Wairoa River Northland – current water temperature and swimming conditions
This page provides information about the current water temperature at Wairoa River Northland 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 today is 11°C.
Water Temperature in Wairoa River Northland: 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 Wairoa River Northland 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 Wairoa River Northland will be 12.8°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 |
|---|---|---|---|
| Aug 19 | 16.0°C | 13.0°C | |
| Aug 20 | 16.0°C | 13.0°C | |
| Aug 21 | 15.4°C | 13.0°C | |
| Aug 22 | 15.5°C | 13.0°C | |
| Aug 23 | 15.6°C | 13.0°C | |
| Aug 24 | 15.6°C | 13.0°C | |
| Aug 25 | 11.4°C | 13.0°C | |
| Aug 26 | 11.4°C | 13.0°C | |
| Aug 27 | 11.4°C | 13.0°C | 11.4°C |
| Aug 28 | 13.0°C | 11.6°C | |
| Aug 29 | 13.0°C | 11.8°C | |
| Aug 30 | 13.0°C | 12.0°C | |
| Aug 31 | 13.0°C | 12.2°C | |
| Sep 1 | 13.0°C | 12.4°C | |
| Sep 2 | 13.0°C | 12.6°C | |
| Sep 3 | 13.0°C | 12.8°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 |
Wairoa River Northland: Water Temperature by Location
🔗 Dargaville
Wairoa River Northland: Weather Forecast
August 28
August 29
August 30
August 31
September 1
Location & Local Information
Source: • location Near Dargaville Mouth: • location Kaipara Harbour Length 150 km
The Wairoa River in Northland flows south from the Tangihua Ranges through Dargaville before entering the Kaipara Harbour. As one of the largest rivers in Northland, its water temperature reflects the region’s warm, subtropical climate as well as tidal influence in the lower reaches. In winter, temperatures are generally around 12–16°C. During spring, the river gradually warms to approximately 16–20°C. In summer, particularly in January and February, calmer upstream sections can reach about 21–26°C on hot days, while tidally influenced areas closer to the harbour may vary slightly. By autumn, temperatures usually ease back to between 17 and 21°C. Heavy rainfall can briefly lower temperatures and increase flow and turbidity.
Swimming Conditions
Swimming is allowed in parts of the Wairoa River, particularly in quieter upstream stretches away from strong currents and boat traffic. The most comfortable conditions are typically in mid to late summer when water temperatures exceed 20°C and flows are steady. However, swimmers should be cautious in tidal sections, where currents and water clarity can change. It is advisable to avoid swimming after significant rainfall, when runoff may affect water quality. Checking local conditions before entering the water helps ensure a safer and more enjoyable experience.