18.9°
Celsius
✅
Safe to swim
Sanitary rating: suitable. Test: Aug. 21, 2026, next: -.
Sanitary rating: history
| Test date | Rating | E. coli | Enterococci |
|---|---|---|---|
| Aug. 21, 2026 | Suitable for swimming | 12 | 2 |
| Aug. 4, 2026 | Suitable for swimming | 19 | 10 |
| July 14, 2026 | Suitable for swimming | 17 | 8 |
| June 23, 2026 | Suitable for swimming | 61 | 8 |
| Aug. 21, 2025 | Suitable for swimming | 49 | 28 |
| July 30, 2025 | Suitable for swimming | 70 | 14 |
| July 17, 2025 | Suitable for swimming | 26 | 14 |
| June 26, 2025 | Suitable for swimming | 15 | 5 |
Multi-year classification
| Year | Classification |
|---|---|
| 2025 | Unclassified |
Bathing season: June 27, 2026 - Aug. 30, 2026
On the beach
🏊 Lifeguard 🚻 Toilets 🗑️ Bins- Bathing season
- June 27, 2026 - Aug. 30, 2026
- Opening hours
- 9:30 - 17:30
- Shoreline length
- 99 m
- Operator
- Mieleński Ośrodek Sportu i Rekreacji Mielno ul. Słoneczna 9, 76-032 Mielno [email protected] 94 318 97 20
This bathing area is located in the coastal waters of the Baltic Sea within the following surface water body: Polish coastal waters of the Bornholm Basin. It is a new bathing area established in 2025. Following the 2025 summer season, the water was assessed as suitable for swimming. Download the bathing water profile
Frequently asked questions
Is it safe to swim in Mielno Pionierów?
Safe to swim. Sanitary rating: suitable.
What is the water temperature in Mielno Pionierów?
18.9°C (measured 21.08.2026).
Is there algae in Mielno Pionierów?
No algae bloom reported. Check the status regularly in season.
Average sea temperature by month
| Month | Average water temperature |
|---|---|
| January | 2.3°C |
| February | 1.7°C |
| March | 3.7°C |
| April | 7.2°C |
| May | 11.6°C |
| June | 16.9°C |
| July | 19.9°C |
| August | 20.3°C |
| September | 18.8°C |
| October | 13.5°C |
| November | 8.6°C |
| December | 4.6°C |
Multi-year averages from recent seasons - a rough guide to when the water is warmest.
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