サマータイム

3mm wetsuit typical

サマータイム at a glance

サマータイム is a dive site in Japan. Typically most favorable Oct · from 3 years of archive data. Recent reports put the water around 22°C (72°F). Check the latest conditions and entry details before you go.

Next window today· 15:00–17:00 · favorable · sunset 16:53

Forecast for this hour · 14:00 · run under 1 h ago

0.2 m (0.6 ft)waves — under half a meter expected (waves — under a foot expected)

Tap a factor for its source and model point · Forecast 22°C · seasonal avg 22°C ( · Forecast 72°F · seasonal avg 72°F)

Dive windows this week

Sat

0.2 m waves · 2 kn wind (0.6 ft waves · 2 kn wind)

Sun

0.3 m waves · 6 kn wind (1.0 ft waves · 6 kn wind)

Mon

0.2 m waves · 3 kn wind (0.7 ft waves · 3 kn wind)

Tue

0.2 m waves · 3 kn wind (0.6 ft waves · 3 kn wind)

Wed

0.2 m waves · 13 kn wind (0.6 ft waves · 13 kn wind)

Thu

0.1 m waves · 5 kn wind (0.2 ft waves · 5 kn wind)

Fri

0.1 m waves · 2 kn wind (0.2 ft waves · 2 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 5:27 · Sunrise 5:53 · Sunset 16:53 · some windows run past sunset

Source: Open-Meteo marine · model point 4.6 km from site · updated 24 Oct, 14:21 GMT+9

Forecast only — always assess conditions on site.

Compare this weekend’s windows near サマータイム

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

January, 92% of days have historically been favorable, water has typically been 9°C (49°F), waves have typically been 0.6 m (1.9 ft), wind has typically been 11 knots
February, 88% of days have historically been favorable, water has typically been 9°C (48°F), waves have typically been 0.7 m (2.2 ft), wind has typically been 13 knots
March, 89% of days have historically been favorable, water has typically been 11°C (52°F), waves have typically been 0.7 m (2.2 ft), wind has typically been 13 knots
April, 90% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 0.6 m (1.9 ft), wind has typically been 12 knots
May, 91% of days have historically been favorable, water has typically been 19°C (65°F), waves have typically been 0.6 m (1.9 ft), wind has typically been 12 knots
June, 90% of days have historically been favorable, water has typically been 22°C (72°F), waves have typically been 0.5 m (1.6 ft), wind has typically been 11 knots
July, 97% of days have historically been favorable, water has typically been 27°C (80°F), waves have typically been 0.5 m (1.8 ft), wind has typically been 11 knots
August, 96% of days have historically been favorable, water has typically been 29°C (83°F), waves have typically been 0.5 m (1.6 ft), wind has typically been 10 knots
September, 98% of days have historically been favorable, water has typically been 28°C (82°F), waves have typically been 0.5 m (1.7 ft), wind has typically been 11 knots
October, 98% of days have historically been favorable, water has typically been 22°C (72°F), waves have typically been 0.5 m (1.5 ft), wind has typically been 10 knots, historically most favorable
November, 89% of days have historically been favorable, water has typically been 18°C (65°F), waves have typically been 0.6 m (1.8 ft), wind has typically been 11 knots
December, 94% of days have historically been favorable, water has typically been 13°C (56°F), waves have typically been 0.5 m (1.7 ft), wind has typically been 10 knots

October has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

フィズ19 km (12 mi)
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Dive!SCOOP23 km (14 mi)
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Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

サマータイム is a dive site in Japan.

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

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サマータイム