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Onekaka water temperature
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Onekaka Water Temperature and Wetsuit Guide

(Nelson – Tasman Bay, New Zealand)

Today's Onekaka sea temperature is 11.7 °C.

Statistics for 17 Aug (1981–2005) – mean: 13.0 °C, range: 12.1 °C to 13.9 °C

The water temperature (11 °C) at Onekaka is quite cold. If the sun shines as forecast, it should feel warm enough to get away with a good sealed spring wetsuit but you won't overheat in a winter wetsuit, gloves boots and a hood. Effective windchill factor of (11 °C).

New Zealand Sea Water Temperature

Map of current New Zealand
Surface Water Temperatures
based on measurements from oceanographic satellites
New Zealand Water Temperature Anomaly

Map of current New Zealand
Sea Water Temperature Anomalies

(compared with long term averages
at this time of year)

(click thumbnails to expand)

Below is a graph of Historical Sea Surface Temperature for Onekaka. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

Onekaka Water Temperature Graph

All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.

Actual sea surface water temperatures close to shore at Onekaka can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Onekaka. Refer to our detailed weather forecasts for this information.