Water temperature in Bay of Islands in January

Is it warm enough to swim in Bay of Islands in January? Average water temperature in Bay of Islands in January is 20.2°C and therefore suitable for comfortable swimming. The warmest sea in Bay of Islands in January is 22.9°C, and the coldest is 17.6°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Bay of Islands

Changes water temperature in Bay of Islands in January 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 January	19.3°C	20.1°C	17.9°C	21.3°C
2 January	19.5°C	20.4°C	17.6°C	21°C
3 January	19.6°C	19.8°C	17.6°C	20.9°C
4 January	18.8°C	19.5°C	17.7°C	21.5°C
5 January	18.7°C	20.1°C	18.5°C	21.6°C
6 January	18.7°C	19.7°C	18.5°C	21.8°C
7 January	19.1°C	20°C	18.4°C	21.5°C
8 January	19.5°C	20.3°C	18.3°C	21.3°C
9 January	19.6°C	20.4°C	18.3°C	21.2°C
10 January	20°C	20.5°C	18.4°C	21.9°C
11 January	20.1°C	20.9°C	18.4°C	22.2°C
12 January	20.1°C	21°C	18.2°C	22.3°C
13 January	20.3°C	21.6°C	18.2°C	22.5°C
14 January	20.4°C	21.7°C	18.3°C	21.9°C
15 January	20.4°C	21.6°C	18.6°C	21.6°C

Day	2025	2024	Min	Max
16 January	20.4°C	22°C	18.9°C	22°C
17 January	20.4°C	22.5°C	19°C	22.5°C
18 January	20.4°C	22.1°C	19.1°C	22.1°C
19 January	20.4°C	22.9°C	19°C	22.9°C
20 January	20.5°C	22.3°C	18.7°C	22.3°C
21 January	20.3°C	22.1°C	18.6°C	22.1°C
22 January	20.7°C	22.5°C	18.5°C	22.5°C
23 January	21°C	22.4°C	18.4°C	22.4°C
24 January	21.3°C	22.2°C	18.6°C	22.2°C
25 January	21.3°C	21.5°C	18.4°C	22.1°C
26 January	21.1°C	21.7°C	18.3°C	22.2°C
27 January	20.7°C	21.5°C	18.4°C	22.1°C
28 January	21°C	21.7°C	18.5°C	22.5°C
29 January	21.1°C	21.5°C	18.8°C	22.4°C
30 January	21.3°C	21.4°C	18.9°C	22.4°C
31 January	20.7°C	21.5°C	19.2°C	22.6°C

Bay of Islands water temp chart in January

Average water temperature in Bay of Islands in January over a decade

2016	2017	2018	2019	2020
20.6°C	18.8°C	20.5°C	20.6°C	20.1°C

2021	2022	2023	2024	2025
20.4°C	21.7°C	21.3°C	21.3°C	20.2°C

Bay of Islands sea state in January

Chart comparing the height of waves in Bay of Islands in January 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.

Waves height in Bay of Islands in January

Bay of Islands 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 January. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Russell	20.2°C	17.6°C	22.9°C
Waitangi (Northland)	20.2°C	17.5°C	23°C
Kerikeri	20.2°C	17.6°C	22.7°C
Matauri Bay	20.1°C	17.8°C	22.6°C
Matapouri	20.2°C	17.6°C	22.3°C
Poor Knights Islands	20.2°C	17.8°C	22.5°C
Mangonui	20.1°C	17.5°C	22.6°C
Whangarei	20.8°C	17.7°C	24.4°C
Coopers Beach	20.1°C	17.6°C	22.8°C
Marsden Point	20.6°C	17.7°C	23.6°C

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Our report for Bay of Islands 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