Japan

Toshima City

Toshima City - photo 1

Photo by P C on Unsplash.

Toshima City sits within Tokyo, a major urban hub with limited direct diving within the city itself. Nearby diving options are mainly found in coastal areas of the Tokyo metropolitan region and along the Pacific coast. The city acts as a gateway for travelers to local dive centers around Tokyo Bay and the Izu and Bōsō peninsulas, where shallow reefs, walls, and wrecks are explored by weekend divers. Inland, Lake Hinuma in the broader prefecture offers freshwater diving opportunities for training and practice, but is not a traditional diving hotspot. Expect efficient access to gear, courses, and occasional day trips from the surrounding area.

Essential information for traveling in Japan

About Japan

Sea
Philippine Sea, Japan Sea/East Sea, Seto Naikai...
Timezone
Asia/Tokyo
Languages
JA
Demonym
Japanese
Phone prefix
+81

Practicalities

Currency
JPY
Voltage
110
Plug type
Type A
Airports
OKA HND NRT KIX NGO

Diving specifics

Temperature
°C
Depth units
meters
Pressure
bar
Regulators
DIN Yoke (INT)

Dive sites and dive centers around Toshima City

Nearby Dive Sites (5)

Nearby Dive Centers (2)

Nearby cities for scuba diving around Toshima City

The best time to dive in Toshima City

The best months to dive in Toshima City are from July to August. Temperatures are confortable (29-30°C), currents are mild and the visibility is at its best.

Excellent Good Fair Mitigated
01 - Jan.
5 °C 12 °C 9/10
02 - Feb.
6 °C 11 °C 9/10
03 - Mar.
10 °C 12 °C 6/10
04 - Apr.
15 °C 15 °C 7/10
05 - May
19 °C 19 °C 4/10
06 - Jun.
25 °C 22 °C 6/10
07 - Jul.
29 °C 27 °C 7/10
08 - Aug.
30 °C 28 °C 7/10
09 - Sept.
26 °C 27 °C 5/10
10 - Oct.
18 °C 23 °C 6/10
11 - Nov.
12 °C 18 °C 9/10
12 - Dec.
8 °C 14 °C 9/10

Based on last year's weather. Scores compare months for this destination only and are indicative. A mitigated month may still suit many divers.

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