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Underwater Photo Conditions

Photo score ranking (Visibility 40pts + Sunlight 40pts + Water Temp 20pts = 100)

1
85Excellent
14~24m|40/40
Partly Cloudy|25/40
28°C|20/20
2
HachijojimaHachijojima
85Excellent
14~29m|40/40
Partly Cloudy|25/40
26°C|20/20
3
KashiwajimaKashiwajima
70Good
10~13m|25/40
Partly Cloudy|25/40
25°C|20/20
4
KoganezakiKoganezaki
70Good
11~18m|25/40
Partly Cloudy|25/40
25.3°C|20/20
5
70Good
9~12m|25/40
Partly Cloudy|25/40
23.3°C|20/20
6
70Good
9~12m|25/40
Partly Cloudy|25/40
24.6°C|20/20
7
YakushimaYakushima
70Good
16~30m|40/40
Overcast|10/40
25.4°C|20/20
8
YonaguniYonaguni
60Good
16~24m|40/40
🌧️Rain|0/40
25.7°C|20/20
9
KushimotoKushimoto
60Good
12~18m|40/40
🌦️Rain|0/40
28°C|20/20
10
KumomiKumomi
60Good
10~15m|25/40
Partly Cloudy|25/40
18.9°C|10/20
11
KeramaKerama
60Good
12~21m|40/40
🌦️Rain|0/40
22°C|20/20
12
IshigakiOkinawa
60Good
16~22m|40/40
🌧️Rain|0/40
26.9°C|20/20
13
EchizenEchizen
55Good
6~10m|10/40
Partly Cloudy|25/40
22.1°C|20/20
14
TajiriTajiri
55Good
9~19m|25/40
Partly Cloudy|25/40
14.6°C|5/20
15
FutoneTago
55Good
8~12m|10/40
Partly Cloudy|25/40
23.9°C|20/20
16
MiyakejimaMiyakejima
55Good
10~12m|25/40
Overcast|10/40
23.8°C|20/20
17
45Fair
15~18m|40/40
🌦️Rain|0/40
15.7°C|5/20
18
MikomotoMikomoto
45Fair
7~10m|10/40
Partly Cloudy|25/40
17.6°C|10/20
19
ItoTateyama
45Fair
10~18m|25/40
🌦️Rain|0/40
25.2°C|20/20
20
SadoSado
45Fair
8~16m|25/40
Overcast|10/40
16.8°C|10/20
21
FutoFuto
35Fair
8~14m|25/40
🌦️Rain|0/40
18.1°C|10/20
22
TagoTago
35Fair
7~9m|10/40
Partly Cloudy|25/40
---|0/20
23
BentenjimaKushimoto
35Fair
9~13m|25/40
🌦️Rain|0/40
20°C|10/20
24
ShirahamaShirahama
30Fair
7~11m|10/40
🌦️Rain|0/40
27.7°C|20/20
25
OkinoshimaKushimoto
30Fair
5~14m|10/40
🌦️Rain|0/40
22.4°C|20/20
26
女川女川
30Fair
6~12m|10/40
Overcast|10/40
21.6°C|10/20
27
HirasawaHirasawa
20Poor
8~10m|10/40
🌦️Rain|0/40
17.9°C|10/20
28
OmijimaOmijima
20Poor
5~10m|10/40
🌦️Rain|0/40
16.3°C|10/20
How scores are calculated (click to expand)

Visibility (max 40pts)

  • 15m+ → 40pts
  • 10-15m → 25pts
  • 5-10m → 10pts
  • <5m → 0pts

Sunlight (max 40pts)

  • Clear/sunny → 40pts (strong underwater light, vivid colors)
  • Partly cloudy → 25pts (soft light, good for macro)
  • Overcast → 10pts (dim but strobe compensates)
  • Rain → 0pts (dark surface, insufficient light underwater)

Water Temp (max 20pts)

  • 22-28°C → 20pts (comfortable, extended shooting time)
  • 16-22°C or 28°C+ → 10pts (slightly cold/warm)
  • <16°C → 5pts (cold fingers make camera operation difficult)