Sea View — Mirissa Beach

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

Ocean Viewing Index

Updated · Oct 25, 2026 00:18

Reference time: local noon · 11:51 (Asia/Colombo)

Estimated
58
Fair

Fair conditions. Sea color may appear muted.

Sub-Index Breakdown

Six dimensions feed the overall Ocean Viewing Index.

  • Sea Color
    Clear blue-green · hue
    72.4
  • Clarity
    Very clear (below 1.5 NTU) · NTU
    100
  • Visibility
    Under 8 m · m
    4.1
  • Sea State
    Light breeze (2-3) · Beaufort
    65.4
  • Lighting
    Low / harsh light · lux
    44
  • Water Quality
    index
    —

Sea Color

Observed Oct 25, 2026

Climatology
Blue — Clear
#1e5fa8
Turbidity
12.80 NTU
Chlorophyll
0.62 mg/m³

FU=4, hue=197.1°, Kd490=0.132

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
#0284c7

Cloudy/hazy conditions darken the apparent color

Noon11:51
Natural sea color
#1e5fa8

Cloudy/hazy conditions darken the apparent color

Afternoon15:00
Deep blue
#1e3a6e

Cloudy/hazy conditions darken the apparent color

Dusk18:00
Deep indigo (low light)
#1e3a6e

Cloudy/hazy conditions darken the apparent color

Local noon · 11:51 (Asia/Colombo)

7-Day OVI Trend

Forecast ocean viewing conditions for the coming week.

Best on Fri: Viewing conditions are Good; 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.