Greece
Satellite: Sentinel-2 cloudless 2017 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
27.4km²
Area
45km
Coastline
593m
Highest point
26°C
Warmest sea
August
45km
To the mainland
When to go to Halki
Best for the beach from July to September.
The sea is warmest in August (26 °C) and coolest in March (17 °C). Comfortable swimming (21 °C or more): from June to November.
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.
Island in Greece
Halki is an island in Greece. It covers 27.4 km², with 45 km of coastline. Its highest point rises to 593 m. The nearest mainland is 45 km away.
Getting there
- Rhodes International Airport "Diagoras" (RHO)nearest airport with scheduled flights · 50 km in a straight lineCar hire at RHO airport (Rhodes)Discover Cars · Affiliate link↗
- FerriesChalki - Tilos, Symi - Chalki, Karpathos - Chalki, Karpathos (Diafani) - Chalki
- 45 km from the mainlanddistance to the nearest continental coast
- From July to Septemberbest 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 Halki.
- 3beachesKania
- 3ferry terminalsNissos Halki ticket office, Alko Fedon ticket office
- 2named peaksTrachia
- 6ruins and archaeological sitesKefales, Agia Pelagia, Kapari and 3 more
- 1waymarked walking routesEmborio - Aretta beach
- 2hotels, guesthouses and apartments
- 16restaurants, 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
Halki in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Halki, each with its own numbers.
3beaches and covesCoastya
1mountainPeakyas
Beach with the warmest sea
25.8°C
Giáli
sea in the warmest month · according to Coastya
The shape of the land.
On average the island stands 216 m above the sea. 52 % of it is below 200 m.
- 19 %0–50 m
- 33 %50–200 m
- 45 %200–500 m
- 4 %500–1,000 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
- Chálkino 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) | 15 | 15 | 16 | 18 | 21 | 24 | 26 | 27 | 26 | 23 | 20 | 17 |
| Night low (°C) | 14 | 13 | 14 | 16 | 19 | 22 | 24 | 25 | 24 | 21 | 18 | 15 |
| Sea (°C) | 18 | 17 | 17 | 17 | 19 | 22 | 24 | 26 | 25 | 23 | 21 | 19 |
| Rain (mm) | 140 | 96 | 52 | 33 | 17 | 5 | 2 | 2 | 15 | 46 | 77 | 134 |
| Wet days | 14 | 12 | 9 | 7 | 5 | 1 | 0 | 0 | 2 | 7 | 9 | 14 |
| Sun h/day | 4.7 | 5.6 | 7.6 | 9.4 | 11.0 | 12.7 | 13.0 | 11.9 | 10.3 | 8.1 | 6.2 | 4.6 |
| Wind (km/h) | 25 | 25 | 23 | 21 | 18 | 21 | 25 | 24 | 23 | 20 | 20 | 24 |
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 | +0.4 | +0.3 | +0.1 | +0.2 | +0.6 | +0.1 | +0.3 | +0.1 | +1.6 | +1.1 | +1.3 | +2.0 |
| 2021 | +1.5 | +0.9 | +0.9 | +0.7 | +0.8 | −0.1 | +0.5 | +1.0 | +0.1 | +0.1 | +0.5 | +0.5 |
| 2022 | +0.9 | +0.7 | +0.4 | +0.2 | +0.1 | +0.4 | +0.5 | +0.6 | +0.1 | −1.0 | +0.1 | +1.2 |
| 2023 | +1.8 | +0.8 | +0.6 | +0.4 | −0.1 | −0.1 | +1.1 | +1.4 | +2.0 | +2.1 | +2.3 | +1.7 |
| 2024 | +2.1 | +1.0 | +1.0 | +1.3 | +0.5 | +1.3 | +2.0 | +1.8 | +0.8 | +0.7 | +1.0 | +1.3 |
| 2025 | +1.0 | +1.1 | +0.7 | +0.3 | +0.5 | +0.6 | +2.0 | +0.6 | +1.0 | +0.5 | +1.3 | +1.4 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
About these numbers
| Names, area, population | Wikidata (Q917162) · 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 | Coastya, Peakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; NOAA OISST |
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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