Post Office Rock
Located near Southland, New Zealand, this dive site offers an incredible underwater experience. Divers can explore a stunning kelpy rocky reef that gradually descends to a sandy floor, reaching a maximum depth of 25 meters. This site is perfect for beginners as it is easy to navigate and provides a diverse range of marine life to admire, including wrasses, marblefish, tarakihi, dogharks, butterfly perch, pufferfish, and octopus. Lucky divers might even have the chance to spot the occasional seven gill shark. With a visibility of 11 meters and a maximum depth of 15 meters, this dive site guarantees an unforgettable underwater adventure.
Diving Conditions Score for Post Office Rock
4
Below AverageChallenging conditions, for experienced divers only.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Post Office Rock
Depth
15m
Visibility
11m
Experience Level
beginner
Weather Conditions for Post Office Rock
Wave Height
2.02m
Wind Speed
13 m/s
Water Temp
14.3°C
Visibility
19.06km
Cloud Cover
32%
Wave Period
10.7s
Air Temperature
9.7°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Post Office Rock
Alpha
Dive Score Chart for Post Office Rock
Best time to dive: 6:00 with score 5.465333333333334/10. Water conditions: Waves 2.58m, Wind 5.7 m/s.Best night dive time: 0:00 with score 4.8045333333333335/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Post Office Rock: 06:00
Sunset at Post Office Rock: 18:00
Optimal diving conditions at Post Office Rock 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
6:00Score: 5.5/10
Waves: 2.58m (10.45s), Wind: 5.7 m/s
Best Night
0:00Score: 4.8/10
Waves: 2.52m, Wind: 7.2 m/s
Seasonal Analysis for Post Office RockAlpha
Historical patterns and best seasons for diving at Post Office Rock
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 Post Office Rock
Summer
Avg. Score: 7.8/10
Summer offers the warmest water temperatures and generally favorable conditions for all levels of divers.
Best Months for Post Office Rock
July
Score: 8.1
August
Score: 7.8
June
Score: 7.6
Ideal Conditions for Post Office Rock
Water Temp
15.1°C / 59.2°F
March
Visibility
16.4m / 53.8ft
January
Wave Height
0.6m / 2.0ft
January
Wave Period
8.0s
January
Seasonal Insights for Post Office Rock
Post Office Rock follows southern hemisphere patterns with March being the warmest month (15.1°C) and July the coldest (7.3°C). The calmest conditions typically occur in January with average wave heights of 0.6m 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 0.5mm 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.
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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