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Tahunanui Beach water temperature
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Tahunanui Beach Water Temperature and Wetsuit Guide

(Nelson – Tasman Bay, New Zealand)

Today's Tahunanui Beach sea temperature is 19.1 °C.

Statistics for 16 Dec (1981–2005) – mean: 15.4 °C, range: 13.6 °C to 17.0 °C

Sunny with pleasantly warm air temperatures (feeling like 22 °C once we account for wind), yet at 19 °C the sea remains several degrees colder than the air at Tahunanui Beach. The majority of surfers will need a spring wetsuit though a summer suit or even a shorty may suffice for a short session.

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 Tahunanui Beach. 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.

Tahunanui Beach 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.

Tahunanui water temperatures peak in the range 16 to 19°C (61 to 66°F) on around the 7th of February and are at their coldest on about the 21st of August, in the range 11 to 13°C (52 to 55°F). The warmest seasonal water temperatures at Tahunanui in the first part of February lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots. The coldest water temperatures at Tahunanui in mid to late August are ideally suited to a 4/3mm wetsuit + 3mm boots, although a 5/3mm wetsuit may be preferable for longer sessions and cold windy days.

Actual sea surface water temperatures close to shore at Tahunanui Beach 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 Tahunanui Beach. Refer to our detailed weather forecasts for this information.