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Stewart Island Sea Temperature in June

New Zealand

May Stewart Island year-round → July

Average sea temperature for Stewart Island, New Zealand across June, based on 10 years of daily readings.

Average

12.07° C

High

13.67° C

Low

10.62° C

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

June is the 8th warmest of 12 months at Stewart Island. On average the water sits 0.6° than the year-round mean of 12.68° C.

Compared to May, June is 0.9° cooler than (12.96° C in May). By July the water is usually 11.5° C.

Stewart Island Day-by-Day Water Temperature in June

10-year low, average and high

10.0° C
11.1° C
12.3° C
13.4° C
14.5° C
1
5
10
15
20
25
30
Day-by-day low and high band with the 10-year daily average through June. Range Average

Each vertical bar above is one day of June. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Stewart Island.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

June Water Temperature Table for Stewart Island

10-year daily averages

Day Average Low High
June 1 12.44° C 11.26° C 13.59° C
June 2 12.42° C 11.3° C 13.5° C
June 3 12.39° C 11.27° C 13.37° C
June 4 12.36° C 11.09° C 13.26° C
June 5 12.23° C 11.1° C 13.27° C
June 6 12.19° C 11.28° C 13.28° C
June 7 12.18° C 11.31° C 13.32° C
June 8 12.15° C 11.43° C 13.39° C
June 9 12.15° C 11.46° C 13.41° C
June 10 12.08° C 11.18° C 13.41° C
June 11 12.06° C 11.43° C 13.38° C
June 12 12.04° C 11.27° C 13.42° C
June 13 12.14° C 11.37° C 13.44° C
June 14 12.2° C 11.39° C 13.61° C
June 15 12.1° C 10.93° C 13.57° C
June 16 12.08° C 11.26° C 13.57° C
June 17 12.07° C 11.19° C 13.63° C
June 18 12.06° C 11.1° C 13.66° C
June 19 12° C 10.89° C 13.61° C
June 20 11.9° C 10.79° C 13.61° C
June 21 11.94° C 11.05° C 13.62° C
June 22 12.01° C 10.98° C 13.61° C
June 23 11.92° C 10.73° C 13.58° C
June 24 11.93° C 10.62° C 13.67° C
June 25 11.87° C 10.73° C 13.56° C
June 26 11.83° C 10.86° C 13.62° C
June 27 11.89° C 10.85° C 13.58° C
June 28 11.86° C 10.95° C 13.54° C
June 29 11.84° C 11.07° C 13.45° C
June 30 11.86° C 11.13° C 13.38° C

Where June Sits in the Year

June highlighted

9.0° C
11.4° C
13.8° C
16.1° C
18.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
13.88° C
14.16° C
14° C
13.57° C
12.96° C
12.07° C
11.5° C
11.39° C
11.37° C
11.57° C
12.36° C
13.27° C
10-year monthly history for Stewart Island. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in June

Compare other New Zealand water for the same month

Stewart Island Location

-47.0103, 167.8272

-47.01032, 167.82723 View on OpenStreetMap →

Stewart Island sits at -47.0103°N, 167.8272°E, on the coast of New Zealand. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Stewart Island