Iluka – water temperature at Clarence River
This page provides up-to-date information about the water temperature at Iluka, located on the Clarence River in New South Wales. Here you can check current conditions, view recent temperature trends, explore typical monthly ranges, and compare today’s reading with historical averages for this date. The page also includes a 7-day water temperature forecast, local weather information, and swimming conditions.
Current Water Temperature
The water temperature in Clarence River at Iluka today is 19°C.
Water Temperature in Clarence River at Iluka: 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 Iluka 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 Iluka will be 19.4°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 | 21.0°C | 19.5°C | |
| Apr 29 | 21.0°C | 19.5°C | |
| Apr 30 | 21.0°C | 19.5°C | |
| May 1 | 21.0°C | 19.5°C | |
| May 2 | 21.0°C | 19.5°C | |
| May 3 | 18.9°C | 19.5°C | |
| May 4 | 18.8°C | 19.5°C | |
| May 5 | 18.7°C | 19.5°C | |
| May 6 | 18.9°C | 19.5°C | 18.9°C |
| May 7 | 19.5°C | 19.0°C | |
| May 8 | 19.5°C | 19.1°C | |
| May 9 | 19.5°C | 19.1°C | |
| May 10 | 19.5°C | 19.2°C | |
| May 11 | 19.5°C | 19.3°C | |
| May 12 | 19.5°C | 19.4°C | |
| May 13 | 19.5°C | 19.4°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 | 28°C | 29°C |
| February | 26°C | 27°C | 29°C |
| March | 23°C | 25°C | 27°C |
| April | 21°C | 23°C | 25°C |
| May | 18°C | 20°C | 22°C |
| June | 16°C | 17°C | 18°C |
| July | 11°C | 16°C | 16°C |
| August | 16°C | 17°C | 20°C |
| September | 18°C | 20°C | 22°C |
| October | 21°C | 23°C | 25°C |
| November | 24°C | 26°C | 27°C |
| December | 26°C | 27°C | 28°C |
Location & Local Information
Iluka sits at the mouth of the Clarence River on the far north coast of New South Wales, where the wide estuary creates calm, sheltered water conditions. Water temperatures in the river reflect the region’s warm subtropical climate and are generally comfortable for swimming for much of the year. In summer, the river typically warms to around 24–27 °C, often feeling slightly warmer than the nearby ocean on still days. Autumn usually remains pleasant, with temperatures holding between 22–25 °C as air temperatures ease. Spring starts cooler at roughly 20–23 °C before warming steadily toward summer. Winter is the coolest period, but river temperatures commonly sit around 17–20 °C, which many locals still find suitable for a short swim, especially on sunny days.
Swimming Conditions
Swimming is allowed and popular in Iluka, particularly in the calmer sections of the Clarence River where there is little swell and generally gentle current. These sheltered waters suit relaxed swimming and are often favoured by families and anyone looking to avoid open surf. Tides can influence water movement, so conditions vary slightly through the day, but overall the river remains approachable. With its steady temperatures and protected setting, Iluka offers reliable river swimming opportunities across much of the year, especially for those who prefer calm water over ocean beaches.