Hawaii, United States
Pacific Ocean21.28°N, 157.83°WStation UN-HAW-WAI

Waikiki Beach (Honolulu) Sea Water Temperature

Legendary Hawaiian surfing beach with balmy, tropical waters every month of the year. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Waikiki Beach (Honolulu) water temperature

27.7
81.9°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 avgPacific Ocean21.28°N, 157.83°W
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
29°C
84.6°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
27.7°C
81.9°F
Waves: 1m
Warm
ThuOct 1
28°C
82.4°F
Waves: 0.9m
Tropical
FriOct 2
28.1°C
82.6°F
Waves: 0.7m
Tropical
SatOct 3
28°C
82.4°F
Waves: 0.6m
Tropical
SunOct 4
27.7°C
81.9°F
Waves: 0.7m
Warm
MonOct 5
27.4°C
81.3°F
Waves: 0.9m
Warm
TueOct 6
27.3°C
81.1°F
Waves: 1m
Warm
Forecast cooling trend: -0.4°C over 7 days at Waikiki Beach (Honolulu).
Confidence: High

Waikiki Beach (Honolulu) Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Waikiki Beach (Honolulu) occurs inJan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec — peaking at27.7°C (81.9°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
25
Mar
25
Apr
26
May
27
Jun
27
Jul
28
Aug
Current
28
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
January23.8°C24.6°C25.4°CWarm & Ideal (24°C – 28°C)
February23.5°C24.3°C25.1°CWarm & Ideal (24°C – 28°C)
March23.7°C24.5°C25.3°CWarm & Ideal (24°C – 28°C)
April24.2°C25.1°C26°CWarm & Ideal (24°C – 28°C)
May25°C25.9°C26.8°CWarm & Ideal (24°C – 28°C)
June25.8°C26.7°C27.6°CWarm & Ideal (24°C – 28°C)
July26.3°C27.2°C28.1°CWarm & Ideal (24°C – 28°C)
August26.7°C27.6°C28.5°CWarm & Ideal (24°C – 28°C)
SeptemberCurrent26.8°C27.7°C28.6°CWarm & Ideal (24°C – 28°C)
October26.4°C27.3°C28.2°CWarm & Ideal (24°C – 28°C)
November25.4°C26.3°C27.2°CWarm & Ideal (24°C – 28°C)
December24.3°C25.2°C26.1°CWarm & Ideal (24°C – 28°C)

Swimming FAQs for Waikiki Beach (Honolulu)

Is the sea warm enough to swim in Waikiki Beach (Honolulu) today?

Typical sea surface temperature in Waikiki Beach (Honolulu) this time of year is 27.7°C (81.9°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 Waikiki Beach (Honolulu)?

The highest water temperatures in Waikiki Beach (Honolulu) typically occur duringJan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Waikiki Beach (Honolulu) in September?

Historically in September, water temperatures in Waikiki Beach (Honolulu) average around27.7°C (81.9°F), fluctuating between a recorded minimum of 26.8°C and a maximum of 28.6°C.

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Waikiki Beach (Honolulu) Coastal Zone Map

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