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Tres Marias

Shallow Bay, located a short boat ride away from San Carlos Marina in Mexico, is a fantastic dive site with a unique volcanic topography. The area features a rocky shoreline that transitions into a sandy bottom as you move further away from the shore.

Divers exploring Shallow Bay will have the opportunity to encounter a variety of local fish and invertebrates. Some of the species commonly seen include Moray Eels, Sergeant Majors, Angelfish, scissortails, Sea Stars, Urchins, and Sea Cucumbers.

With visibility reaching up to 8 meters and a maximum depth of 14 meters, this dive site is suitable for divers of all levels, including beginners. Its close proximity to El Tomate, Guaymas, Sonora, 85506, Mexico makes it easily accessible for divers looking to explore the underwater wonders of the area. So, book your dive at Shallow Bay and embark on an unforgettable diving adventure in Mexico.

Diving Conditions Score for Tres Marias

6.2
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 Tres Marias

Depth

14m

Visibility

8m

Experience Level

beginner

Weather Conditions for Tres Marias

Wave Height

0.4m

Wind Speed

17.3 m/s

Water Temp

30.7°C

Visibility

19.7km

Cloud Cover

7%

Wave Period

5s

Air Temperature

32.4°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Tres Marias
Alpha

Dive Score Chart for Tres Marias

Best time to dive: 6:00 with score 8.338640251572325/10. Water conditions: Waves 0.58m, Wind 2.5 m/s.Best night dive time: 5:00 with score 7.419094871794871/10.

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

Sunrise at Tres Marias: 06:00
Sunset at Tres Marias: 18:00

Optimal diving conditions at Tres Marias 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: 8.3/10
Waves: 0.58m (5.3s), Wind: 2.5 m/s

🌙
Best Night
5:00

Score: 7.4/10
Waves: 0.62m, Wind: 6.5 m/s

Seasonal Analysis for Tres Marias
Alpha

Historical patterns and best seasons for diving at Tres Marias

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 Tres Marias

Winter

Avg. Score: 10.0/10

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

Best Months for Tres Marias

January
Score: 10.0
February
Score: 10.0
March
Score: 10.0

Ideal Conditions for Tres Marias

Water Temp

Thermometer Emoji

22.8°C / 73.0°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 Tres Marias

Tres Marias shows typical northern hemisphere patterns with June being the warmest month (22.8°C) and December the coldest (18.8°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 19, 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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