Manawatū River – current water temperature and swimming conditions
This page provides information about the current water temperature at Manawatū River 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
The water temperature in Manawatū River today is 9°C.
Water Temperature in Manawatū River: Daily Trends, Historical Records, and Forecast
❌ River water below 10°C is very cold and generally unsuitable for swimming for most people. Even on a warm day, rivers at this temperature can quickly cause cold shock and numbness due to flowing water and shaded banks. Swimming is usually limited to brief cold dips or experienced cold-water swimmers. Overcast weather or cool air temperatures make river swimming especially uncomfortable and potentially unsafe.
Water Temperature Over the Last 30 Days
Water temperatures in Manawatū River have been gradually cooling over the past month, with a further drop recorded during the last week.
According to our forecast, the water temperature in Manawatū River will be 9.7°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 |
|---|---|---|---|
| Aug 19 | 14.7°C | 9.7°C | |
| Aug 20 | 14.6°C | 9.7°C | |
| Aug 21 | 14.6°C | 9.7°C | |
| Aug 22 | 14.8°C | 9.7°C | |
| Aug 23 | 15.0°C | 9.7°C | |
| Aug 24 | 15.2°C | 9.7°C | |
| Aug 25 | 9.4°C | 9.7°C | |
| Aug 26 | 9.4°C | 9.7°C | |
| Aug 27 | 9.4°C | 9.7°C | 9.4°C |
| Aug 28 | 9.7°C | 9.4°C | |
| Aug 29 | 9.7°C | 9.5°C | |
| Aug 30 | 9.7°C | 9.5°C | |
| Aug 31 | 9.7°C | 9.6°C | |
| Sep 1 | 9.7°C | 9.6°C | |
| Sep 2 | 9.7°C | 9.6°C | |
| Sep 3 | 9.7°C | 9.7°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 New Zealand to improve accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Today | Yesterday | A Week Ago |
|---|---|---|---|
| January | 12°C | 19°C | 25°C |
| February | 13°C | 19°C | 25°C |
| March | 14°C | 19°C | 23°C |
| April | 10°C | 14°C | 18°C |
| May | 8°C | 13°C | 17°C |
| June | 5°C | 10°C | 14°C |
| July | 5°C | 9°C | 12°C |
| August | 4°C | 9°C | 13°C |
| September | 8°C | 12°C | 16°C |
| October | 9°C | 14°C | 19°C |
| November | 10°C | 17°C | 23°C |
| December | 12°C | 18°C | 23°C |
Manawatū River: Water Temperature by Location
🔗 Palmerston North
Manawatū River: Weather Forecast
August 28
August 29
August 30
August 31
September 1
Location & Local Information
Source Ruahine Ranges • coordinates 40°0′53″S 176°7′1″E Mouth Tasman Sea • location Manawatū Estuary, Foxton Beach • coordinates 40°28′S 175°13′E • elevation Sea level Length 180 km (110 mi)
The Manawatū River flows from the Ruahine Range across the Manawatū Plains to the Tasman Sea, shaping much of the landscape in the Manawatū–Whanganui. Water temperature varies with season, rainfall, and river flow. In summer, the river typically warms to around 18–22 °C, which feels comfortable in slower, sun-exposed sections. During spring and autumn, temperatures usually sit between 14–18 °C. In winter, the water cools noticeably, often dropping to about 10–13 °C, making it feel cold even on mild days.
Swimming Conditions
Swimming in the Manawatū River is allowed and does take place, mainly during the summer months when water temperatures are highest. Locals tend to swim at known calm spots near riverbanks, beaches, or popular access points where currents are gentler. However, the river can be affected by heavy rainfall upstream, leading to higher flows, stronger currents, and reduced water clarity. These changes can happen quickly and influence safety. For this reason, swimming is best enjoyed during settled summer weather and at familiar locations. Outside the warmer months, cooler temperatures and increased flow generally discourage swimming. Overall, the Manawatū River offers reasonable summer swimming opportunities in suitable sections, while for much of the year it is more often enjoyed for walking, cycling, and its role as a scenic feature of the region rather than regular time spent in the water.