Mangamuka River – current water temperature and swimming conditions
This page provides information about the current water temperature at Mangamuka River in Northland 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 Mangamuka River today is 15°C.
Water Temperature in Mangamuka River: Daily Trends, Historical Records, and Forecast
⚠️ River water between 10 and 15°C is cold but manageable for short swims, especially on sunny days with warm air temperatures. The moving nature of a river can make the water feel colder than the actual reading, particularly in shaded or deeper sections. Casual swimming is usually brief, with wetsuits often preferred. Windy or cool weather can significantly reduce comfort, even when the air temperature is mild.
Water Temperature Over the Last 30 Days
Water temperatures in Mangamuka 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 Mangamuka River will be 13.2°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 |
|---|---|---|---|
| May 6 | 15.3°C | 13.0°C | |
| May 7 | 17.0°C | 13.0°C | |
| May 8 | 17.4°C | 13.0°C | |
| May 9 | 17.4°C | 13.0°C | |
| May 10 | 17.5°C | 13.0°C | |
| May 11 | 17.5°C | 13.0°C | |
| May 12 | 15.4°C | 13.0°C | |
| May 13 | 15.4°C | 13.0°C | |
| May 14 | 14.8°C | 13.0°C | 14.8°C |
| May 15 | 13.0°C | 14.6°C | |
| May 16 | 13.0°C | 14.4°C | |
| May 17 | 13.0°C | 14.1°C | |
| May 18 | 13.0°C | 13.9°C | |
| May 19 | 13.0°C | 13.7°C | |
| May 20 | 13.0°C | 13.5°C | |
| May 21 | 13.0°C | 13.2°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 | 14°C | 20°C | 25°C |
| February | 15°C | 20°C | 25°C |
| March | 14°C | 18°C | 21°C |
| April | 11°C | 16°C | 20°C |
| May | 8°C | 13°C | 18°C |
| June | 7°C | 12°C | 16°C |
| July | 4°C | 9°C | 14°C |
| August | 6°C | 10°C | 14°C |
| September | 8°C | 12°C | 16°C |
| October | 10°C | 14°C | 17°C |
| November | 12°C | 16°C | 19°C |
| December | 15°C | 19°C | 23°C |
Mangamuka River: Weather Forecast
May 15
May 16
May 17
May 18
May 19
Location & Local Information
The Mangamuka River in Northland flows through a warm, humid part of the Far North, and its water temperature reflects the region’s mild climate. During summer, river temperatures typically range from about 18°C to 23°C, especially in slower, sheltered sections where the sun can warm the surface water. In late spring and early autumn, temperatures are usually between 15°C and 19°C, while in winter they can drop to around 10°C to 14°C. Because it is a relatively small river with shaded stretches and variable flow, temperatures may change quickly after heavy rain, when cooler runoff enters the channel and lowers the overall warmth.
Swimming Conditions
Swimming is generally possible in the Mangamuka River, particularly in calm pools and wider bends where the current is gentle. In summer, when water temperatures rise above 20°C, conditions can feel comfortable for short recreational swims. However, after periods of rainfall the river may become faster-flowing and more turbid, which can reduce both safety and water clarity. As with many rural rivers in Northland, swimmers should check local conditions before entering, especially regarding flow levels and water quality. On settled, warm days, the Mangamuka offers a refreshing inland swimming option in a natural setting.