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Twann, Bielersee

Welcome to our dive site, a perfect destination for both beginner and advanced divers. This site is conveniently accessible via easy entry/exit points equipped with stairs and railings. For those seeking an alternative entrance, there is a jetty located behind the boat hall of the Lake Police where you can make a thrilling jump-in.

During your dive, you can expect to encounter a variety of aquatic life including pike, perch, and catfish. However, please note that the number of fish may be less during winter. On the bright side, you will have the opportunity to spot numerous crayfish.

Our dive site is not only great for recreational diving but also suitable for Open Water Diver (OWD) training. Additionally, it provides an ideal environment for honing your navigation skills. Once you've carefully descended the stairs (mind the slippery steps, hold onto the railing), you can embark on an exciting journey towards the east, leading to the captivating "canyons" of the Twannbach. The ground conditions in this area are particularly intriguing. Along the canyon, you will swiftly descend to a depth of 24 meters and then proceed along a small wall, heading west, before circling back at approximately 12 meters. As you explore the underwater landscape, you'll come across a small sailboat (gradually vanishing into the mud) located to the right of the entrance.

Please be aware that the dive site is situated in a public bathing area, so on weekends and during school holidays when the weather is splendid, expect a large number of people enjoying the nearby meadow. To conveniently access the entrance, park your vehicle in the available blue zone parking located on the opposite side of the railway. Please note that there are only six parking spaces available, which tend to fill up quickly on pleasant days. Thankfully, reaching the entrance is a breeze thanks to the underpass.

Key Information:
- Visibility: 4 meters
- Maximum depth: 20 meters
- Recommended Diver Level: Beginner and Advanced
- Location: Hauptstrasse, Bipschal, Brunnmühle, Ligerz, Biel/Bienne administrative district, Seeland administrative region, Bern, 2514, Switzerland

Divechamp.com is thrilled to offer you this remarkable dive site where you can embark on an unforgettable underwater adventure in the beautiful waters of Switzerland.

Diving Conditions Score for Twann, Bielersee

6.1
Above Average

Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Twann, Bielersee

Depth

20m

Visibility

4m

Experience Level

beginner
advanced

Weather Conditions for Twann, Bielersee

Wave Height

1m

Wind Speed

10 m/s

Water Temp

18°C

Visibility

15km

Cloud Cover

57.5%

Wave Period

8s

Air Temperature

20°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Twann, Bielersee
Alpha

Dive Score Chart for Twann, Bielersee

Best time to dive: 6:00 with score 7.113333333333333/10. Water conditions: Waves 1m, Wind 10 m/s.Best night dive time: 0:00 with score 6.613333333333333/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Twann, Bielersee: 06:00
Sunset at Twann, Bielersee: 18:00

Optimal diving conditions at Twann, Bielersee are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.

🌞
Best Overall
6:00

Score: 7.1/10
Waves: 1m (8s), Wind: 10 m/s

🌙
Best Night
0:00

Score: 6.6/10
Waves: 1m, Wind: 10 m/s

Seasonal Analysis for Twann, Bielersee
Alpha

Historical patterns and best seasons for diving at Twann, Bielersee

The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.

Monthly Dive Score Analysis - Seasonal Diving Conditions

Higher values indicate better diving conditions

Seasonal DiveScore Chart

This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.

Higher values indicate better diving conditions

Best Season for Twann, Bielersee

Winter

Avg. Score: 9.9/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Twann, Bielersee

January
Score: 10.0
February
Score: 9.9
December
Score: 9.9

Ideal Conditions for Twann, Bielersee

Water Temp

Thermometer Emoji

24.7°C / 76.5°F

June

Visibility

Telescope Emoji

20.1m / 65.9ft

October

Wave Height

Wave Emoji

0.2m / 0.7ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Twann, Bielersee

Twann, Bielersee shows typical northern hemisphere patterns with June being the warmest month (24.7°C) and December the coldest (20.7°C). The calmest conditions typically occur in January with average wave heights of 0.2m and wave periods of 8.0s. The most comfortable wave conditions are in January with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during January to March, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

Last updated: 1 min. ago - Jun 22, 2026

Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.

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