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Rummu quarry

Rummu is a unique diving spot located in Estonia. This submerged limestone quarry holds a fascinating history as a former Soviet prison. Now, it offers divers the opportunity to explore the underwater wonders of a natural area transformed by groundwater. The quarry is nestled beside a spoil tip, providing a picturesque setting for underwater explorations.

Diving at Rummu offers an ideal experience for divers of all levels, particularly beginners. With a maximum depth of 8 meters and mostly diving at depths between 5-7 meters, it provides a safe and accessible underwater adventure. The visibility in the quarry averages around 8 meters, allowing divers to admire the intriguing aquatic landscape.

One of the highlights of diving in Rummu is the diverse wildlife that thrives in this underwater oasis. Keep an eye out for majestic wild cranes passing through during their migrations. The plant life beneath the surface is equally captivating, encompassing everything from wild apple trees to orange-berried buckthorn. A kaleidoscope of wildflowers adds bursts of color to the underwater scenery.

When planning your dive at Rummu, you'll find convenient access from Haapsalu mnt, Rummu alevik, Rummu, Lääne-Harju vald, Harju maakond, 76106, Estonia. This prime location makes it easy for divers to reach this captivating dive site and embark on an unforgettable underwater journey.

Discover the allure of Rummu and immerse yourself in the hidden treasures that lie beneath the tranquil waters. Whether you are a seasoned diver or a beginner seeking a memorable adventure, this Estonian dive site promises a remarkable experience for all.

Diving Conditions Score for Rummu quarry

6
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 Rummu quarry

Depth

8m

Visibility

8m

Experience Level

beginner

Weather Conditions for Rummu quarry

Wave Height

0.48m

Wind Speed

7.6 m/s

Water Temp

17.3°C

Visibility

54.4km

Cloud Cover

90%

Wave Period

3.45s

Air Temperature

12°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Rummu quarry
Alpha

Dive Score Chart for Rummu quarry

Best time to dive: 9:00 with score 7.343695238095238/10. Water conditions: Waves 0.32m, Wind 12.6 m/s.Best night dive time: 22:00 with score 7.585023076923076/10.

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

Sunrise at Rummu quarry: 06:00
Sunset at Rummu quarry: 18:00

Optimal diving conditions at Rummu quarry 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
22:00

Score: 7.6/10
Waves: 0.32m (3.25s), Wind: 2.5 m/s

🌞
Safest Overall
9:00

Score: 7.3/10
Waves: 0.32m (2.8s), Wind: 12.6 m/s

🌞
Best Day
9:00

Score: 7.3/10
Waves: 0.32m, Wind: 12.6 m/s

Seasonal Analysis for Rummu quarry
Alpha

Historical patterns and best seasons for diving at Rummu quarry

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 Rummu quarry

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 Rummu quarry

December
Score: 8.4
January
Score: 8.3
February
Score: 8.0

Ideal Conditions for Rummu quarry

Water Temp

Thermometer Emoji

18.4°C / 65.1°F

August

Visibility

Telescope Emoji

15.8m / 51.8ft

November

Wave Height

Wave Emoji

0.9m / 3.0ft

December

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Rummu quarry

Rummu quarry shows typical northern hemisphere patterns with August being the warmest month (18.4°C) and December the coldest (-7.1°C). The calmest conditions typically occur in December with average wave heights of 0.9m and wave periods of 8.0s. The most comfortable wave conditions are in December 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 December to February, 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 23, 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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