Canterbury, New Zealand
Tasman Sea43.57°S, 172.76°EStation NE-CAN-MAT

Matuku-takotako / Sumner Beach Sea Water Temperature

A temperate beach on the Tasman Sea, warmest around February at about 17.1°C. Today's reading, 7-day forecast, and monthly averages below.

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Water Temperature NowBuoy & Sentinel-3 SST

Matuku-takotako / Sumner Beach water temperature

10.4
50.7°FVery Cold (< 16°C)

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

+0°vs Sep avgTasman Sea43.57°S, 172.76°E
Activity Index:SwimmingSnorkelingSurfingTypical conditions
Marine Atmosphere Grid Live Marine Feed
Coastal Air
12°C
53.4°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
10.4°C
50.7°F
Waves: 1m
Very Cold
ThuOct 1
10.7°C
51.3°F
Waves: 0.9m
Very Cold
FriOct 2
10.8°C
51.4°F
Waves: 0.7m
Very Cold
SatOct 3
10.7°C
51.3°F
Waves: 0.6m
Very Cold
SunOct 4
10.4°C
50.7°F
Waves: 0.7m
Very Cold
MonOct 5
10.1°C
50.2°F
Waves: 0.9m
Very Cold
TueOct 6
10°C
50°F
Waves: 1m
Very Cold
Forecast cooling trend: -0.4°C over 7 days at Matuku-takotako / Sumner Beach.
Confidence: High

Matuku-takotako / Sumner Beach Monthly Water Temperature Averages

Historical monthly climatology. The warmest water in Matuku-takotako / Sumner Beach occurs inJanuary, February, March, December — peaking at17.1°C (62.8°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
17
Feb
17
Mar
15
Apr
13
May
11
Jun
10
Jul
9
Aug
Current
10
Sep
12
Oct
14
Nov
15
Dec
Full 12-month data table — min / avg / max & swimming comfort
MonthMin Water TempAverage Water TempMax Water TempSwimming Comfort
January15.2°C16.7°C19.7°CCool / Refreshing (16°C – 20°C)
February15.1°C17.1°C19.7°CCool / Refreshing (16°C – 20°C)
March14.6°C16.5°C18.4°CCool / Refreshing (16°C – 20°C)
April13.5°C14.8°C16.2°CVery Cold (< 16°C)
May11.6°C13°C15.8°CVery Cold (< 16°C)
June9.3°C10.9°C13.1°CVery Cold (< 16°C)
July8.5°C9.7°C12°CVery Cold (< 16°C)
August8.3°C9.4°C10.8°CVery Cold (< 16°C)
SeptemberCurrent9.1°C10.4°C11.5°CVery Cold (< 16°C)
October9.8°C11.8°C14.1°CVery Cold (< 16°C)
November12°C13.9°C16.3°CVery Cold (< 16°C)
December13.8°C15.4°C16.8°CVery Cold (< 16°C)

Swimming FAQs for Matuku-takotako / Sumner Beach

Is the sea warm enough to swim in Matuku-takotako / Sumner Beach today?

Typical sea surface temperature in Matuku-takotako / Sumner Beach this time of year is 10.4°C (50.7°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 Matuku-takotako / Sumner Beach?

The highest water temperatures in Matuku-takotako / Sumner Beach typically occur duringJanuary, February, March, December, when monthly averages reach peak seasonal levels.

What is the typical water temperature in Matuku-takotako / Sumner Beach in September?

Historically in September, water temperatures in Matuku-takotako / Sumner Beach average around10.4°C (50.7°F), fluctuating between a recorded minimum of 9.1°C and a maximum of 11.5°C.

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Matuku-takotako / Sumner Beach Coastal Zone Map

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