Alonnisos
Alonnisos is a quiet Greek island in the Northern Sporades, known for its marine park, monk seals and pine-covered hills.
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Alonnisos is a Greek island in the Aegean Sea and the third largest of the Northern Sporades, after Skiathos and Skopelos. It lies about 3 km east of Skopelos, across a strait of roughly 2 nautical miles, and covers about 64.5 square km. Most of the island is limestone. The north is hilly, while the flatter south holds the villages. The main port, Patitiri, is in the southeast, with ferries, catamarans and hydrofoils sailing to Volos, Thessaloniki, Skiathos and Skopelos.
Visitors go for the quiet and the sea. The Alonnisos Marine Park, created in 1992, protects the Mediterranean monk seal and other wildlife, and the Sporades National Marine Park is based at the north end of the island. Boat trips reach the Blue Cave on the northeast coast, which can only be reached by sea. Chora, the old village in the south, was rebuilt after the 1965 earthquake, and its restored stone houses are now used for tourist accommodation. The island suits a slow holiday of beaches, boat days and walks.
Alonnisos in five
- Fly to Skiathos, then take the boatSkiathos has the nearest airport, and boats link it to Skopelos and Alonnisos. Check the season's timetable, since hydrofoils and ferries run more often in summer.Skiathos
- Choose Patitiri for ferries and Old Alonnisos for viewsPatitiri is the port, with shops and boats. The old village (Hora) above it has views over the sea and a quieter feel, but is up a steep road.
- Book a boat trip into the marine parkThe Alonnisos Northern Sporades marine park protects Mediterranean monk seals, so boat tours keep their distance. Choose an operator that follows park rules and avoid peak midday heat.
- Hike the old paths in spring or autumnWaymarked trails cross the pine hills and link villages. Carry water and a map, and avoid midday in July and August.
- Combine with Skopelos and SkiathosDay boats and ferries link the three islands, so a week can split between them. Check the summer timetable before you book rooms.Skopelos
Things to do in Alonnisos
See all attractions in Alonnisos
Need to know
- Airport
- Skiathos (JSI), then ferry or hydrofoil to Alonnisos
- Getting there
- Ferry or hydrofoil via Skiathos, Skopelos or Volos
- Getting around
- Local bus, taxi, boat or rental car; many villages are on foot
- Best base
- Patitiri for transport; Steni Vala or Old Alonnisos for quiet
- Time needed
- 3–5 days; longer for hiking and boat days
Weather by month
- Rainy days
- Best
- Good
- Mixed
- Poor
- JanuaryPartly cloudy12 rainy daysHigh12°Low9°Cool, quietJanuaryPartly cloudy
Poor
- High
- 12°
- Low
- 9°
- Precipitation
- 143 mm
- Rainy days
- 12
- Snowy days
- 0
- Days with storms
- 0
Cool, quiet
- FebruaryPartly cloudy10 rainy daysHigh13°Low10°Cool, quietFebruaryPartly cloudy
Mixed
- High
- 13°
- Low
- 10°
- Precipitation
- 89 mm
- Rainy days
- 10
- Snowy days
- 0
- Days with storms
- 0
Cool, quiet
- MarchPartly cloudy10 rainy daysHigh14°Low11°Mild, closedMarchPartly cloudy
Mixed
- High
- 14°
- Low
- 11°
- Precipitation
- 86 mm
- Rainy days
- 10
- Snowy days
- 0
- Days with storms
- 0
Mild, closed
- AprilClear7 rainy daysHigh16°Low13°Spring, hikingAprilClear
Good
- High
- 16°
- Low
- 13°
- Precipitation
- 62 mm
- Rainy days
- 7
- Snowy days
- 0
- Days with storms
- 0
Spring, hiking
- MayClear7 rainy daysHigh20°Low17°Warm, hikingMayClear
Best
- High
- 20°
- Low
- 17°
- Precipitation
- 48 mm
- Rainy days
- 7
- Snowy days
- 0
- Days with storms
- 0
Warm, hiking
- JuneClear3 rainy daysHigh25°Low22°Warm seaJuneClear
Best
- High
- 25°
- Low
- 22°
- Precipitation
- 31 mm
- Rainy days
- 3
- Snowy days
- 0
- Days with storms
- 0
Warm sea
- JulyClear2 rainy daysHigh28°Low25°Hot, busyJulyClear
Best
- High
- 28°
- Low
- 25°
- Precipitation
- 38 mm
- Rainy days
- 2
- Snowy days
- 0
- Days with storms
- 0
Hot, busy
