Upper Hutt – current water temperature and swimming conditions
This page provides information about the current water temperature at Upper Hutt in Wellington Region. 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 Hutt River at Upper Hutt today is 10°C.
Water Temperature in Hutt River at Upper Hutt: 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 Upper Hutt 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 Upper Hutt will be 8.9°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 | 12.9°C | 8.8°C | |
| Aug 20 | 12.6°C | 8.8°C | |
| Aug 21 | 12.5°C | 8.8°C | |
| Aug 22 | 12.8°C | 8.8°C | |
| Aug 23 | 12.9°C | 8.8°C | |
| Aug 24 | 13.2°C | 8.8°C | |
| Aug 25 | 9.5°C | 8.8°C | |
| Aug 26 | 9.5°C | 8.8°C | |
| Aug 27 | 9.5°C | 8.8°C | 9.5°C |
| Aug 28 | 8.8°C | 9.4°C | |
| Aug 29 | 8.8°C | 9.3°C | |
| Aug 30 | 8.8°C | 9.2°C | |
| Aug 31 | 8.8°C | 9.2°C | |
| Sep 1 | 8.8°C | 9.1°C | |
| Sep 2 | 8.8°C | 9.0°C | |
| Sep 3 | 8.8°C | 8.9°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 | 8°C | 13°C | 18°C |
| February | 9°C | 14°C | 19°C |
| March | 7°C | 12°C | 17°C |
| April | 6°C | 10°C | 14°C |
| May | 6°C | 10°C | 13°C |
| June | 4°C | 8°C | 12°C |
| July | 3°C | 7°C | 10°C |
| August | 4°C | 7°C | 10°C |
| September | 4°C | 8°C | 12°C |
| October | 4°C | 8°C | 12°C |
| November | 4°C | 9°C | 14°C |
| December | 7°C | 12°C | 17°C |
Upper Hutt: Weather Forecast
August 28
August 29
August 30
August 31
September 1
Location & Local Information
Upper Hutt, in the Wellington Region, lies along the middle reaches of the Hutt River as it flows from the Tararua Ranges towards Wellington Harbour. In this section, water temperatures reflect both upland sources and warmer valley conditions. During winter, the river near Upper Hutt is generally cool, averaging around 8–11°C. In spring, temperatures typically rise to between 12 and 16°C as air temperatures increase. Through summer, especially in January and February, calmer stretches and well-known swimming holes can warm to approximately 17–22°C on fine days. By autumn, temperatures usually ease back to around 13–17°C. Periods of heavy rain in the ranges can temporarily lower temperatures and raise river levels.
Swimming Conditions
Swimming is allowed in suitable parts of the Hutt River near Upper Hutt, and it is a popular local activity during warm summer weather. The most comfortable conditions are generally when water temperatures reach or exceed 18°C and flows are steady. However, swimmers should be mindful of moderate currents, deeper pools and shifting gravel beds. After significant rainfall, the river can rise quickly and water clarity may decrease, making swimming less suitable. Choosing recognised swimming spots and checking regional water quality information beforehand helps ensure a safer experience.