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Žernovka - lom

Welcome to the Žernovka Quarry, a hidden gem located near Prague, Czechia. This picturesque dive site offers a unique experience for divers who appreciate the beauty of underwater exploration. As a responsible and self-sufficient dive spot, we operate on a trust-based system without any on-site staff or diving facilities.

Upon arrival, you'll find a designated area where you can set up your gear conveniently. The quarry provides easy access to the water via stairs, allowing you to embark on your diving adventure seamlessly. However, please note that the entrance leads directly into deep water, making it unsuitable for complete beginners.

Once submerged, you'll be greeted by the enchanting sight of pike and schools of small fish gracefully swimming near the surface at shallower depths. With a maximum depth of 14m and a visibility of approximately 4m, Žernovka Quarry offers divers of all levels an opportunity to explore its underwater wonders. Whether you are a beginner or an advanced diver, you'll find something captivating in the depths of this quarry.

To ensure a hassle-free visit, the quarry operates on a prior arrangement basis. Simply contact the quarry operator, Koželák, at 737 77 63 63 to obtain the lock code that secures the entrance gate. The entrance itself is located near the road sign labeled "end of Zernovka village." While parking can be a bit challenging, exercise caution and consider parking along the fence or by the nearby woods for convenience.

After your dive, please remember to lock the gate with the provided lock, ensuring the code remains undisclosed. As a safety measure, we kindly request that you send a text message to notify us of your well-being and, if possible, include a visibility report. Your safety is our top priority, and your feedback is invaluable to us.

For the privilege of diving in the quarry, we charge a fee of 100 CZK per person, per day. The cash box is conveniently located in the corner of the changing area, identifiable by the hole in the board and the attached tube. Please place your payment in the plastic tube before placing it in the cash box.

Embark on a memorable diving experience at the Žernovka Quarry, where trust, beauty, and underwater exploration merge to create an unforgettable adventure. Explore the depths and immerse yourself in the tranquil waters of this remarkable dive site.

Diving Conditions Score for Žernovka - lom

7.1
Good

Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Žernovka - lom

Depth

14m

Visibility

4m

Experience Level

beginner
advanced

Weather Conditions for Žernovka - lom

Wave Height

1m

Wind Speed

6.3 m/s

Water Temp

18°C

Visibility

41.28km

Cloud Cover

61%

Wave Period

8s

Air Temperature

24.8°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Žernovka - lom
Alpha

Dive Score Chart for Žernovka - lom

Best time to dive: 12:00 with score 8.113333333333333/10. Water conditions: Waves 1m, Wind 4 m/s.Best night dive time: 21:00 with score 7.933333333333333/10.

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

Sunrise at Žernovka - lom: 06:00
Sunset at Žernovka - lom: 18:00

Optimal diving conditions at Žernovka - lom 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
12:00

Score: 8.1/10
Waves: 1m (8s), Wind: 4 m/s

🌙
Best Night
21:00

Score: 7.9/10
Waves: 1m, Wind: 0.8 m/s

Seasonal Analysis for Žernovka - lom
Alpha

Historical patterns and best seasons for diving at Žernovka - lom

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 Žernovka - lom

Winter

Avg. Score: 8.2/10

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

Best Months for Žernovka - lom

December
Score: 8.6
January
Score: 8.3
March
Score: 8.1

Ideal Conditions for Žernovka - lom

Water Temp

Thermometer Emoji

19.4°C / 66.9°F

June

Visibility

Telescope Emoji

16.7m / 54.8ft

November

Wave Height

Wave Emoji

0.7m / 2.3ft

March

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Žernovka - lom

Žernovka - lom shows typical northern hemisphere patterns with June being the warmest month (19.4°C) and December the coldest (-2.9°C). The calmest conditions typically occur in March with average wave heights of 0.7m and wave periods of 8.0s. The most comfortable wave conditions are in March 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). March is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during March to May, 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 20, 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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