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 | 27.9 | 0.5 |
| Thu 3 | 28.0 | 0.2 |
| Fri 4 | 28.0 | 0.3 |
| Sat 5 | 28.1 | 0.3 |
| Sun 6 | 27.8 | 0.2 |
| Mon 7 | 28.0 | 0.2 |
| Tue 8 | 28.1 | 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 | 16 |
| Feb | 16 |
| Mar | 16 |
| Apr | 18 |
| May | 21 |
| Jun | 24 |
| Jul | 26 |
| Aug | 26 |
| Sep | 26 |
| Oct | 24 |
| Nov | 21 |
| Dec | 18 |
Location & nearby beaches
Nearby beaches
- Playa Dels Terrers1.5 kmCastellón
- Playa Torre de Sant Vicent2.1 kmCastellón
- Playa de L'Almadrava2.8 kmCastellón
- Playa del Serradal2.8 kmCastellón
Distances calculated as straight-line (haversine) from official coordinates.
Getting there & around
- Easy by car — there's parking close to the beach.
- Bus stop: Eurosol, about ~70 m away.
Food, stays & town
- Nearest village: Benicàssim / Benicasim, about ~2.4 km away.
- 8 places to eat within 1 km Closest is Pingüins Eurosol, about ~140 m away.
- 8 places to stay mapped nearby Closest is Hotel Intur Bonaire, about ~290 m away.
- 2 shops nearby, the closest about ~380 m away
What kind of beach is this?
This beach sits in a built-up resort setting, with hotels, restaurants and services clustered around it — a full-service stretch of coast that tends to be busy in peak season and quieter outside it.
Estimated from OpenStreetMap surroundings data (ODbL).
- Full-service days
Is the water clean at Playa de Heliopolis?
Thinking of swimming at Playa de Heliopolis? 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. There's parking about ~270 m from the beach.
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 Fast food. The nearest town, Benicàssim / Benicasim, is about ~2.4 km away.
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 Castellón. There are 8 places to eat within a kilometre — Pingüins Eurosol is the closest, about ~140 m away.
Frequently asked questions
Is it safe to go in the water at Playa de Heliopolis?
Yes, without much reservation. Playa de Heliopolis holds the top EU Bathing Water classification, Excellent, for 2025, and 11 of 11 classified seasons here have rated Excellent or Good. It's also held steady at Excellent for 11 straight years.
What is the sea temperature at Playa de Heliopolis today?
The latest reading puts the sea at Playa de Heliopolis at around 27°C — the “Right now” panel above has the full live picture. That's the reading right off Castellón. On the modeled climatology here, August usually runs warmest.
When is the best time to swim at Playa de Heliopolis?
For swimming, July–September is usually the best call — that's the modeled window when the sea here runs warmest. That applies to the water around Castellón. Within that window, August is typically the single warmest month.
How is bathing water quality actually assessed?
Behind the annual grade: a season of testing for intestinal enterococci and E. coli, reported to the European Environment Agency each spring under the EU Bathing Water Directive. A few countries, Croatia via IZOR included, also publish individual in-season samples ahead of that report, but Playa de Heliopolis doesn't have one published yet.
What's the easiest way to reach Playa de Heliopolis?
By car, it's easy — parking is right by the beach. By bus, the nearest stop is Eurosol, about ~70 m away. The nearest town is Benicàssim / Benicasim, about ~2.4 km away.