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20 summers measured, 2006 to 2025

Naxos weather, month by month

Wind, sea and visitors from May to October, as they really were.

See Naxos beaches today
Naxos, Greece
Windiest stretch
3 July – 20 August
Warmest sea
24°C in August
Busiest month
August
Windy days reaching 5 Beaufort

May to October, at a glance

7of 31 days

May

Rarely
Sea
19°C
Visitors
38%

7of 30 days

June

Rarely
Sea
22°C
Visitors
68%
Windiest

11–15of 31 days

July

Sometimes
Sea
23°C
Visitors
74%
Warmest seaBusiest

9–13of 31 days

August

Sometimes
Sea
24°C
Visitors
100%

9–11of 30 days

September

Sometimes
Sea
24°C
Visitors
69%

9of 31 days

October

Sometimes
Sea
22°C
Visitors
22%

Each bar is one summer, 2006 to 2025, and the red one is the windiest. A windy day is one that reached 5 Beaufort or more at some point between 10:00 and 20:00. Where you see two figures, one comes from our 20-summer record for the whole island and the other from the anemometer at the airport. Visitors are compared with the August peak.

No two alike

Twenty summers, one row each

Each row is a summer, each square a week. Darker means more windy days. No two summers match, so the cards above are a typical picture and your week can differ.

MayJunJulAugSepOct20062011201620212025
21 daysAugust 2009, the windiest
5 daysAugust 2023, the calmest

Sheltered when it blows

During the windiest stretch, the most sheltered side was the south coast, with beaches fit for a swim such as Kalantos, Agiassos and Rina.

  • Kalantos
  • Agiassos
  • Rina

Is it windy, month by month

Is Naxos windy in May?

Rarely: 7 of the 31 days reached 5 Beaufort or more, averaged over the last 20 summers. It swings a lot from year to year: 3 days in 2019, 10 in 2025. The sea averages 19°C, and visitors reach 38% of the August peak.

Is Naxos windy in June?

Rarely: 7 of the 30 days reached 5 Beaufort or more, averaged over the last 20 summers. It swings a lot from year to year: 2 days in 2021, 16 in 2025. The sea averages 22°C, and visitors reach 68% of the August peak.

Is Naxos windy in July?

Sometimes: 11 to 15 of the 31 days reached 5 Beaufort or more, averaged over the last 20 summers. Our record gives 15, the airport anemometer 11. July is the windiest of these months. Almost all of it comes from the north: the meltemi. It swings a lot from year to year: 4 days in 2018, 25 in 2022. The sea averages 23°C, and visitors reach 74% of the August peak.

Is Naxos windy in August?

Sometimes: 9 to 13 of the 31 days reached 5 Beaufort or more, averaged over the last 20 summers. Our record gives 13, the airport anemometer 9. It swings a lot from year to year: 5 days in 2023, 21 in 2009. The sea averages 24°C, the warmest of these months, and August is the busiest month.

Is Naxos windy in September?

Sometimes: 9 to 11 of the 30 days reached 5 Beaufort or more, averaged over the last 20 summers. Our record gives 9, the airport anemometer 11. It swings a lot from year to year: 3 days in 2017, 15 in 2025. The sea averages 24°C, and visitors reach 69% of the August peak.

Is Naxos windy in October?

Sometimes: 9 of the 31 days reached 5 Beaufort or more, averaged over the last 20 summers. It swings a lot from year to year: 1 days in 2020, 14 in 2024. The sea averages 22°C, and visitors reach 22% of the August peak.

How these numbers were measured

A windy day is one that reached 5 Beaufort or more at some point between 10:00 and 20:00. The record comes from ERA5, the European weather archive run by Copernicus, and covers 2006 to 2025. The second figure comes from the METAR reports of Naxos airport over the same years. An airport is one spot, so neither number alone is the whole island. Sea temperature comes from Copernicus satellite records, 1995 to 2024, about 5 km offshore, so shallow bays run warmer. Visitor figures are official overnight stays for 2024 and 2025, so they leave out day trippers and cruise passengers. These are typical values, not a forecast for any single day.

Other places, same measurements

Typical values, not a forecast. Wind: ERA5, Copernicus, 2006 to 2025, plus the METAR records of Naxos airport. Sea: Copernicus, 1995 to 2024. Visitors: official overnight stays, 2024 to 2025.