Sea View — Yuigahama Beach

Today's Ocean Viewing Index and the six sub-indices behind it.

Ocean Viewing Index

Updated · Oct 25, 2026 02:09

Reference time: local noon · 11:25 (Asia/Tokyo)

Estimated
73
Good

Good conditions. Worth a visit.

Sub-Index Breakdown

Six dimensions feed the overall Ocean Viewing Index.

  • Sea Color
    Clear blue-green · hue
    69.6
  • Clarity
    Very clear (below 1.5 NTU) · NTU
    100
  • Visibility
    Under 8 m · m
    54.1
  • Sea State
    Light breeze (2-3) · Beaufort
    66.5
  • Lighting
    Golden hour, optimal · lux
    85.2
  • Water Quality
    index
    —

Sea Color

Observed Oct 25, 2026

Climatology
Blue — Clear
#2563eb
Turbidity
11.30 NTU
Chlorophyll
0.71 mg/m³

FU=5, hue=185.7°, Kd490=0.15

Sea color through the day

The FU index represents the inherent color around local noon (closest to the true sea color); perceived color varies slightly by time of day with light and weather.

Morning08:00
Soft green-blue
#0891b2

Cloudy/hazy conditions darken the apparent color

Noon11:25
Natural sea color
#2563eb

Cloudy/hazy conditions darken the apparent color

Afternoon15:00
Deep blue
#1e4d8c

Cloudy/hazy conditions darken the apparent color

Dusk18:00
Deep indigo (low light)
#1e4d8c

Cloudy/hazy conditions darken the apparent color

Local noon · 11:25 (Asia/Tokyo)

7-Day OVI Trend

Forecast ocean viewing conditions for the coming week.

Best on Sat: Viewing conditions are Excellent; aim for the golden hour just after sunrise or before sunset. Great for snorkeling and photography.

7-Day Sub-Index Forecast

Six dimensions of ocean viewing quality over the coming week.

Sea Color
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Sea color (Forel-Ule scale) — empty block means no verified data.