Water temperature in Onetangi in September

Is it warm enough to swim in Onetangi in September? Average water temperature in Onetangi in September is 14.3°C and therefore is not suitable for comfortable swimming. The warmest sea in Onetangi in September is 15.8°C, and the coldest is 13°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Onetangi

Changes water temperature in Onetangi in September 2025, 2024

To get an accurate forecast for the water temperature in Onetangi for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Onetangi, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	14°C	15.1°C	13.3°C	15.1°C
2 September	14.1°C	15.4°C	13.3°C	15.4°C
3 September	13.7°C	15.3°C	13.2°C	15.3°C
4 September	13.7°C	15.2°C	13.3°C	15.2°C
5 September	13.9°C	15°C	13.3°C	15°C
6 September		14.9°C	13.4°C	14.9°C
7 September		14.9°C	13.5°C	14.9°C
8 September		14.9°C	13.5°C	14.9°C
9 September		14.7°C	13.6°C	14.7°C
10 September		14.6°C	13.1°C	14.9°C
11 September		14.6°C	13.2°C	14.7°C
12 September		14.4°C	13.3°C	15.4°C
13 September		14.4°C	13.6°C	14.5°C
14 September		14.6°C	13.4°C	15°C
15 September		14.8°C	13.5°C	14.8°C

Day	2024	Min	Max
16 September	14.5°C	14°C	14.7°C
17 September	14.3°C	13.6°C	14.9°C
18 September	14.2°C	13.7°C	14.8°C
19 September	14.4°C	13.4°C	14.8°C
20 September	14.4°C	13.7°C	14.9°C
21 September	14.4°C	14.1°C	15.1°C
22 September	14.8°C	14°C	15.1°C
23 September	15.2°C	13.7°C	15.2°C
24 September	14.9°C	13.8°C	15.5°C
25 September	14.7°C	13.9°C	15.8°C
26 September	14.7°C	14.1°C	15.6°C
27 September	14.9°C	14.1°C	15.5°C
28 September	14.8°C	14.1°C	15.5°C
29 September	14.9°C	14.4°C	15.3°C
30 September	14.9°C	14.2°C	15.4°C

Average water temperature in Onetangi in September over a decade

2015	2016	2017	2018	2019
13.6°C	14.3°C	14.6°C	14.4°C	14.2°C

2020	2021	2022	2023	2024
14.1°C	14.1°C	15.1°C	14.6°C	14.8°C

Onetangi sea state in September

Chart comparing the height of waves in Onetangi in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Onetangi water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Maraetai	14.2°C	13°C	15.8°C
Pakuranga	14.2°C	13°C	15.8°C
Tamaki	14.2°C	13°C	15.8°C
Mission Bay	14.2°C	13°C	15.8°C
Murrays Bay	14.2°C	13°C	15.8°C
Takapuna	14.2°C	13°C	15.8°C
North Shore	14.2°C	13°C	15.9°C
Browns Bay	14.3°C	13.1°C	15.7°C
Manukau City	14.2°C	13.2°C	15.7°C
Takanini	14.2°C	13.2°C	15.7°C

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Our report for Onetangi 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.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature