On the beach
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 | 27.3 | 0.3 |
| Thu 3 | 26.9 | 0.5 |
| Fri 4 | 26.7 | 0.4 |
| Sat 5 | 26.7 | 0.2 |
| Sun 6 | 26.8 | 0.1 |
| Mon 7 | 26.6 | 0.4 |
| Tue 8 | 26.5 | 0.7 |
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 | 15 |
| Mar | 16 |
| Apr | 18 |
| May | 21 |
| Jun | 24 |
| Jul | 26 |
| Aug | 27 |
| Sep | 26 |
| Oct | 24 |
| Nov | 21 |
| Dec | 18 |
Location & nearby beaches
Getting there & around
- By car: there's parking about ~550 m from the beach.
- Bus stop: 5 Megali Ammos, about ~90 m away.
- Nearest ferry landing is about ~1.2 km away.
Food, stays & town
- Nearest town: Σκιάθος, about ~1.1 km away.
- 30 places to eat within 1 km Closest is Thessaloniki, about ~150 m away.
- 21 places to stay mapped nearby Closest is Aphrodite Skiathos, about ~80 m away.
- 9 shops nearby, the closest about ~520 m away
What kind of beach is this?
This is a town beach, woven into the everyday fabric of a city or larger settlement — expect company on warm days, especially through July and August, alongside easy access to shops and services.
Estimated from OpenStreetMap surroundings data (ODbL).
Is the water clean at Megali Ammos?
Thinking of swimming at Megali Ammos? The short answer: its official EU Bathing Water rating for 2025 is Excellent — the highest official classification under the EU bathing-water assessment. That rating is set once a year under the EU Bathing Water Directive, from a full season of testing for intestinal enterococci and E. coli reported to the European Environment Agency the following spring, so the 2025 season's grade appeared in spring 2026 and the 2026 season won't be graded 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. It's been a consistently reliable spot too — the rating has held at Excellent for 11 straight years. You can park about ~550 m away.
Looking to avoid the busiest weeks? The water is typically warmest around August, with the most reliable swimming window running July–September; outside that stretch you'll find a cooler sea but a quieter beach. That rating has been consistent: every one of the 11 classified seasons on record has come back Excellent or Good. On site you'll find Restaurant. Σκιάθος — the closest town — sits about ~1.1 km from here.
“Excellent” is one point on a four-step scale — Excellent, Good, Sufficient or Poor — assigned once per year from that season's water samples, not a live reading. It describes how the site performs on average across the season, not the exact water quality this afternoon; for day-to-day sea conditions, see the “Right now” and 7-day outlook panels above. There are 30 places to eat within a kilometre — Thessaloniki is the closest, about ~150 m away.
Frequently asked questions
Can you safely swim at Megali Ammos?
Yes. Its official 2025 EU Bathing Water rating is Excellent, the top classification, and 11 of the 11 classified seasons on record have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
How cold or warm is the water at Megali Ammos today?
Right now, the sea at Megali Ammos is measuring around 27°C; see the “Right now” panel above for the latest conditions. That's the reading right off Thessalia.
What's the ideal time of year to swim at Megali Ammos?
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 Thessalia.
What does the water quality rating actually measure?
The grade comes from a full season of official sampling for intestinal enterococci and E. coli, reported to the European Environment Agency each spring under the EU Bathing Water Directive, which assigns Excellent, Good, Sufficient or Poor. Some countries (Croatia, via IZOR) also publish individual in-season samples ahead of that report; Megali Ammos doesn't have that feed yet.
How do I get to Megali Ammos without a car?
By car, there's parking about ~550 m from the beach. By bus, the nearest stop is 5 Megali Ammos, about ~90 m away. There's a ferry landing about ~1.2 km from the beach. The nearest town is Σκιάθος, about ~1.1 km away.