Wind from the north
- Marathonisi BeachShelter score 68 of 100
Sheltered beaches in Marathonisi today
Which side of Marathonisi is sheltered from today's wind? 1 beaches ranked live, updated every 2 hours.
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At a glance
Marathonisi beaches at a glance
- 1
- Mapped beaches
- 1
- Secluded beaches
Most beaches face east (1). Wind from that side reaches them first; wind from the opposite side leaves them sheltered.
Shelter by wind direction
Which beaches are sheltered in each wind?
Wind direction decides everything. These are the Marathonisi beaches that stay most sheltered, and the ones that get roughest, in a strong wind (6 Bft) from each direction. It is computed from how much open sea lies upwind of each beach.
Wind from the east
Every beach is fairly exposed to this wind.
Roughest
Wind from the south
- Marathonisi BeachShelter score 95 of 100
Wind from the west
- Marathonisi BeachShelter score 96 of 100
Sea temperature
Sea temperature in Marathonisi, month by month
The average temperature of the sea near the beaches of Marathonisi, from 30 years of satellite measurements (NOAA, 1991–2020).
Warm-water seasonJun – Oct≥ 22 °C
Warmest month26 °CAugust
Coldest month15 °CMarch
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 16° | 15° | 15° | 16° | 19° | 22° | 25° | 26° | 25° | 23° | 20° | 18° |
The sea is 22 °C or warmer from June to October, and warmest in August, at about 26 °C.
Sea temperature: NOAA OISST v2.1, average of 1991–2020 (public domain). Close to the shore the water can be a degree or two warmer or cooler.
Best time to go
When to go to Marathonisi
In the swimming season (May to October) the least windy month on Marathonisi is June, with an average wind of 15 km/h. The windiest is October, at 18 km/h. The wind is usually lighter in the morning and builds up in the afternoon, so go early on windy days.
- Sea temperature
Marathonisi: wind and weather month by month
Average conditions for every month near Marathonisi, from 25 years of satellite-based weather data (2001–2025). Wind is the average at 10 m height; the sea close to the shore can differ.
| Month | Wind | Temp | Sea | Rain (mm/day) |
|---|---|---|---|---|
| January | 24 km/h W | 14° | 16 °C | 3.9 |
| February | 24 km/h W | 14° | 15 °C | 2.8 |
| March | 21 km/h W | 15° | 15 °C | 2.3 |
| April | 19 km/h W | 16° | 16 °C | 1.4 |
| May | 16 km/h NW | 19° | 19 °C | 1.0 |
| June | 15 km/h NW | 23° | 22 °C | 0.8 |
| July | 17 km/h NW | 26° | 25 °C | 0.4 |
| August | 16 km/h NW | 27° | 26 °C | 0.5 |
| September | 16 km/h NW | 25° | 25 °C | 2.6 |
| October | 18 km/h NW | 22° | 23 °C | 3.4 |
| November | 22 km/h SW | 19° | 20 °C | 4.4 |
| December | 23 km/h W | 16° | 18 °C | 4.3 |
Historical data: NASA POWER, CC BY 4.0.
Marathonisi: November through the years
Average conditions for November near Marathonisi, from 25 years of satellite-based weather data (2001–2025).
On average 22 km/h and 19° in November. Least windy year on record: 2020 · windiest: 2004.
Show all 25 years
| Year | Wind | Temp | Rain (mm/day) |
|---|---|---|---|
| 2025 | 23 km/h SW | 20° | 6.6 |
| 2024 | 19 km/h NW | 19° | 5.0 |
| 2023 | 25 km/h W | 21° | 3.3 |
| 2022 | 22 km/h SW | 20° | 5.3 |
| 2021 | 24 km/h S | 19° | 4.7 |
| 2020 | 17 km/h E | 19° | 1.0 |
| 2019 | 24 km/h S | 21° | 7.5 |
| 2018 | 21 km/h SE | 19° | 5.6 |
| 2017 | 23 km/h SW | 18° | 5.0 |
| 2016 | 20 km/h S | 19° | 4.0 |
| 2015 | 21 km/h W | 20° | 2.0 |
| 2014 | 22 km/h SE | 19° | 3.3 |
| 2013 | 23 km/h S | 20° | 5.2 |
| 2012 | 21 km/h S | 20° | 3.3 |
| 2011 | 19 km/h E | 18° | 0.5 |
| 2010 | 24 km/h SW | 20° | 3.0 |
| 2009 | 21 km/h W | 19° | 3.8 |
| 2008 | 22 km/h S | 19° | 8.6 |
| 2007 | 22 km/h W | 18° | 4.5 |
| 2006 | 19 km/h NW | 17° | 2.1 |
| 2005 | 22 km/h SW | 18° | 7.7 |
| 2004 | 26 km/h W | 19° | 5.2 |
| 2003 | 22 km/h SE | 19° | 3.3 |
| 2002 | 19 km/h S | 19° | 4.0 |
| 2001 | 25 km/h NW | 18° | 4.7 |
Every beach
Beaches on Marathonisi
1 beaches mapped. The most sheltered first, then every other beach with a name; each one opens its own page.
Which side of Marathonisi is sheltered in a north wind?
In a strong north wind no side of Marathonisi is fully sheltered, so choose the beaches with the most land upwind: Marathonisi Beach.
How do you know which beaches are sheltered?
For every beach we measured how much open sea lies in each of 16 compass directions, using OpenStreetMap coastlines. Waves build over open water, so a beach with land close by in the direction the wind comes from is sheltered. Today's wind forecast from MET Norway is then applied, and the result is refreshed every 2 hours.
Are the forecasts reliable?
They are estimates. The model does not include swell from distant storms, and local gusts can be stronger than forecast. Always follow lifeguard flags and local warnings.
Which wind direction matters on Marathonisi?
The direction more than the strength. A beach is rough when the wind blows from the open sea towards it and flat when land lies upwind, so on a windy day one side of Marathonisi can be flat while the other has waves. That is why this page lists the most sheltered and the roughest beaches for each wind direction, and the live ranking above applies today's forecast.
When is the sea flattest on Marathonisi?
In the swimming season (May to October) the least windy month on Marathonisi is June, with an average wind of 15 km/h. The windiest is October, at 18 km/h. The wind is usually lighter in the morning and builds up in the afternoon, so go early on windy days.
How warm is the sea in Marathonisi?
The sea is 22 °C or warmer from June to October, and warmest in August, at about 26 °C.
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