Maclean – water temperature at Clarence River
This page provides up-to-date information about the water temperature at Maclean, 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 Maclean today is 19°C.
Water Temperature in Clarence River at Maclean: 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 Maclean 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 Maclean will be 19.7°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 | 19.7°C | |
| Apr 29 | 21.0°C | 19.7°C | |
| Apr 30 | 21.0°C | 19.7°C | |
| May 1 | 21.0°C | 19.7°C | |
| May 2 | 21.0°C | 19.7°C | |
| May 3 | 19.3°C | 19.7°C | |
| May 4 | 19.2°C | 19.7°C | |
| May 5 | 19.2°C | 19.7°C | |
| May 6 | 19.4°C | 19.7°C | 19.4°C |
| May 7 | 19.7°C | 19.4°C | |
| May 8 | 19.7°C | 19.5°C | |
| May 9 | 19.7°C | 19.5°C | |
| May 10 | 19.7°C | 19.6°C | |
| May 11 | 19.7°C | 19.6°C | |
| May 12 | 19.7°C | 19.6°C | |
| May 13 | 19.7°C | 19.7°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 | 27°C | 28°C | 29°C |
| February | 25°C | 27°C | 29°C |
| March | 23°C | 25°C | 27°C |
| April | 21°C | 23°C | 25°C |
| May | 17°C | 20°C | 22°C |
| June | 16°C | 17°C | 18°C |
| July | 15°C | 16°C | 16°C |
| August | 15°C | 17°C | 20°C |
| September | 17°C | 20°C | 22°C |
| October | 21°C | 23°C | 25°C |
| November | 24°C | 26°C | 27°C |
| December | 25°C | 27°C | 28°C |
Location & Local Information
Maclean sits on the banks of the Clarence River, where the river is wide, tidal and strongly influenced by the coastal climate. Water temperatures here are generally mild to warm for much of the year. In summer, from December to February, the Clarence around Maclean usually sits at about 22–26°C, sometimes feeling warmer in sheltered areas during hot spells. Spring and autumn are comfortable, with water temperatures typically in the 18–23°C range. Winter brings the coolest conditions, but the river rarely feels cold, usually holding at around 16–20°C, especially in deeper parts of the channel where temperature changes are gradual. Tidal movement can cause short-term shifts in both temperature and water feel.
Swimming Conditions
Swimming in the Clarence River at Maclean is allowed, but it’s more common away from the main channel. While the water temperature is often pleasant enough for swimming in summer, the river here is tidal and busy, with strong currents and regular boat traffic. For this reason, locals tend to swim in calmer side creeks, river beaches or designated spots rather than straight off the main banks. After heavy rain, visibility can drop and flows can increase, making swimming less suitable. With sensible location choice and settled conditions, the Clarence can offer good swimming options around Maclean, but care and local knowledge are important.