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Le Grand Bleu

The dive site known as the "Grand Bleu" drop off is situated in front of Port Louis' marina, offering a depth range of 20 to 48 meters. As you drift along this stunning drop off, you'll be mesmerized by the vibrant blue surroundings and the diverse reef ecosystem. However, it's important to stay vigilant and watch out for the potential effects of narcosis, especially for deep-sea diving enthusiasts.

Prepare to encounter an awe-inspiring array of marine life at the "Grand Bleu" drop off. Eagle rays, kingfish, barracudas, and pterois are just a few of the fascinating creatures you may come across. The underwater landscape features intriguing wire corals, whip corals, barrel sponges, colonial ascidians, comatulas, lobsters, moray eels, schools of manioc, and spiny crabs.

The descent into the depths is gentle until you reach a depth of 30 meters, after which it becomes more pronounced with a distinct verticality leading down to 48 meters at the sandy bottom. This exceptional dive site is conveniently located just a short 5-minute boat ride away from the port, making it an ideal location for advanced and expert divers to hone their deep-sea diving skills. Keep in mind that there may be moderate currents to consider.

Exploring the reef reveals a mesmerizing array of crevices waiting to be discovered. Equipping yourself with a torch will allow you to peer into these intriguing nooks and crannies. Don't forget to also keep an eye on the open blue waters, as sightings of eagle rays, large kingfish, and big barracuda are not uncommon.

When diving at this depth, it's crucial to manage your saturation levels carefully and adhere to the instructions provided by your diving director. Additionally, stay alert for any signs of narcosis in your dive buddy. Remember to apply the knowledge and skills acquired during your deep diving course, ensuring that you plan your dive in advance to maximize your experience.

The visibility at the "Grand Bleu" drop off is approximately 17 meters, allowing divers to fully appreciate the breathtaking underwater scenery. With a maximum depth of 37 meters, this dive site presents an exhilarating challenge for those seeking an unforgettable diving adventure. Located in France, specifically near Marina de Port-Louis, Rue Pasteur, Bourg de Port-Louis, Port-Louis, Pointe-à-Pitre, Guadeloupe, 97117, France.

Diving Conditions Score for Le Grand Bleu

8
Very Good

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

Dive Site Overview for Le Grand Bleu

Depth

37m

Visibility

17m

Experience Level

advanced
expert

Weather Conditions for Le Grand Bleu

Wave Height

0.88m

Wind Speed

19.4 m/s

Water Temp

28.3°C

Visibility

21.82km

Cloud Cover

13%

Wave Period

5.5s

Air Temperature

26°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Le Grand Bleu
Alpha

Dive Score Chart for Le Grand Bleu

Best time to dive: 6:00 with score 7.869033333333333/10. Water conditions: Waves 0.86m, Wind 18.3 m/s.Best night dive time: 0:00 with score 7.441633333333333/10.

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

Sunrise at Le Grand Bleu: 06:00
Sunset at Le Grand Bleu: 18:00

Optimal diving conditions at Le Grand Bleu 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: 7.9/10
Waves: 0.86m (5.35s), Wind: 18.3 m/s

🌙
Best Night
0:00

Score: 7.4/10
Waves: 0.8m, Wind: 20.6 m/s

Seasonal Analysis for Le Grand Bleu
Alpha

Historical patterns and best seasons for diving at Le Grand Bleu

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 Le Grand Bleu

Winter

Avg. Score: 9.3/10

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

Best Months for Le Grand Bleu

January
Score: 9.4
February
Score: 9.3
December
Score: 9.3

Ideal Conditions for Le Grand Bleu

Water Temp

Thermometer Emoji

26.8°C / 80.2°F

May

Visibility

Telescope Emoji

11.7m / 38.4ft

October

Wave Height

Wave Emoji

1.7m / 5.6ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Le Grand Bleu

Le Grand Bleu shows typical northern hemisphere patterns with June being the warmest month (27.7°C) and January the coldest (21.5°C). The calmest conditions typically occur in January with average wave heights of 1.7m 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). May is usually the driest month with 0.7mm 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 18, 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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