Northern Arch
Divers can expect to encounter an array of marine life at Northern Arch, including Kingfish, Snapper, and abundant schools of Blue Maomao. Additionally, the site is frequented by seasonal visitors such as Whale Sharks, Turtles, and other tropical creatures, making it a must-visit destination for diving enthusiasts.
While this site is primarily suited for advanced and expert divers, confident snorkelers can also have an amazing time here. However, it is crucial for divers to remain extremely aware of their depth, as the temptation to follow the fish down can be strong. The top 10m of Northern Arch is particularly captivating, offering sightings of vibrant sponges, John Dory, Perch, and more.
The ease of spotting stingrays congregating is highest during the warmer months, adding another dimension to the site's allure. Moreover, the currents at Northern Arch attract Bronze Whalers, who occasionally glide through the waters.
Located near Ann's Rock / Astrid's Wall in Northland, New Zealand, Northern Arch offers a spectacular underwater experience. With a visibility of 17m and a maximum depth of 25m, it promises an unforgettable diving adventure for those who are qualified to explore its depths.
Diving Conditions Score for Northern Arch
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Northern Arch
Depth
25m
Visibility
17m
Experience Level
Weather Conditions for Northern Arch
Wave Height
0.58m
Wind Speed
4.4 m/s
Water Temp
17.9°C
Visibility
46.42km
Cloud Cover
5%
Wave Period
7.85s
Air Temperature
15.7°C
Precipitation
0 mm
Dive Score Chart for Northern Arch
Best time to dive: 11:00 with score 8.62799376114082/10. Water conditions: Waves 0.5m, Wind 3.5 m/s.Best night dive time: 4:00 with score 7.4546458598726115/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Northern 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.
Score: 8.6/10
Waves: 0.5m (9.35s), Wind: 3.5 m/s
Score: 7.5/10
Waves: 0.6m, Wind: 18.3 m/s
Seasonal Analysis for Northern ArchAlpha
Historical patterns and best seasons for diving at Northern 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 Northern Arch
Summer
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Northern Arch
Ideal Conditions for Northern Arch
Water Temp
18.7°C / 65.7°F
March
Visibility
12.0m / 39.4ft
May
Wave Height
1.8m / 5.9ft
December
Wave Period
8.0s
January
Seasonal Insights for Northern Arch
Northern Arch follows southern hemisphere patterns with March being the warmest month (18.7°C) and October the coldest (12.9°C). The calmest conditions typically occur in December with average wave heights of 1.8m 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). May 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.
Last updated: 1 min. ago - Jun 22, 2026