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
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.
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.
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
27 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
Mykonos Secrets Highlights Tour Small Group with Port Pickup - 2
Shared Mykonos Sail Cruise to Delos and Rhenia Islands - 3
Mykonos Catamaran Private Day Cruise, Full Lunch & Open-bar - 4
Paros: Cooking Class with Greek Meal & Wine - 5
Morning and Sunset Cruise with Meals and Drinks Included - 6
Private Mykonos Highlights Customizable Tour Pick Your Time - 7
Small Group Mykonos Shore Excursion Port Pickup and Return - 8
Private Mykonos Tour Tailor-Made | Choice of the guest - 9
Half Day Private Island Tour with a Local in Mykonos - 10
Mykonos Discovery : Private Tour with Cruise or Hotel Pickup - 11
Mykonos Private Island Tour - 12
Private Transfer Service All Around Mykonos Island - 1 WAY - 13
Mykonos tour: Private highlights Tour with a Local - 14
4 Hours private luxury boat trip in Mykonos - 15
Swim Sip And Savor 4 Beaches in 6 Hours Private Mykonos Tour - 16
2 Hours Gems of Mykonos Private Tour - 17
Flexible Private Tour Of Mykonos From 1 To 8 Hours - 18
Mykonos: Brand-New Catamaran Cruise with Meal, Drinks & Transport - 19
Catamaran Day & Sunset Cruises with meals Drinks and transportation - 20
Mykonos Small Group Tour for Cruise Passengers — Port Pickup - 21
Sightseeing like a Mykonian(Small Group or Private) - 22
Tour and Wine Tasting in Mykonian Land - 23
Small-Group Half-Day Tour in Mykonos - 24
Mykonos Catamaran Premium Day-Sunset Tours 8-flavor Meal & Drinks - 25
Mykonos Shore Excursion with Pickup from Cruise Ship Terminal - 26
Mykonos Sail Cruise to Rhenia, Guided Tour of Delos, Lunch&Drinks - 27
Sea kayaking Mykonos natural beauty beaches
Last refreshed 2026-05-27.
Similar climatesSantorini97% · Athens92% · Marseille91%
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 | Moderate | 10 |
| Jul | 24–29 | 27 | 0 | 3 | — | 55% | 37 | 318 | 10 | Busy | 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 | Quiet | 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
10/1017–22°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
10/1022–27°C (feels 26°C) · 2 rain days (17h) · 309 sun hours · 56% humidity · Moderate crowd · UV 9 (very high)
September
10/1023–27°C (feels 25°C) · 1 rain days (11h) · 264 sun hours · 57% humidity · Quiet crowd · UV 7 (high)
Every month
Show the other 9 months in detail
January
7/1011–14°C (feels 10°C) · 10 rain days (108h) · 169 sun hours · 64% humidity · Quiet crowd · UV 2 (low)
February
8/1011–15°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
8/1011–16°C (feels 11°C) · 7 rain days (85h) · 232 sun hours · 59% humidity · Quiet crowd · UV 4 (moderate)
April
9/1014–19°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
10/1024–29°C (feels 27°C) · 0 rain days (3h) · 318 sun hours · 55% humidity · Busy crowd · UV 10 (very high)
August
9/1024–29°C · 2 rain days (11h) · 300 sun hours · 57% humidity · Peak crowd · UV 8 (very high)
October
10/1019–23°C (feels 21°C) · 2 rain days (27h) · 233 sun hours · 62% humidity · Quiet crowd · UV 5 (moderate)
November
9/1015–19°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
7/1013–16°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 October and peaks in August. 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?
May (climate 10/10, crowd index 42) and September (climate 10/10, crowd index 35) — 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.