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Grottos

Experience the awe-inspiring dive site of Nananu Passage located in the Western region of Fiji. Immerse yourself in the deep waters, starting at a depth of 6 meters and descending to an impressive 30 meters. Here, you will be captivated by the sight of stunning yellow soft coral pinnacles. Navigate through enchanting swim-throughs and encounter a diverse range of marine life, including magnificent barracuda and graceful reef sharks such as grey, blacktip, and whitetip. Be mesmerized by the vibrant bat fish, GT/jacks, Spanish mackerel, and wahoo. Marvel at the delicate nudibranchs, colorful soft and hard corals, beautiful sea fans, and playful anemone fish.

With a visibility of 19 meters and a maximum depth of 14 meters, Nananu Passage promises an unforgettable underwater adventure suitable for both beginners and advanced divers. Optimal diving conditions can be enjoyed during the incoming tide. This exceptional dive site is situated in the Vatulaca Reef region, just north of Volivoli Beach Resort. Whether you're a novice or an experienced diver, this area offers an array of remarkable dive sites tailored to cater to all interests and skill levels. Depending on your chosen site and the tide height, you can reach the dive location with a short 15 to 25-minute boat ride from the resort.

Prepare to delve into the depths, respect the ocean, and immerse yourself in the wonders of the underwater world at divechamp.com.

Diving Conditions Score for Grottos

8.6
Very Good

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

Dive Site Overview for Grottos

Depth

14m

Visibility

19m

Experience Level

beginner
advanced

Weather Conditions for Grottos

Wave Height

0.2m

Wind Speed

11.4 m/s

Water Temp

25.7°C

Visibility

43.64km

Cloud Cover

20%

Wave Period

6.75s

Air Temperature

22.3°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Grottos
Alpha

Dive Score Chart for Grottos

Best time to dive: 6:00 with score 9.446666666666665/10. Water conditions: Waves 0.32m, Wind 2.4 m/s.Best night dive time: 23:00 with score 8.609316438356165/10.

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

Sunrise at Grottos: 06:00
Sunset at Grottos: 18:00

Optimal diving conditions at Grottos 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: 9.4/10
Waves: 0.32m (5s), Wind: 2.4 m/s

🌙
Best Night
23:00

Score: 8.6/10
Waves: 0.18m, Wind: 6 m/s

Seasonal Analysis for Grottos
Alpha

Historical patterns and best seasons for diving at Grottos

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 Grottos

Summer

Avg. Score: 9.6/10

Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.

Best Months for Grottos

July
Score: 9.7
June
Score: 9.6
August
Score: 9.4

Ideal Conditions for Grottos

Water Temp

Thermometer Emoji

25.8°C / 78.4°F

April

Visibility

Telescope Emoji

12.0m / 39.4ft

June

Wave Height

Wave Emoji

1.7m / 5.6ft

December

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Grottos

Grottos follows southern hemisphere patterns with April being the warmest month (25.8°C) and October the coldest (22.4°C). The calmest conditions typically occur in December with average wave heights of 1.7m 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). June 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 - Jul 9, 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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