Reef Explorers

Alonissos & Northern Sporades

Diving in Greece

7 documented dive sites, 1 of them for Open Water divers. Known for crustaceans, cuttlefish and nudibranchs.

Good months
May–Oct
Levels
Open Water, Advanced, Experienced
Nearest airport
JSI

When to go

Pick a month: the diving season, from published sources, and the typical weather.

Pick a month

  • Best
  • Good
  • Possible
  • Closed
  • Not documented yet

Alonissos & Northern Sporades in October

Good season
Sea
23 °C
at the surface
Air
21 °C
17 °C at night
Rain
40 mm
average for the year
Wind
15 km/h
on average

Exposure suit: 3 mm full suit · if you feel the cold: 5 mm full suit. How we choose

Typical weather, not a forecast: averages for 2021–2025 (air, rain, wind) and 2023–2025 (sea), data from Open-Meteo (ERA5 / Copernicus, Météo-France). Covers an area of roughly 10 to 25 km around the destination.

Compare with another destination

The Peristera underwater museum is dived by reservation from May to October; the Christoforos wreck off Skopelos can be dived all year.

Source: visitgreece.gr

Dive sites in Alonissos & Northern Sporades

From the easiest to the most demanding. Levels with a dashed outline are estimates we are still verifying.

In the National Marine Park of Alonissos, scuba diving is banned in Zone A, and no vessel may come within 3 nautical miles (about 5.6 km) of Piperi. The Peristera wreck is open only to Advanced Open Water divers accompanied by a certified dive centre, May–October.

Open Water friendly

usual dive down to 18 m1 site

Marine life

When the big encounters happen, month by month.

Reported here, season not documented yet:

  • Crustaceans
  • Cuttlefish
  • Nudibranchs
  • Octopus
  • Groupers
  • Moray eels
  • Dolphins
  • Seals
  • Corals

Where is Alonissos & Northern Sporades?

View on OpenStreetMapLocation: Alonnisos (Wikipedia)Map: Natural Earth
Nearest airport
JSI

Alonissos & Northern Sporades: frequently asked questions

When is the best time to dive Alonissos & Northern Sporades?
The good months to dive Alonissos & Northern Sporades are May–Oct. The Peristera underwater museum is dived by reservation from May to October; the Christoforos wreck off Skopelos can be dived all year.
Is Alonissos & Northern Sporades good for beginner divers?
Yes, partly: 1 of the 7 dive sites we document are suited to Open Water divers, including Glyfa Beach. The others need more experience or a higher certification.
What marine life can you see in Alonissos & Northern Sporades?
Divers regularly see crustaceans, cuttlefish, nudibranchs, octopus, groupers and moray eels.
How do you dive Alonissos & Northern Sporades?
The nearest airport is JSI.

About this page

Seasons and marine life come from the sources below. Site levels and depths marked as estimated come from our original catalogue and are being checked one by one. Conditions change: always confirm with a local dive centre.

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Photo: Sarah Lee on Unsplash
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