Water temperature in Seatoun

This data the coastal Seatoun sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Seatoun

Water temperature in Seatoun today is 13.4°C. Based on our historical data over a period of ten years, the warmest water in this day in Seatoun was recorded in 2017 and was 13.5°C, and the coldest was recorded in 2015 at 11.4°C. Sea water temperature in Seatoun is expected to drop to 12.9°C in the next 10 days. September average water temperature in Seatoun is 12.6°C, the minimum temperature is 11°C, and the maximum is 14.2°C.

Throughout the year, the water temperature in Seatoun does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Seatoun in winter reaches 12.6°C, in spring 13.4°C, in summer the average temperature rises to 16.4°C, and in autumn it is 15.6°C.

Seatoun water temperature now

Surf Forecast in Seatoun for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Seatoun. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Seatoun. Data in table shown for 26 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Seatoun

Seatoun weather forecast

Current temperature and weather

Data in a table show Seatoun temperature today (26 September 2025). For more information and forecast for a few days, go to the weather forecast Seatoun.

0-3 h	3-6 h	6-9 h	9-12 h
8.4°C	9.9°C	10.3°C	12.1°C

12-15 h	15-18 h	18-21 h	21-24 h
11.3°C	12.5°C	12.3°C	11.9°C

Seatoun water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Seatoun. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Seatoun on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Seatoun

The nearest beaches and cities from Seatoun with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Titahi Bay	13.6°C	12°C		1.68 m
Plimmerton	13.6°C	12°C		1.68 m
Paekakariki	13.9°C	12°C		1.91 m
Raumati Beach	14°C	12°C		1.91 m
Paraparaumu	14°C	12°C		1.93 m
Kapiti Island	14°C	12°C		2 m
Waikanae	13.9°C	12°C		1.8 m
Marlborough Sounds	12.7°C	14°C		0.32 m
Picton	12.7°C	14°C		0.33 m
Otaki Beach	13.9°C	12°C		2.07 m

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Seatoun Beach, Seatoun Wharf

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Our report for Seatoun is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.