Right now
Live conditions from Open-Meteo, refreshed hourly.
7-day outlook
7-day marine forecast from Open-Meteo.
Sea temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Sea temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 25.1 | 1.0 |
| Thu 3 | 24.9 | 1.5 |
| Fri 4 | 24.7 | 1.7 |
| Sat 5 | 24.5 | 1.5 |
| Sun 6 | 24.4 | 0.9 |
| Mon 7 | 24.4 | 0.8 |
| Tue 8 | 24.4 | 1.3 |
Water quality history
Official EEA classification, one rating per bathing season, 2015–2025 — real data reported by national authorities.
- 2015: Excellent2015
- 2016: Excellent2016
- 2017: Excellent2017
- 2018: Excellent2018
- 2019: Excellent2019
- 2020: Excellent2020
- 2021: Excellent2021
- 2022: Excellent2022
- 2023: Excellent2023
- 2024: Excellent2024
- 2025: Excellent2025
Excellent in the most recent season, and 11 of 11 classified years rated Excellent or Good.
- Excellent
- Good
- Sufficient
- Poor
- Not classified
View as table
| Year | Classification |
|---|---|
| 2015 | Excellent |
| 2016 | Excellent |
| 2017 | Excellent |
| 2018 | Excellent |
| 2019 | Excellent |
| 2020 | Excellent |
| 2021 | Excellent |
| 2022 | Excellent |
| 2023 | Excellent |
| 2024 | Excellent |
| 2025 | Excellent |
Typical sea temperature by month
Modeled estimatePlausible seasonal climatology derived from latitude, for illustration — not a measured average.
Monthly sea temperature
Typical range across the year, °C
View as table
| Month | Typical sea temp (°C) |
|---|---|
| Jan | 16 |
| Feb | 16 |
| Mar | 17 |
| Apr | 19 |
| May | 21 |
| Jun | 24 |
| Jul | 26 |
| Aug | 27 |
| Sep | 26 |
| Oct | 24 |
| Nov | 21 |
| Dec | 18 |
Location & nearby beaches
Nearby beaches
- Agios Giannis834 mSouth Aegean
- Agios Fokas2.8 kmSouth Aegean
- Kalamia5.0 kmSouth Aegean
- Stavros5.6 kmSouth Aegean
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- No parking is mapped within 1.5 km of the beach — expect a walk, or arrive early once the season gets busy.
- Bus stop: Άγιος Σώστης, about ~160 m away.
Food, stays & town
- Nearest village: Άγιος Σώστης, about ~200 m away.
- 2 places to stay mapped nearby Closest is Alexander, about ~410 m away.
What kind of beach is this?
This beach belongs to a small coastal village. It's usually calmer than a resort or town beach, though a popular village spot can still fill up on the best summer days.
Estimated from OpenStreetMap surroundings data (ODbL).
Is the water clean at Agios Sostis?
Agios Sostis is a coastal bathing site with an official EU Bathing Water rating of Excellent for the 2025 season — the highest official classification under the EU bathing-water assessment. That annual classification comes from the EU Bathing Water Directive: national authorities test for two indicator bacteria, intestinal enterococci and E. coli, throughout the bathing season, then report the full-season results to the European Environment Agency (EEA) the following spring — the 2025 season's rating was published in spring 2026, and the 2026 season won't be rated until spring 2027. In addition to that yearly rating, some national authorities — for Croatia, the national environmental authority — publish individual water sample results during the season itself, ahead of the annual report.
That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good. The most reliable swimming window here typically runs from July–September, with the sea usually at its warmest around August. Outside that window the water is cooler and often quieter. It's been a consistently reliable spot too — the rating has held at Excellent for 11 straight years. Άγιος Σώστης — the closest town — sits about ~200 m from here.
Worth remembering: “Excellent” isn't a live reading, it's an annual grade — Excellent, Good, Sufficient or Poor — set once a year from that season's water samples and describing the average, not this afternoon's conditions. For what the sea is doing right now, check the “Right now” panel and 7-day outlook above. It sits in South Aegean.
Frequently asked questions
Is Agios Sostis a safe beach for swimming?
It's about as safe as bathing water gets: Agios Sostis's 2025 EU rating is Excellent, the top tier on the scale, and 11 of 11 classified seasons have come back Excellent or Good. It's also held steady at Excellent for 11 straight years.
How cold or warm is the water at Agios Sostis today?
Checking in on Agios Sostis right now: the water is around 25°C, per the latest reading — the “Right now” panel above tracks it live. That's the reading right off South Aegean.
What's the ideal time of year to swim at Agios Sostis?
July–September is typically the most reliable swimming window, with the sea usually warmest in the second half of summer. That applies to the water around South Aegean.
What does the water quality rating actually measure?
National authorities sample the water for intestinal enterococci and E. coli bacteria through the bathing season and report the full-season results to the European Environment Agency each spring for the season just finished, which assigns one of four annual classifications — Excellent, Good, Sufficient or Poor — under the EU Bathing Water Directive. Some national authorities, including Croatia's IZOR, also publish individual in-season sample results ahead of that annual report.
Can you drive to Agios Sostis?
There's no parking mapped within 1.5 km of Agios Sostis, so plan on a walk, or arrive early once it gets busy. By bus, the nearest stop is Άγιος Σώστης, about ~160 m away. The nearest town is Άγιος Σώστης, about ~200 m away.