On the beach
Right now
Sample dataIllustrative conditions — the live Open-Meteo marine feed wasn't reachable, so these are deterministic placeholder values that will be replaced automatically once the feed is available.
7-day outlook
Sample dataModeled placeholder forecast for demonstration — will be replaced by a live marine-weather feed.
Sea temperature
Next 7 days, °C
Wave height
Next 7 days, metres
View as table
| Day | Sea temp (°C) | Wave height (m) |
|---|---|---|
| Wed 2 | 22.1 | 0.5 |
| Thu 3 | 21.6 | 0.5 |
| Fri 4 | 21.4 | 0.5 |
| Sat 5 | 21.7 | 0.5 |
| Sun 6 | 22.2 | 0.4 |
| Mon 7 | 22.6 | 0.4 |
| Tue 8 | 22.6 | 0.4 |
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 | 15 |
| Feb | 14 |
| Mar | 15 |
| Apr | 17 |
| May | 20 |
| Jun | 23 |
| Jul | 25 |
| Aug | 25 |
| Sep | 25 |
| Oct | 23 |
| Nov | 20 |
| Dec | 17 |
Location & nearby beaches
Nearby beaches
- 12 km
- 13 km
- 13 km
- 15 km
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.
Food, stays & town
- Nearest village: St. Felix - San Felice, about ~2.7 km away.
- 2 places to eat within 1 km Closest is Gasthaus Waldruhe, about ~320 m away.
What kind of beach is this?
With no facilities mapped nearby, this beach is usually on the quiet side even in season — worth knowing if you're after solitude, but also worth bringing your own water and shade.
Estimated from OpenStreetMap surroundings data (ODbL).
- A quiet swim
Is the water clean at Lago Di S. Maria (Tret) - Nord Vicino Isola?
Lago Di S. Maria (Tret) - Nord Vicino Isola sits on a stretch of coast classed as a lake bathing site, carrying an official EU Bathing Water rating of Excellent for the 2025 season. Under the EU Bathing Water Directive, national authorities test for intestinal enterococci and E. coli through the season and report the results the following spring — the 2025 rating was published in spring 2026, and 2026's won't follow 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. The nearest town, St. Felix - San Felice, is about ~2.7 km away.
That “Excellent” label comes from a full season of official water sampling, not a single test — it's one step on a four-point scale (Excellent, Good, Sufficient, Poor) reassessed once a year. Today's actual conditions can differ from the seasonal average, so for a live snapshot see the “Right now” and 7-day outlook panels above. There are 2 places to eat within a kilometre — Gasthaus Waldruhe is the closest, about ~320 m away.
Frequently asked questions
Should you swim at Lago Di S. Maria (Tret) - Nord Vicino Isola?
Yes — Lago Di S. Maria (Tret) - Nord Vicino Isola carries the top EU Bathing Water classification, Excellent, for 2025, and 11 of its 11 classified seasons have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
What is the sea temperature at Lago Di S. Maria (Tret) - Nord Vicino Isola today?
Treat the ~22°C above as illustrative only — Lago Di S. Maria (Tret) - Nord Vicino Isola's live marine feed was down when this page was generated, and the figure will be replaced with a real reading automatically once it's back. On the modeled climatology here, August usually runs warmest.
When should you plan a swimming trip to Lago Di S. Maria (Tret) - Nord Vicino Isola?
If you're planning around water temperature, July–September is the window to target — the modeled sea temperature is typically highest then. Within that window, August is typically the single warmest month.
Who measures the water quality rating, and how?
It's based on official water samples: authorities test for intestinal enterococci and E. coli through the season, then report the full-season results to the European Environment Agency each spring, which assigns one of four grades — Excellent, Good, Sufficient or Poor. A few national authorities, including Croatia's IZOR, also publish individual samples during the season itself, ahead of that annual report — that isn't yet available for Lago Di S. Maria (Tret) - Nord Vicino Isola.
What's nearby Lago Di S. Maria (Tret) - Nord Vicino Isola — parking, buses, or a ferry?
There's no parking mapped within 1.5 km of Lago Di S. Maria (Tret) - Nord Vicino Isola, so plan on a walk, or arrive early once it gets busy. The nearest town is St. Felix - San Felice, about ~2.7 km away.