Dargaville – current water temperature and swimming conditions
This page provides information about the current water temperature at Dargaville 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 Wairoa River Northland at Dargaville today is 17°C.
Water Temperature in Wairoa River Northland at Dargaville: 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
Water temperatures in Dargaville 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 Dargaville will be 14.8°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 7 | 17.1°C | 14.5°C | |
| May 8 | 17.1°C | 14.5°C | |
| May 9 | 17.5°C | 14.5°C | |
| May 10 | 17.5°C | 14.5°C | |
| May 11 | 17.5°C | 14.5°C | |
| May 12 | 17.5°C | 14.5°C | |
| May 13 | 17.2°C | 14.5°C | |
| May 14 | 15.5°C | 14.5°C | |
| May 15 | 16.6°C | 14.5°C | 16.6°C |
| May 16 | 14.5°C | 16.3°C | |
| May 17 | 14.5°C | 16.1°C | |
| May 18 | 14.5°C | 15.8°C | |
| May 19 | 14.5°C | 15.6°C | |
| May 20 | 14.5°C | 15.3°C | |
| May 21 | 14.5°C | 15.0°C | |
| May 22 | 14.5°C | 14.8°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 | 16°C | 22°C | 27°C |
| February | 17°C | 22°C | 27°C |
| March | 16°C | 20°C | 24°C |
| April | 14°C | 18°C | 22°C |
| May | 10°C | 15°C | 19°C |
| June | 7°C | 12°C | 16°C |
| July | 6°C | 11°C | 15°C |
| August | 8°C | 12°C | 15°C |
| September | 10°C | 14°C | 18°C |
| October | 11°C | 15°C | 19°C |
| November | 15°C | 19°C | 23°C |
| December | 17°C | 22°C | 26°C |
Dargaville: Weather Forecast
May 15
May 16
May 17
May 18
May 19
May 20
Location & Local Information
Dargaville, in the Northland Region, sits on the banks of the Wairoa River as it makes its way toward the Kaipara Harbour. In this lower reach, water temperatures reflect the region’s warm subtropical climate and some tidal influence. During winter, the river near Dargaville is generally mild, with temperatures around 12–16°C. In spring, readings typically rise to between 16 and 20°C. Through summer, especially in January and February, calmer upstream sections can reach approximately 21–26°C on hot Northland days, while areas closer to the tidal zone may vary slightly depending on flow and harbour influence. By autumn, temperatures usually ease back to between 17 and 21°C. Heavy rainfall can briefly cool the water and increase turbidity.
Swimming Conditions
Swimming is allowed in suitable parts of the Wairoa River near Dargaville, particularly in quieter stretches away from boat traffic and strong tidal currents. The most comfortable conditions are generally in mid to late summer when water temperatures exceed 20°C and flows are steady. However, swimmers should be mindful of changing currents, especially in tidal sections, and reduced water clarity after rain. Choosing recognised access points and checking local water quality information beforehand helps ensure a safer and more enjoyable freshwater swimming experience.