Taumarunui – current water temperature and swimming conditions

This page provides information about the current water temperature at Taumarunui in Manawatū–Whanganui. Here you can view recent temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. A 7-day water temperature forecast, local weather conditions, and an overview of swimming suitability are also included.

Current Water Temperature

16.8°C

Today

16.7°C

Yesterday

16.5°C

A Week Ago

The water temperature in Whanganui River at Taumarunui today is 17°C.

Water Temperature in Whanganui River at Taumarunui: Daily Trends, Historical Records, and Forecast

⚠️ A river temperature of 15 to 20°C is generally considered cool to comfortable for swimming in Australia. On warm, calm days, this range allows for relaxed swimming and longer time in the water. Comfort depends heavily on air temperature and sunshine, as cooler weather can still make the water feel chilly. This range is popular for river swimming during spring and early autumn.

Water Temperature Over the Last 30 Days

While water temperatures in Taumarunui declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, the water temperature in Taumarunui will be 15.7°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Water Temperature Data

Date	Current	Average	Forecast
Mar 22	16.4°C	15.5°C
Mar 23	16.4°C	15.5°C
Mar 24	16.5°C	15.5°C
Mar 25	16.5°C	15.5°C
Mar 26	16.5°C	15.5°C
Mar 27	16.5°C	15.5°C
Mar 28	16.7°C	15.5°C
Mar 29	16.7°C	15.5°C
Mar 30	16.8°C	15.5°C	16.8°C
Mar 31		15.5°C	16.6°C
Apr 1		15.5°C	16.5°C
Apr 2		15.5°C	16.3°C
Apr 3		15.5°C	16.2°C
Apr 4		15.5°C	16.0°C
Apr 5		15.5°C	15.8°C
Apr 6		15.5°C	15.7°C

* Current - Actual water temperature value

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

*** Forecast - Our water temperature forecast

Actual river water temperatures may vary by several degrees from the reported values, particularly after heavy rainfall or periods of changing weather. Rainfall, river flow rates, and runoff from cooler upstream areas can significantly affect water temperature, especially in flowing sections and shaded stretches. Air temperature and cloud cover also play an important role, with warm, sunny conditions helping rivers warm up more quickly. As a result, noticeable temperature differences can occur along the same river.

Our forecast is based on a proprietary mathematical model that takes into account real-time river temperature changes, historical data, seasonal patterns, river flow conditions, recent rainfall, and local air temperature. We also factor in broader weather conditions specific to each region of Australia to improve accuracy.

Monthly Water Temperature Range (Min, Max & Average)

Month	Today	Yesterday	A Week Ago
January	14°C	20°C	25°C
February	12°C	17°C	22°C
March	10°C	16°C	21°C
April	7°C	13°C	19°C
May	5°C	10°C	14°C
June	4°C	9°C	13°C
July	3°C	8°C	12°C
August	5°C	9°C	13°C
September	7°C	11°C	15°C
October	9°C	13°C	17°C
November	9°C	15°C	21°C
December	9°C	15°C	21°C

Taumarunui: Weather Forecast

March 30

12°C / 21°C

slight rain showers

rain: 78% | wind: 17 km/h

March 31

11°C / 20°C

slight rain showers

rain: 3% | wind: 15 km/h

April 1

13°C / 21°C

fog

rain: 8% | wind: 11 km/h

April 2

12°C / 22°C

fog

rain: 0% | wind: 8 km/h

April 3

13°C / 21°C

fog

rain: 0% | wind: 10 km/h

April 4

11°C / 21°C

fog

rain: 17% | wind: 12 km/h

Location & Local Information

Taumarunui is located in the upper reaches of the Whanganui River, where the river is narrower and more strongly influenced by inland and hill country conditions. Water temperatures here show a clear seasonal pattern. In summer, the river typically warms to around 17–21 °C, which feels refreshing and suitable for swimming on hot days. During spring and autumn, temperatures usually sit between 13–17 °C. In winter, the water cools significantly, often dropping to about 8–11 °C, making it cold and uncomfortable for most swimmers.

Swimming Conditions

Swimming in the Whanganui River around Taumarunui is allowed and is a common summer activity, particularly at known local swimming holes and calm river bends. The warmer months provide the best conditions, with stable flows and water temperatures that suit short to moderate swims. However, the river’s character can change quickly after heavy rain, with increased flow and reduced clarity. Currents can also be stronger in narrower sections, so swimming is best done in familiar locations during settled weather. Outside summer, cooler temperatures and higher flows generally limit swimming to very brief dips. Overall, Taumarunui offers good seasonal swimming opportunities in the Whanganui River, especially in summer, while cooler months are better suited to enjoying the river from the bank rather than in the water.

Nearby Places

Frequently Asked Questions

What is the current water temperature in Whanganui River at Taumarunui?

The water temperature in Whanganui River at Taumarunui today is 17°C.

What is the water temperature in Whanganui River at Taumarunui during the summer months?

In summer, water temperatures in Whanganui River at Taumarunui at Wangi Wangi typically range from 9°C to 25°C.

Is it possible to swim in Whanganui River at Taumarunui (Manawatū–Whanganui)?

Yes — you can swim in the Whanganui River at Taumarunui (Manawatū–Whanganui), but the water is often cool, currents can be strong and there are hidden hazards and sudden depth changes. Always check local signage and recent water-quality and flood warnings, avoid swimming after heavy rain, swim with others or at a known safe spot, and consider a wetsuit or lifejacket if you’re unsure about the temperature or your fitness.