Posidonia
Peloponnese Region, Greece: Excellent water quality
Posidonia is a sandy beach in the Peloponnese Region, Greece, located 7.35 km from Corinth. It holds Blue Flag certification, awarded annually by the Foundation for Environmental Education for water quality and safety standards. The beach is open from July 1 to September 22. A…
Quick Overview
Plan Your Visit to Posidonia
The key facts before you go
About the Beach
What is Posidonia?
Posidonia is a sandy beach in the Peloponnese Region, Greece, located 7.35 km from Corinth. It holds Blue Flag certification, awarded annually by the Foundation for Environmental Education for water quality and safety standards. The beach is open from July 1 to September 22. A kiosk and drinking water are available on-site. April through June offer the most comfortable conditions, while July and August draw the largest crowds. Swimmers should take standard water safety precautions.
It sits alongside other certified beaches in Peloponnese Region, part of a broader network of other Blue Flag beaches in Greece certified annually by the Foundation for Environmental Education.
Sunrise, Sunset & Beach Direction
Posidonia faces south toward Ionian Sea. The best light for photography and swimming is typically in April, May, June. Direct sun hours follow that facing.
Planning
When to Go: Month by Month
| Month | Air Temp | Water Temp | Crowds |
|---|---|---|---|
| Jan | 9°C | 6°C | Low |
| Feb | 11°C | 8°C | Low |
| Mar | 12°C | 9°C | Low |
| Apr | 16°C | 13°C | Low |
| May | 21°C | 18°C | Low |
| Jun | 25°C | 22°C | Low |
| Jul | 28°C | 25°C | Med |
| Aug | 28°C | 25°C | High |
| Sep | 24°C | 21°C | Med |
| Oct | 20°C | 17°C | Low |
| Nov | 16°C | 13°C | Low |
| Dec | 12°C | 9°C | Low |
The best time to visit Posidonia is April, May, June. Air temperatures peak around 28.3°C in summer. Peak water temperature reaches 25.3°C in July.
How crowded does Posidonia get?Like most Blue Flag beaches in Greece, Posidonia sees its highest visitor numbers in July and August. The beach maintains a pleasant atmosphere even in peak season.
Is Posidonia open year-round?The beach itself is accessible year-round, though staffed facilities including lifeguards typically operate only during the official season (01-07 – 22-09). The Blue Flag is displayed during the certification period only.
The Water
Swimming and Beach Life at Posidonia
Is Posidonia safe to swim?Posidonia is Blue Flag certified, which requires meeting strict bathing water standards set by the EU Bathing Water Directive. Water quality is rated Excellent. The beach does not have lifeguards stationed on the beach. Swim with appropriate caution.
What is the water temperature at Posidonia?Peak water temperature at Posidonia reaches around 25.3°C in July, making it comfortable for swimming during the summer months. In winter (January), air temperatures average 9.4°C.
What is the beach like at Posidonia?Posidonia is a sandy beach on the Peloponnese Region coast of Greece. It meets all Blue Flag criteria for environmental management, water quality, safety, and facilities.
Does Posidonia have good facilities?As a Blue Flag certified beach, Posidonia meets the Foundation for Environmental Education's standards for facilities and services.
Posidonia sits on the Ionian Sea: explore all Blue Flag beaches on the Ionian.
Planning a trip to Greece? How Greece earns the most Blue Flags , our editorial guide to certified beaches across the country.
Transport
Getting to Posidonia
How do I get to Posidonia by car?Posidonia is approximately 7.35 km from Municipal Unit of Corinth. Follow local road signs to the beach. Check Google Maps or a local map for the most current directions.
What is the nearest airport to Posidonia?The nearest airport is Athens International Airport "El. Venizelos" (ATH), approximately 86.7 km away.
Can I get to Posidonia by public transport?Public transport options vary by season. Check local transport authority websites for current bus and train schedules connecting to Municipal Unit of Corinth. The nearest recorded bus stop is 1.4 km from the beach.
Is there a train to Posidonia?Posidonia lists Corinth as the nearest railway station, 3.92 km away. Check current timetables before travelling.
Nearby
Near Posidonia
Mapped toilets, bus stops, cafés, parking, and shops within about 500 m of Posidonia. Distances are walking-line estimates from the beach pin.
Map loads when you ask. Tiles stay off the first paint.
Map: OpenStreetMap (ODbL)
Cafés near Posidonia
- Rose Blossom Café 338 m
Source: © OpenStreetMap contributors (ODbL). Names and positions come from mapped OSM features. Confirm on site.
Practical Details
Practical Information
| At the Beach | |
| Entry | Free: no charge to access the beach |
|---|---|
| Lifeguards | ✗ |
| Disabled Access | ✗ No dedicated disabled access listed |
| Showers | ✗ |
| Toilets | ✗ |
| Official Season | 01 Jul – 22 Sep |
| Beach Type | Sandy beach |
| Parking | ✗ No parking listed nearby |
| Nearest supermarket | 1.9 km from the beach |
| Nearest bus stop | 1.4 km from the beach |
| Visiting Information | |
| GPS Coordinates | 37.9500°N, 22.9585°E |
| Water Quality | Excellent (EU Bathing Water Directive) |
| Blue Flag Operator | Foundation for Environmental Education (FEE), Greece |
Frequently Asked Questions
Posidonia FAQ
Is Posidonia suitable for children?
Posidonia has a child-friendly score of 2/10 based on Blue Flag certification criteria. As a certified beach in Greece, it meets international standards for safety, water quality, and environmental management.
Is Posidonia free to access?
Access to Posidonia is free. There are no entry fees to enter the beach. It is a Blue Flag certified beach in Peloponnese Region, Greece, recognised for meeting international standards for water quality and environmental management.
When is the best time to visit Posidonia?
The best time to visit Posidonia is April, May, June. The peak season typically runs High season: July, August, when weather conditions and facilities are at their best. Peak water temperature reaches around 25.3°C in July. Outside peak season, the beach is quieter but some facilities may be reduced.
What is the water quality at Posidonia?
Posidonia is Blue Flag certified, which requires meeting strict EU Bathing Water Directive standards. Water quality is rated Excellent. Blue Flag certification is awarded and reviewed annually by the Foundation for Environmental Education (FEE). Beaches must pass water quality tests throughout the season to retain their status.
How do I get to Posidonia?
Posidonia is located in Peloponnese Region, Greece. It is approximately 7.35 km from Municipal Unit of Corinth. The nearest airport is Athens International Airport "El. Venizelos" (ATH), 86.7 km away. By car is the most flexible option. Check local transport authority websites for current bus and train schedules to the area.
Are there cafés near Posidonia?
Yes. OpenStreetMap lists a café or restaurant near Posidonia, including Rose Blossom (338 m). Hours and seasonal opening are not verified here. Check on the day. © OpenStreetMap contributors (ODbL).
Explore More
Nearby Blue Flag Beaches
Editorial
From the Zeach Blog
Everything you need to know about what makes a beach qualify for Blue Flag status, from water quality to environmental education.
Read moreOur editorial team's pick of the standout Blue Flag beaches in Greece, rated for family friendliness, scenery, and facilities.
Explore GreeceWhat the flag actually means, how certification works, and why a Blue Flag is a genuinely reliable signal, not just a marketing tool.
Read moreSources
- Foundation for Environmental Education: Blue Flag programme
- FEE site listing for Posidonia
- Hellenic Society for the Protection of Nature (EEPF)
- European Environment Agency: bathing water quality
Last verified September 2026. National operator pages and FEE listings are the primary certification sources.