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Riana’s Arch

Welcome to Rianna's Arch, a must-visit dive site located in Ponta, Mozambique. This exceptional underwater wonder features a stunning swim-through that will leave you breathless. Prepare to be mesmerized by the diverse array of fish and macro life that inhabit this captivating locale.

From the elusive long-nose hawkfish to the intriguing scribbled pipe fish, red banded pipe fish, fierce two-bar anemone fish, and vibrant nudibranch, Rianna's Arch is teeming with marine treasures waiting to be discovered. Don't forget to adjust your camera settings to macro mode to capture the intricate details of this aquatic paradise.

As part of Kev's Ledge, Rianna's Arch is a relatively small yet awe-inspiring reef. Soft corals adorn the rocks, concealing an abundance of eels, nudi's, and shrimps. If luck is on your side, you may catch a glimpse of the ever-elusive long-nose hawkfish camouflaged within the tree coral on the northern side of the arch. Expect to encounter an array of vibrant reef fish, as well as the possibility of witnessing majestic pelagic creatures swimming overhead. The captivating blend of corals and rock formations creates an unforgettable visual spectacle that you simply cannot afford to miss.

With a visibility of 14 meters and a maximum depth of 25 meters, Rianna's Arch is an exhilarating dive suited for advanced divers. So, grab your gear, dive into the crystal-clear waters of Mozambique, and embark on a memorable underwater adventure at Rianna's Arch in Ponta.

Diving Conditions Score for Riana’s Arch

6.1
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 Riana’s Arch

Depth

25m

Visibility

14m

Experience Level

advanced

Weather Conditions for Riana’s Arch

Wave Height

1.46m

Wind Speed

15.1 m/s

Water Temp

24.7°C

Visibility

27.68km

Cloud Cover

0%

Wave Period

9.8s

Air Temperature

18.9°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Riana’s Arch
Alpha

Dive Score Chart for Riana’s Arch

Best time to dive: 6:00 with score 5.898787878787878/10. Water conditions: Waves 1.52m, Wind 17.1 m/s.Best night dive time: 3:00 with score 5.430406504065041/10.

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

Sunrise at Riana’s Arch: 06:00
Sunset at Riana’s Arch: 18:00

Optimal diving conditions at Riana’s Arch 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: 5.9/10
Waves: 1.52m (11s), Wind: 17.1 m/s

🌙
Best Night
3:00

Score: 5.4/10
Waves: 1.46m, Wind: 15.2 m/s

Seasonal Analysis for Riana’s Arch
Alpha

Historical patterns and best seasons for diving at Riana’s Arch

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 Riana’s Arch

Summer

Avg. Score: 8.8/10

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

Best Months for Riana’s Arch

July
Score: 9.0
June
Score: 8.8
August
Score: 8.7

Ideal Conditions for Riana’s Arch

Water Temp

Thermometer Emoji

23.0°C / 73.4°F

March

Visibility

Telescope Emoji

12.5m / 41.0ft

January

Wave Height

Wave Emoji

1.3m / 4.3ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Riana’s Arch

Riana’s Arch follows southern hemisphere patterns with March being the warmest month (23.0°C) and June the coldest (19.1°C). The calmest conditions typically occur in January with average wave heights of 1.3m 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). June 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 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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