Your March weather guide
CoolWeather in Mykonos in March
Mykonos in March suits a break spent walking and being outdoors in layers, rather than a holiday built around swimming. Average daytime highs are about 15°C, nights fall to around 12°C, and the sea is cold at 15.3°C. It is milder than London, but not reliably warm enough to sit out in light clothing. Go if you are happy with cool evenings and some rain; choose another month if heat is the priority.
Long-term climate averages for Mykonos, not a forecast · 1991-2020
Mykonos, month by month
Your snapshot
At a glance
The useful details for Mykonos.
- Average daytime high
- 14.7°C
- 9 in 10 days stay below 17°C
- Average night-time low
- 11.7°C
- coldest 10% of nights: 9°C or lower
- Compared with London
- +4.2°C
- London averages 10.5°C in March
- Sea temperature
- 15.3°C
- year to year: 15°C to 16°C
- Sunshine per day (est.)
- 6.9h
- 59% of 11.7 h of daylight
- Rainy days (1 mm+)
- 7
- 45 mm over the month
- Humidity
- 71%
- Days over 25°C
- 0%
- none over 30°C
- Record high 1991-2020
- 21.0°C
- 2018-03-22
- Record low 1991-2020
- 3.3°C
- 2003-03-24
- Flight from London
- ≈ 3 h 54 min
- 2517 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How March compares
March is the 9th warmest month of the year in Mykonos and ranks 101st of 134 destinations we compare for March - see where else is hot in March. Within Greece it is 29th of 44 (Greece in March). Against London's average high of 10.5°C in March, Mykonos is 4.2°C warmer by day and 8.4°C warmer at night.
Daytime and night-time in March
The typical March day in Mykonos peaks at 14.7°C, but that is an average: the warmest 10% of days reach 17.4°C or more. Days over 25°C are rare. Nights average 11.7°C; one night in ten drops to 8.7°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest March day here reached 21.0°C (2018-03-22) and the coldest night 3.3°C (2003-03-24).
Rain in March
Some rain (4-8 rainy days): about 7 days with 1 mm or more, 45 mm in total. Year to year it varies a lot - the wettest March was 1998 with 123 mm, the driest 2001 with 7 mm. Humidity averages 71%.
Sea temperature in March
The sea averages 15.3°C - too cold for most (under 18°c). Depending on the year it ranges from 14.6°C to 15.9°C. For the warmest sea here, come in August (24.3°C).
Sunshine and daylight
Around 6.9 hours of sunshine a day (estimated from cloud cover), 11.7 hours of daylight: the sun rises about 06:30 and sets about 18:26 local time in mid-March. Average cloud cover is 41%.
Is March a good time to visit Mykonos?
March is not the strongest month here: cool days. The best months for Mykonos on our scoring are July, August, June; months averaging 25°C or more: Jul, Aug.
Mild afternoons, but keep a jacket handy
March warmth is modest, so pack for comfortable exploring rather than summer heat. The warmest days can reach 17.4°C or more, but that is not the everyday expectation. A long-sleeved top with a removable layer gives you flexibility when an afternoon feels milder. After dark, the average low of 11.7°C makes a jacket useful, especially if you plan to sit outside. The coldest nights can drop to 8.7°C or below, so do not rely on a light jumper alone. Midday is a sensible time for outdoor plans if you want the mildest conditions, rather than something to avoid because of heat.
Useful sunshine, some rain and a cold sea
There is enough sunshine to make outdoor time appealing, with about 6.9 hours a day within 11.7 hours of daylight. That does not mean clear skies throughout your stay: about 7 days in March have measurable rain. Pack a waterproof layer and keep your plans flexible rather than assuming every afternoon will stay dry. Time beside the sea is a more realistic focus than swimming. At 15.3°C, the water is cold, not merely refreshing, so do not build the trip around comfortable dips. March is a reasonable choice if you enjoy being outside without needing much warmth, but a poor match if swimming and sunbathing are your main reasons for going.
A little perspective
Mykonos through the year
March is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 13.1°C | 10.4°C | 15.8°C | 4.5 | 75 | 11 | 0% |
| February | 13.4°C | 10.5°C | 15.4°C | 5.3 | 64 | 9 | 0% |
| MarchSelected | 14.7°C | 11.7°C | 15.3°C | 6.9 | 45 | 7 | 0% |
| April | 17.0°C | 13.8°C | 15.9°C | 8.4 | 21 | 4 | 0% |
| May | 20.3°C | 17.1°C | 18.1°C | 10.3 | 10 | 2 | 2% |
| Junebest | 24.3°C | 21.0°C | 21.6°C | 13.2 | 2 | 1 | 33% |
| Julybest | 26.2°C | 23.3°C | 23.6°C | 14.1 | 0 | 0 | 81% |
| Augustbest | 26.3°C | 23.7°C | 24.3°C | 13.2 | 0 | 0 | 84% |
| September | 24.3°C | 21.5°C | 23.5°C | 10.7 | 6 | 1 | 38% |
| October | 21.1°C | 18.4°C | 21.4°C | 7.6 | 31 | 4 | 3% |
| November | 17.6°C | 14.9°C | 18.6°C | 5.4 | 43 | 6 | 0% |
| December | 14.5°C | 11.9°C | 16.7°C | 4.2 | 69 | 10 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in March
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Mykonos in March FAQs
Plain answers, grounded in the averages.
Is Mykonos hot in March?
Mykonos is cool in March: the average daytime high is 14.7°C and nights average 11.7°C. Days over 25°C are rare in March.
Can you swim in the sea in Mykonos in March?
The sea around Mykonos averages 15.3°C in March, which is cold for swimming without a wetsuit. Between 1991 and 2020 it ranged from 15°C to 16°C depending on the year.
How much does it rain in Mykonos in March?
Mykonos sees about 7 rainy days (1 mm or more) and 45 mm of rain in a typical March. The wettest March between 1991 and 2020 was 1998 (123 mm) and the driest was 2001 (7 mm).
How sunny is Mykonos in March?
Mykonos gets around 6.9 hours of sunshine a day in March out of 11.7 hours of daylight (estimated from average cloud cover).
How does Mykonos compare with the UK in March?
Mykonos is on average 4.2°C warmer than London by day in March (14.7°C against 10.5°C).
What is the hottest March on record in Mykonos?
Between 1991 and 2020 the hottest March day in Mykonos reached 21.0°C on 2018-03-22, and the coldest night dropped to 3.3°C on 2003-03-24.
How much warmer is Mykonos than London in March?
The average daytime high is 14.7°C in Mykonos, compared with 10.5°C in London, a difference of 4.2°C. That is a noticeable improvement, but still mild rather than hot. Bring layers instead of treating it as a summer wardrobe trip.
Is March worth considering for a short break?
Yes, if you want mild daytime weather and do not need warm seas. The flight from London is about 3 h 54 min, making it a short-haul option. Keep outdoor plans flexible for rain and expect to need a jacket in the evenings.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Mykonos. Sea temperature from the nearest 5 km sea cell, 2.3 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C