Hawaii, United States
Coastal Waters20.97°N, 156.68°WStation UN-HAW-STU

S-Turns Beach Sea Water Temperature

A tropical beach on the Coastal Waters, warmest around September at about 26.9°C. Today's reading, 7-day forecast, and monthly averages below.

Live readings · auto-updating
Water Temperature NowBuoy & Sentinel-3 SST

S-Turns Beach water temperature

26.9
80.4°FWarm & Ideal (24°C – 28°C)

Ideal swimming conditions. Feels soothing and warm, perfect for hours in the water without getting cold.

+0°vs Sep avgCoastal Waters20.97°N, 156.68°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
28°C
83.1°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
26.9°C
80.4°F
Waves: 1m
Warm
ThuOct 1
27.2°C
81°F
Waves: 0.9m
Warm
FriOct 2
27.3°C
81.1°F
Waves: 0.7m
Warm
SatOct 3
27.2°C
81°F
Waves: 0.6m
Warm
SunOct 4
26.9°C
80.4°F
Waves: 0.7m
Warm
MonOct 5
26.6°C
79.9°F
Waves: 0.9m
Warm
TueOct 6
26.5°C
79.7°F
Waves: 1m
Warm
Forecast cooling trend: -0.4°C over 7 days at S-Turns Beach.
Confidence: High

S-Turns Beach Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in S-Turns Beach occurs inJanuary, February, March, April, May, June, July, August, September, October, November, December — peaking at26.9°C (80.4°F) in September.

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

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
25
Jan
24
Feb
24
Mar
25
Apr
25
May
26
Jun
26
Jul
26
Aug
Current
27
Sep
27
Oct
26
Nov
25
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January23.1°C24.7°C25.9°CWarm & Ideal (24°C – 28°C)
February22.3°C24.2°C25.1°CWarm & Ideal (24°C – 28°C)
March23.2°C24.3°C25.2°CWarm & Ideal (24°C – 28°C)
April23.4°C24.6°C25.5°CWarm & Ideal (24°C – 28°C)
May24.3°C25.2°C26.8°CWarm & Ideal (24°C – 28°C)
June24.6°C25.7°C27.1°CWarm & Ideal (24°C – 28°C)
July25°C26.1°C27.5°CWarm & Ideal (24°C – 28°C)
August25.4°C26.4°C28.1°CWarm & Ideal (24°C – 28°C)
SeptemberCurrent25.1°C26.9°C28.9°CWarm & Ideal (24°C – 28°C)
October25.2°C26.7°C27.9°CWarm & Ideal (24°C – 28°C)
November24.9°C26.2°C27.8°CWarm & Ideal (24°C – 28°C)
December24°C25.3°C26.4°CWarm & Ideal (24°C – 28°C)

Swimming FAQs for S-Turns Beach

Is the sea warm enough to swim in S-Turns Beach today?

Typical sea surface temperature in S-Turns Beach this time of year is 26.9°C (80.4°F) — classified as Warm & Ideal (24°C – 28°C). Ideal swimming conditions. Feels soothing and warm, perfect for hours in the water without getting cold. Live readings load automatically.

What are the warmest months for swimming in S-Turns Beach?

The highest water temperatures in S-Turns Beach typically occur duringJanuary, February, March, April, May, June, July, August, September, October, November, December, when monthly averages reach peak seasonal levels.

What is the typical water temperature in S-Turns Beach in September?

Historically in September, water temperatures in S-Turns Beach average around26.9°C (80.4°F), fluctuating between a recorded minimum of 25.1°C and a maximum of 28.9°C.

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S-Turns Beach Coastal Zone Map

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