- AugustClear3 rainy daysHigh28°Low25°Hot, boats fullAugustClear
Best
- High
- 28°
- Low
- 25°
- Precipitation
- 26 mm
- Rainy days
- 3
- Snowy days
- 0
- Days with storms
- 0
Hot, boats full
- SeptemberClear6 rainy daysHigh25°Low22°Warm sea, calmSeptemberClear
Best
- High
- 25°
- Low
- 22°
- Precipitation
- 117 mm
- Rainy days
- 6
- Snowy days
- 0
- Days with storms
- 0
Warm sea, calm
- OctoberClear7 rainy daysHigh21°Low18°Mild, quietOctoberClear
Best
- High
- 21°
- Low
- 18°
- Precipitation
- 55 mm
- Rainy days
- 7
- Snowy days
- 0
- Days with storms
- 0
Mild, quiet
- NovemberPartly cloudy9 rainy daysHigh17°Low15°Mild, closingNovemberPartly cloudy
Mixed
- High
- 17°
- Low
- 15°
- Precipitation
- 88 mm
- Rainy days
- 9
- Snowy days
- 0
- Days with storms
- 0
Mild, closing
- DecemberPartly cloudy12 rainy daysHigh14°Low11°Cool, closedDecemberPartly cloudy
Poor
- High
- 14°
- Low
- 11°
- Precipitation
- 139 mm
- Rainy days
- 12
- Snowy days
- 0
- Days with storms
- 0
Cool, closed
Average daily high and low in Alonnisos, 2016–2025. Rainy day: 1 mm of rain or more.
Right now in Alonnisos
Local time, today's weather and the exchange rate, refreshed through the day.
18
- Feels like
- 17°
- Humidity
- 76%
- Wind
- 10 km/h
- Chance of rain
- 90%
Alonnisos
10:47 PM
Monday, November 2
- Today18°16°90%Monday: Rain. High 18°, Low 16°. Chance of rain 90%.
- Tue21°16°58%Tuesday: Rain. High 21°, Low 16°. Chance of rain 58%.
- Wed17°15°33%Wednesday: Rain. High 17°, Low 15°. Chance of rain 33%.
- Thu15°13°45%Thursday: Cloudy. High 15°, Low 13°. Chance of rain 45%.
- Fri13°12°3%Friday: Cloudy. High 13°, Low 12°. Chance of rain 3%.
- Sat13°12°5%Saturday: Partly cloudy. High 13°, Low 12°. Chance of rain 5%.
- Sun14°13°5%Sunday: Cloudy. High 14°, Low 13°. Chance of rain 5%.
Updated 06:29 PM local time · Powered by WeatherAPI.com · Weather data by Open-Meteo.com
Day trips by train
Before you go to Alonnisos
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Rules for Alonnisos, checked
- Greece is in the Schengen Area. Check entry requirements on the Greek Ministry of Foreign Affairs site (mfa.gr) before you fly.Source
- Non-EU visitors can be fingerprinted and have their photo taken at the border under the EU Entry/Exit System. Check the European Commission's current EES guidance before you travel.
- Monk seals live around Alonnisos and the Alonnisos Marine Park protects them. Keep your distance from them and check the park's current rules before you boat.
- The Blue Cave is reachable only by sea. Book a boat trip with a named operator and ask about its safety rules before you go.
Plan around Alonnisos
Athens, the islands and the mainland
Read the guideSkiathosThe Sporades gateway with the airport
Read the guideSkopelosA green island with a hilltop town
Read the guideGreek IslandsHow to choose between the island groups
Read the guidePelion PeninsulaThe mainland coast where Sporades ferries leave
Read the guideAlonnisos FAQ
How do you get to Alonnisos?
Fly to Skiathos (or Thessaloniki or Athens), then take a ferry or hydrofoil via Skopelos, or a ferry from Volos or Agios Konstantinos. Check the season's schedule before booking.
Is Alonnisos worth visiting?
Yes if you want a quiet, green island with hiking and boat days. It has few clubs and big resorts, which is the point. Skip it for a lively beach trip.
What is the Alonnisos marine park?
The National Marine Park of Alonnisos Northern Sporades is a protected area where Mediterranean monk seals live. Boat tours follow rules to protect wildlife, so choose a registered operator.
How many days do you need in Alonnisos?
Three to five days covers the villages, a boat tour and a hike. Longer works if you want to slow down or combine with Skopelos and Skiathos.
When is the best time to visit Alonnisos?
May to June and September to early October, for warm sea and open boats without peak crowds. July and August are hot and busy; winter is quiet and some businesses close.