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Castells

Boat Dive: Explore the Depths of the Sea in Spain

Discover the beauty of a boat dive in Spain's crystal-clear waters. With depths ranging from 27m in the upper part to 35 meters in the deepest section, this dive is perfect for advanced divers. The sea side offers an incredible underwater landscape with sandy areas on both sides of the bar.

To fully enjoy this dive, it is recommended to use nitrox due to the depth. The rocky areas are teeming with life, making it essential to carry an underwater light for better visibility. Keep an eye out for fascinating creatures such as moray eels, conger eels, lobsters, sunfishes, and rays during certain times.

Dive boats typically use the anchor as a reference point. To ensure an easy round trip, a marker buoy is placed at the anchor, and a reel line is deployed transversely across the entire rock bar. Depending on the current, you can choose to dive in the NE or SW direction, maintaining a depth of approximately 28-29 meters. Returning in a reciprocal direction will bring you back to the lowest allowable depth determined by the bar.

With a visibility of 12m and a maximum depth of 26m, this boat dive promises an unforgettable experience for divers seeking adventure in Spanish waters.

Diving Conditions Score for Castells

8.5
Very Good

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

Dive Site Overview for Castells

Depth

26m

Visibility

12m

Experience Level

advanced

Weather Conditions for Castells

Wave Height

0.48m

Wind Speed

6.7 m/s

Water Temp

24.5°C

Visibility

39.16km

Cloud Cover

0%

Wave Period

4.95s

Air Temperature

24.1°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Castells
Alpha

Dive Score Chart for Castells

Best time to dive: 17:00 with score 9.0457/10. Water conditions: Waves 0.48m, Wind 5.7 m/s.Best night dive time: 19:00 with score 8.778833333333335/10.

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

Sunrise at Castells: 06:00
Sunset at Castells: 18:00

Optimal diving conditions at Castells 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
17:00

Score: 9.0/10
Waves: 0.48m (5s), Wind: 5.7 m/s

🌙
Best Night
19:00

Score: 8.8/10
Waves: 0.48m, Wind: 3.1 m/s

Seasonal Analysis for Castells
Alpha

Historical patterns and best seasons for diving at Castells

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 Castells

Winter

Avg. Score: 8.9/10

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

Best Months for Castells

January
Score: 9.3
February
Score: 8.7
December
Score: 8.6

Ideal Conditions for Castells

Water Temp

Thermometer Emoji

26.0°C / 78.8°F

July

Visibility

Telescope Emoji

18.5m / 60.7ft

January

Wave Height

Wave Emoji

0.2m / 0.7ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Castells

Castells shows typical northern hemisphere patterns with July being the warmest month (26.0°C) and January the coldest (5.1°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 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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