Okinawa, Japan
Amakusa Sea28.40°N, 129.62°EStation JA-OKI-BEA

手広海岸 Sea Water Temperature

A subtropical beach on the Amakusa Sea, warmest around August at about 28.9°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

手広海岸 water temperature

28.2
82.8°FTropical Warm (> 28°C)

Very warm bath-like water. Zero chill, exceptional for relaxation and snorkeling.

+0°vs Sep avgAmakusa Sea28.40°N, 129.62°E
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
30°C
85.5°F onshore
Wind Speed
12 km/h
Surface wind
Wave Height
0.8 m
Slight shore chop
Swell
0.6 m
Deep water swell
Wave Period
6 s
Peak interval
UV Index
—
Daily maximum
Sunrise
—
First morning light
Sunset
—
Golden hour close

7-Day Water Temperature Forecast

Open-Meteo ocean model
Today
WedSep 30
28.2°C
82.8°F
Waves: 1m
Tropical
ThuOct 1
28.5°C
83.3°F
Waves: 0.9m
Tropical
FriOct 2
28.6°C
83.5°F
Waves: 0.7m
Tropical
SatOct 3
28.5°C
83.3°F
Waves: 0.6m
Tropical
SunOct 4
28.2°C
82.8°F
Waves: 0.7m
Tropical
MonOct 5
27.9°C
82.2°F
Waves: 0.9m
Warm
TueOct 6
27.8°C
82°F
Waves: 1m
Warm
Forecast cooling trend: -0.4°C over 7 days at 手広海岸.
Confidence: High

手広海岸 Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in 手広海岸 occurs inJune, July, August, September, October, November — peaking at28.9°C (84°F) in August.

Year-Round Water Temperature Curve (°C / °F)

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
22
Jan
21
Feb
21
Mar
22
Apr
24
May
26
Jun
28
Jul
29
Aug
Current
28
Sep
27
Oct
25
Nov
23
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January20.8°C21.7°C23.6°CComfortable (20°C – 24°C)
February19.9°C21°C22.5°CComfortable (20°C – 24°C)
March17.4°C20.9°C22.5°CComfortable (20°C – 24°C)
April20.4°C22.1°C23.6°CComfortable (20°C – 24°C)
May20.6°C23.5°C26°CComfortable (20°C – 24°C)
June22.8°C25.9°C28.2°CWarm & Ideal (24°C – 28°C)
July26.8°C28.3°C30°CTropical Warm (> 28°C)
August27.2°C28.9°C30.6°CTropical Warm (> 28°C)
SeptemberCurrent26.4°C28.2°C29.7°CTropical Warm (> 28°C)
October25.4°C27°C28.8°CWarm & Ideal (24°C – 28°C)
November23.2°C24.8°C27.1°CWarm & Ideal (24°C – 28°C)
December22.2°C23.3°C24.8°CComfortable (20°C – 24°C)

Swimming FAQs for 手広海岸

Is the sea warm enough to swim in 手広海岸 today?

Typical sea surface temperature in 手広海岸 this time of year is 28.2°C (82.8°F) — classified as Tropical Warm (> 28°C). Very warm bath-like water. Zero chill, exceptional for relaxation and snorkeling. Live readings load automatically.

What are the warmest months for swimming in 手広海岸?

The highest water temperatures in 手広海岸 typically occur duringJune, July, August, September, October, November, when monthly averages reach peak seasonal levels.

What is the typical water temperature in 手広海岸 in September?

Historically in September, water temperatures in 手広海岸 average around28.2°C (82.8°F), fluctuating between a recorded minimum of 26.4°C and a maximum of 29.7°C.

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手広海岸 Coastal Zone Map

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