Satellite: Sentinel-2 cloudless 2017 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
41.7km²
Area
43km
Coastline
298m
Highest point
307
People
24°C
Warmest sea
August
82km
To the mainland
When to go to Agios Efstratios
Best for the beach from July to August.
The sea is warmest in August (24 °C) and coolest in March (14 °C). Comfortable swimming (21 °C or more): from June to September.
Averages 1991–2020. Sea: NOAA OISST, the water within 35 km of the coast. Air, rain and sun: NASA POWER. Best months weigh warm afternoons (23–30 °C), sea of 24 °C or more and few wet days.
Greek island
Agios Efstratios is an island in Greece. It covers 41.7 km², with 43 km of coastline. Its highest point rises to 298 m. About 307 people live on it. The nearest mainland is 82 km away.
Getting there
- Skiathos Island National Airport (JSI)nearest airport with scheduled flights · 134 km in a straight lineCar hire at JSI airport (Skiathos)Discover Cars · Affiliate link↗
- FerriesAgios Efstratios - Lemnos, Lavrio - Agios Efstratios
- 82 km from the mainlanddistance to the nearest continental coast
- From July to Augustbest months to go (from 30 years of averages)
Plan the trip
Ferries, stays and things to do
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
On the island
What you find on Agios Efstratios.
- 16beaches
- 1lighthouses
- 1ferry terminalsAgios Efstratios Port
- 1marinas
- 4restaurants, cafés and bars
Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.
Cross-checked with our atlases
Agios Efstratios in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Agios Efstratios, each with its own numbers.
1mountainPeakyas
The shape of the land.
On average the island stands 111 m above the sea. 88 % of it is below 200 m.
- 21 %0–50 m
- 68 %50–200 m
- 12 %200–500 m
Share of the island's area in each altitude band, from the Copernicus DEM (30 m, read at 30–240 m on large islands).
Size, for real
Next to islands you may know.
5 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Ágios Efstrátiosno census figure
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 12 | 13 | 14 | 16 | 19 | 23 | 26 | 26 | 23 | 20 | 17 | 14 |
| Night low (°C) | 10 | 10 | 12 | 14 | 18 | 22 | 24 | 24 | 22 | 18 | 15 | 12 |
| Sea (°C) | 15 | 15 | 14 | 15 | 18 | 22 | 24 | 24 | 22 | 20 | 18 | 16 |
| Rain (mm) | 114 | 91 | 68 | 48 | 34 | 31 | 17 | 10 | 52 | 78 | 91 | 134 |
| Wet days | 11 | 10 | 10 | 7 | 5 | 4 | 2 | 2 | 5 | 8 | 10 | 13 |
| Sun h/day | 3.1 | 4.3 | 6.4 | 8.3 | 10.5 | 12.0 | 12.5 | 11.4 | 9.1 | 6.7 | 4.7 | 2.8 |
| Wind (km/h) | 27 | 27 | 24 | 21 | 17 | 16 | 18 | 20 | 20 | 23 | 24 | 27 |
Averages 1991–2020 for the ~55 km NASA POWER cell over the island; the sea from NOAA OISST.
Recent years
Warmer and cooler years at sea.
Each month's sea temperature compared with its 1991–2020 average, in degrees.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | +0.8 | +0.8 | +0.5 | +0.3 | +0.6 | +0.2 | −0.7 | +0.2 | +1.1 | +1.9 | +1.2 | +1.0 |
| 2021 | +1.9 | +1.8 | +1.3 | +0.8 | +0.3 | +0.8 | +1.3 | +2.1 | +0.8 | −0.3 | ±0.0 | +0.5 |
| 2022 | +1.1 | +0.7 | +0.3 | −0.2 | +0.1 | −0.3 | −0.8 | ±0.0 | +0.6 | −0.3 | −0.1 | +0.9 |
| 2023 | +1.7 | +1.1 | +0.9 | +0.7 | −0.4 | −1.2 | +1.3 | +0.5 | +0.1 | +0.9 | +2.2 | +2.5 |
| 2024 | +2.5 | +1.1 | +1.2 | +1.6 | ±0.0 | +0.3 | +1.0 | +1.6 | +1.8 | +1.6 | +0.8 | +1.1 |
| 2025 | +1.2 | +1.3 | +0.8 | +0.1 | −0.3 | −0.1 | +0.9 | −0.7 | +0.2 | +0.2 | +1.6 | +2.2 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.




Nearby
More islands nearby.
About these numbers
| Names, area, population | Wikidata (Q393937) · CC0 |
|---|---|
| Outline | © OpenStreetMap contributors · ODbL |
| Sea temperature | NOAA OISST v2.1 · 1991–2020 |
| Climate | NASA POWER · 1991–2020 |
| Relief, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Beaches, ports, lighthouses, trails | © OpenStreetMap contributors · ODbL |
| Towns | GeoNames · CC BY 4.0 |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Beaches, mountains, lakes and waterfalls | Peakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0 |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
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