · 181 sun hours · 69% humidity · Quiet crowd · UV 2 (low)

Frequently asked questions about visiting Mykonos

When is the best time to visit Mykonos?

May is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 17–22°C (3 rainy days). The top three months by score are May, June, September.

What is the worst time to visit Mykonos?

January is the lowest-scoring month (7/10). Typical conditions: 11–14°C (10 rainy days).

When are crowds lowest in Mykonos?

Search-interest seasonality (Google Trends 2021-2025) is lowest in November and peaks in July. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.

Which months in Mykonos have good weather but fewer tourists?

September (climate 10/10, crowd index 43) and October (climate 10/10, crowd index 11) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Mykonos by month?

UV peaks at 10 (very high) in July and is lowest in January at 2 (low). Monthly peak values: Jan 2, Feb 3, Mar 4, Apr 6, May 7, Jun 9, Jul 10, Aug 8, Sep 7, Oct 5, Nov 3, Dec 2. June, July, August reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.

What is the UV index in Mykonos in July?

July is the peak UV month in Mykonos, with a daily-peak UV index of 10 (very high). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).

How high can UV get in Mykonos on the sunniest days?

Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. May is the worst case: typical days average UV 7 (high), but the top 10% of days reach UV 8 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, April, May, November. Plan sun protection for the worst case, not the average.

Is air quality in Mykonos bad for travelers?

PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 1 month: September. The worst month is June with a typical-day mean of 11 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 15 µg/m³ (moderate) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.