West Coast, New Zealand
Tasman Sea43.25°S, 170.11°EStation NE-WES-THR

Three Mile Beach Sea Water Temperature

A temperate beach on the Tasman Sea, warmest around February at about 17.7°C. Today's reading, 7-day forecast, and monthly averages below.

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

Three Mile Beach water temperature

12.9
55.2°FVery Cold (< 16°C)

Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.

+0°vs Sep avgTasman Sea43.25°S, 170.11°E
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
14°C
57.9°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
12.9°C
55.2°F
Waves: 1m
Very Cold
ThuOct 1
13.2°C
55.8°F
Waves: 0.9m
Very Cold
FriOct 2
13.3°C
55.9°F
Waves: 0.7m
Very Cold
SatOct 3
13.2°C
55.8°F
Waves: 0.6m
Very Cold
SunOct 4
12.9°C
55.2°F
Waves: 0.7m
Very Cold
MonOct 5
12.6°C
54.7°F
Waves: 0.9m
Very Cold
TueOct 6
12.5°C
54.5°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Three Mile Beach.
Confidence: High

Three Mile Beach Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Three Mile Beach occurs inJanuary, February, March, April — peaking at17.7°C (63.9°F) in February.

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

Hover a bar for details
Current month Comfortable (20–24°C) Warm (24°C+) Cool (<20°C)
17
Jan
18
Feb
17
Mar
16
Apr
15
May
14
Jun
13
Jul
13
Aug
Current
13
Sep
13
Oct
15
Nov
16
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January13.3°C16.7°C21°CCool / Refreshing (16°C – 20°C)
February15.6°C17.7°C20.2°CCool / Refreshing (16°C – 20°C)
March14.5°C17.2°C20.2°CCool / Refreshing (16°C – 20°C)
April13.9°C16.4°C18.9°CCool / Refreshing (16°C – 20°C)
May13.3°C15.3°C17.5°CVery Cold (< 16°C)
June12.7°C13.9°C15.4°CVery Cold (< 16°C)
July11.7°C13.1°C14°CVery Cold (< 16°C)
August11.5°C12.7°C13.7°CVery Cold (< 16°C)
SeptemberCurrent11.8°C12.9°C13.6°CVery Cold (< 16°C)
October12.4°C13.3°C15.1°CVery Cold (< 16°C)
November12.7°C14.5°C17.8°CVery Cold (< 16°C)
December13.4°C15.8°C18.3°CVery Cold (< 16°C)

Swimming FAQs for Three Mile Beach

Is the sea warm enough to swim in Three Mile Beach today?

Typical sea surface temperature in Three Mile Beach this time of year is 12.9°C (55.2°F) — classified as Very Cold (< 16°C). Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges. Live readings load automatically.

What are the warmest months for swimming in Three Mile Beach?

The highest water temperatures in Three Mile Beach typically occur duringJanuary, February, March, April, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Three Mile Beach in September?

Historically in September, water temperatures in Three Mile Beach average around12.9°C (55.2°F), fluctuating between a recorded minimum of 11.8°C and a maximum of 13.6°C.

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Three Mile Beach Coastal Zone Map

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