Waiinu Beach – current water temperature and swimming conditions

This page shows the current water temperature at Waiinu Beach in Taranaki Region. You can view recent sea temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. The page also includes a 7-day water temperature forecast, nearby beaches with similar conditions, local weather information, and a summary of swimming conditions to help you assess how suitable the water is for swimming.

Current Sea Water Temperature

18.0°C

Today

18.0°C

Yesterday

18.1°C

A Week Ago

The average sea water temperature today in Waiinu Beach is about 18°C.

Water Temperature in Waiinu Beach: Daily Trends, Historical Records, and Forecast

⚠️ This is cool water that may feel brisk on entry. Swimming is usually limited to short sessions, and prolonged stays can become uncomfortable without thermal protection. Many swimmers choose a wetsuit, especially for surfing or open-water swimming.

It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.

Water Temperature Over the Last 30 Days

From February 27 to March 29

Water temperatures in Waiinu Beach have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, Sea water temperature in Waiinu Beach will be 16.2°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
Mar 22	18.1°C	17.8°C
Mar 23	18.0°C	17.5°C
Mar 24	18.1°C	17.5°C
Mar 25	17.9°C	17.8°C
Mar 26	18.1°C	17.8°C
Mar 27	18.2°C	18.0°C
Mar 28	18.1°C	17.8°C
Mar 29	18.0°C	18.0°C
Mar 30	18.0°C	18.0°C	18.0°C
Mar 31		18.0°C	17.7°C
Apr 1		17.8°C	17.5°C
Apr 2		16.8°C	17.2°C
Apr 3		16.8°C	17.0°C
Apr 4		15.8°C	16.7°C
Apr 5		15.5°C	16.4°C
Apr 6		15.8°C	16.2°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual near-shore water temperatures in Waiinu Beach can vary by several degrees from the values shown, particularly after heavy rain, strong southerlies, or prolonged windy conditions. Certain wind patterns can trigger upwelling, where cooler, deeper water is pushed to the surface and replaces the warmer top layer, leading to noticeable short-term changes in water temperature.

Our water temperature forecast is produced using a proprietary mathematical model that combines real-time measurements with long-term historical patterns, local weather conditions, wind strength and direction, and air temperature specific to each coastal region. To improve accuracy, we cross-check data from nearby locations and use multiple sources, including offshore buoys, satellite-based sea surface maps, and observations provided by local authorities.

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Waiinu Beach sits on the southern edge of the Taranaki Region, close to the boundary with Manawatū–Whanganui, facing toward Cook Strait and the Tasman-influenced west coast waters. Sea temperatures here follow a typical lower North Island pattern. In winter, from June to August, the water generally ranges between 10–13°C, which feels properly cold and is usually only comfortable for hardy swimmers or those in full wetsuits. Through spring, temperatures gradually rise to around 13–15°C. Summer, from December to March, brings the mildest conditions, with sea temperatures commonly sitting between 16–19°C during settled spells. Early autumn can still see 15–17°C before cooling again as winter approaches.

Monthly Water Temperature Range (Min, Max & Average)

Month	Min	Avg	Max
January	15°C	18°C	21°C
February	17°C	19°C	21°C
March	15°C	18°C	21°C
April	16°C	18°C	19°C
May	14°C	16°C	19°C
June	12°C	15°C	17°C
July	11°C	14°C	16°C
August	11°C	13°C	15°C
September	11°C	13°C	15°C
October	11°C	14°C	16°C
November	13°C	15°C	19°C
December	14°C	17°C	20°C

* Click on a month to view detailed water temperature data.

Waiinu Beach: Weather Forecast

March 30

14°C / 20°C

scattered clouds: 25-50%

humidity: 77% | wind: 14 kmh

March 31

6°C / 15°C

scattered clouds: 25-50%

humidity: 69% | wind: 18 kmh

April 1

7°C / 17°C

clear sky

humidity: 66% | wind: 7 kmh

April 2

8°C / 18°C

clear sky

humidity: 63% | wind: 7 kmh

Local Water Conditions and Nearby Spots

Swimming Conditions

Swimming is allowed at Waiinu Beach, but it’s an exposed and often energetic stretch of coastline. The beach is sandy and wide, yet open to swells rolling in from the Tasman Sea and Cook Strait. Rip currents and shifting sandbars can form depending on wind and tide, so swimmers need to assess conditions carefully before entering the water. There are generally no regular lifeguard patrols, which means extra caution is required. During summer, short swims can be refreshing on calm, sunny days, especially for confident swimmers. Outside the warmer months, cooler water temperatures and stronger surf make thermal gear advisable. Waiinu offers a quiet and scenic west coast setting, but ocean conditions should always be respected.