Katherine River – current river water temperature and swimming conditions
This page shows the current river water temperature at Katherine River in Northern Territory. You can explore recent temperature trends, typical monthly ranges, and historical averages for this date. The page also includes a 7-day water temperature forecast, local weather conditions, and an overview of how suitable the river is for swimming.
Current Water Temperature
The water temperature in Katherine River today is 28°C.
Water Temperature in Katherine River: Daily Trends, Historical Records, and Forecast
✅ River temperatures above 25°C feel warm and are well suited to leisurely swimming and floating. Comfort remains high even if air temperatures are slightly cooler, though hot weather can make the water feel less refreshing. In slower-flowing rivers, very warm water may feel stagnant, especially during heatwaves. Weather conditions such as strong sun or high humidity can further influence how pleasant the swim feels.
Water Temperature Over the Last 30 Days
While water temperatures in Katherine River declined overall during the past month, they have shown a noticeable rebound over the last week.
According to our forecast, the water temperature in Katherine River will be 27.4°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 |
|---|---|---|---|
| Apr 28 | 28.2°C | 27.3°C | |
| Apr 29 | 28.2°C | 27.3°C | |
| Apr 30 | 25.4°C | 27.3°C | |
| May 1 | 25.2°C | 27.3°C | |
| May 2 | 28.0°C | 27.3°C | |
| May 3 | 28.2°C | 27.3°C | |
| May 4 | 28.1°C | 27.3°C | |
| May 5 | 28.1°C | 27.3°C | |
| May 6 | 28.1°C | 27.3°C | 28.1°C |
| May 7 | 27.3°C | 28.0°C | |
| May 8 | 27.3°C | 27.9°C | |
| May 9 | 27.3°C | 27.8°C | |
| May 10 | 27.3°C | 27.7°C | |
| May 11 | 27.3°C | 27.6°C | |
| May 12 | 27.3°C | 27.5°C | |
| May 13 | 27.3°C | 27.4°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 Australia to improve accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Today | Yesterday | A Week Ago |
|---|---|---|---|
| January | 26°C | 30°C | 33°C |
| February | 29°C | 31°C | 33°C |
| March | 27°C | 31°C | 33°C |
| April | 25°C | 29°C | 32°C |
| May | 16°C | 27°C | 31°C |
| June | 17°C | 26°C | 31°C |
| July | 31°C | 31°C | 31°C |
| August | 31°C | 31°C | 32°C |
| September | 27°C | 31°C | 32°C |
| October | 26°C | 31°C | 33°C |
| November | 27°C | 31°C | 33°C |
| December | 27°C | 30°C | 33°C |
Location & Local Information
Length 328 kilometres (204 mi)
The Katherine River flows through the rugged landscape of the Northern Territory, cutting through sandstone gorges and open savannah country. Its water temperature stays warm for most of the year due to the tropical climate. In the dry season, which runs roughly from May to September, the river usually sits around 24–28°C, making it very comfortable for swimming. During the hotter build-up and wet season months, temperatures often rise to about 28–32°C, especially in slower pools where the water absorbs more heat. Even at its coolest, the river rarely feels cold, which sets it apart from rivers further south.
Swimming Conditions
Swimming in the Katherine River is generally allowed and very popular, particularly during the dry season when water levels are stable and visibility is good. Calm sections within the gorge system are well known for safe swimming, with clear water and minimal current. In the wet season, however, swimming is not recommended. Heavy rain can cause rapid rises in water level, stronger currents, reduced visibility, and an increased risk from wildlife. When conditions are right, the Katherine River offers some of the best freshwater swimming in northern Australia, combining warm water with sheltered pools that provide reliable relief from the intense Top End heat.