Kumomi
This dive site in Izu is highly sought after by divers. It is known for its numerous caves and rock formations, particularly between and around the prominent Ushitsukiwa rocks near the harbor.
These caves and crevices provide shelter for a diverse range of aquatic species, including dark-loving creatures like dandelions, lobsters, and red clams. Among the soft coral formations, you'll also encounter various types of snapper and butterflyfish. Venturing further offshore, you'll be amazed by the large schools of Japanese sardines, groupers, and the impressive kuei groupers.
Aside from the passable caves, there are several intriguing features to explore, including vertical holes and air-dome-shaped caverns. Inside these caves, you'll find an abundance of soft corals and spiny dogfish swimming about. Additionally, there is a pinnacle-shaped rock that emerges from the seabed at a depth of 60 meters and rises up to just 10 meters below the surface, providing a fantastic opportunity to observe large schools of fish.
Dive Information:
- Visibility: 11m
- Maximum depth: 19m
- Recommended diver levels: beginner, advanced, expert
- Country: Japan
- Nearest location: 雲見想い出岬, national route 136, Kumomi, Matsuzaki, Kamo County, Shizuoka Prefecture, 410-3696, Japan
These caves and crevices provide shelter for a diverse range of aquatic species, including dark-loving creatures like dandelions, lobsters, and red clams. Among the soft coral formations, you'll also encounter various types of snapper and butterflyfish. Venturing further offshore, you'll be amazed by the large schools of Japanese sardines, groupers, and the impressive kuei groupers.
Aside from the passable caves, there are several intriguing features to explore, including vertical holes and air-dome-shaped caverns. Inside these caves, you'll find an abundance of soft corals and spiny dogfish swimming about. Additionally, there is a pinnacle-shaped rock that emerges from the seabed at a depth of 60 meters and rises up to just 10 meters below the surface, providing a fantastic opportunity to observe large schools of fish.
Dive Information:
- Visibility: 11m
- Maximum depth: 19m
- Recommended diver levels: beginner, advanced, expert
- Country: Japan
- Nearest location: 雲見想い出岬, national route 136, Kumomi, Matsuzaki, Kamo County, Shizuoka Prefecture, 410-3696, Japan
Diving Conditions Score for Kumomi
7.2
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Kumomi
Depth
19m
Visibility
11m
Experience Level
beginner
advanced
expert
Weather Conditions for Kumomi
Wave Height
1.3m
Wind Speed
5.1 m/s
Water Temp
24.9°C
Visibility
30.32km
Cloud Cover
78%
Wave Period
10.35s
Air Temperature
22.4°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Kumomi
Alpha
Dive Score Chart for Kumomi
Best time to dive: 8:00 with score 7.69172925170068/10. Water conditions: Waves 1.24m, Wind 1.5 m/s.Best night dive time: 4:00 with score 7.584496732026144/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Kumomi: 06:00
Sunset at Kumomi: 18:00
Optimal diving conditions at Kumomi 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
8:00Score: 7.7/10
Waves: 1.24m (9.8s), Wind: 1.5 m/s
Best Night
4:00Score: 7.6/10
Waves: 1.16m, Wind: 0.5 m/s
Seasonal Analysis for KumomiAlpha
Historical patterns and best seasons for diving at Kumomi
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 Kumomi
Winter
Avg. Score: 8.4/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Kumomi
January
Score: 8.5
February
Score: 8.4
December
Score: 8.4
Ideal Conditions for Kumomi
Water Temp
26.1°C / 79.0°F
August
Visibility
12.0m / 39.4ft
October
Wave Height
2.0m / 6.6ft
November
Wave Period
8.0s
January
Seasonal Insights for Kumomi
Kumomi shows typical northern hemisphere patterns with August being the warmest month (26.1°C) and January the coldest (4.2°C). The calmest conditions typically occur in November with average wave heights of 2.0m and wave periods of 8.0s. The most comfortable wave conditions are in November 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 0.0mm of precipitation. For beginners, the best time to visit would be during November to January, 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 - Jul 7, 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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