Maryborough – water temperature at Mary River
This page provides up-to-date information about the water temperature at Maryborough, located on the Mary River in Queensland. 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 Mary River at Maryborough today is 17°C.
Water Temperature in Mary River at Maryborough: 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 Maryborough 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 Maryborough will be 16.5°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 |
|---|---|---|---|
| Jun 13 | 16.7°C | 16.5°C | |
| Jun 14 | 16.8°C | 16.5°C | |
| Jun 15 | 16.9°C | 16.5°C | |
| Jun 16 | 16.8°C | 16.5°C | |
| Jun 17 | 16.8°C | 16.5°C | |
| Jun 18 | 16.5°C | 16.5°C | |
| Jun 19 | 17.1°C | 16.5°C | |
| Jun 20 | 16.9°C | 16.5°C | |
| Jun 21 | 16.8°C | 16.5°C | 16.8°C |
| Jun 22 | 16.5°C | 16.8°C | |
| Jun 23 | 16.5°C | 16.7°C | |
| Jun 24 | 16.5°C | 16.7°C | |
| Jun 25 | 16.5°C | 16.7°C | |
| Jun 26 | 16.5°C | 16.6°C | |
| Jun 27 | 16.5°C | 16.6°C | |
| Jun 28 | 16.5°C | 16.5°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 | 29°C | 30°C |
| February | 26°C | 28°C | 30°C |
| March | 24°C | 27°C | 29°C |
| April | 21°C | 23°C | 26°C |
| May | 17°C | 20°C | 23°C |
| June | 14°C | 17°C | 19°C |
| July | 13°C | 16°C | 18°C |
| August | 15°C | 18°C | 22°C |
| September | 19°C | 22°C | 24°C |
| October | 21°C | 25°C | 27°C |
| November | 24°C | 26°C | 29°C |
| December | 26°C | 27°C | 29°C |
Location & Local Information
Maryborough sits on the lower reaches of the Mary River, where the river is wide, slow-moving and influenced by the coastal climate of south-east Queensland. Water temperatures here are fairly consistent through the year. In summer, from December to February, the river around Maryborough usually sits at about 24–28°C, sometimes feeling warmer in sheltered bends during long hot spells. Spring and autumn are comfortable, with water temperatures generally in the 20–24°C range. Winter is milder rather than cold, typically around 16–20°C, especially in deeper sections where temperature changes are gradual. Rainfall upstream can affect clarity and flow, but it rarely causes major drops in temperature.
Swimming Conditions
Swimming in the Mary River at Maryborough is technically allowed, but it’s not especially common. While the water temperature can be quite pleasant in summer, the lower river is tidal, with changing currents, boat traffic and variable water quality. After heavy rain, visibility can drop and debris can move through the channel, making swimming less appealing. There is also the possibility of bull sharks in the lower reaches, which adds another reason for caution. Because of this, locals generally avoid swimming in the river itself and instead choose nearby beaches, creeks or designated swimming areas. Around Maryborough, the Mary is better enjoyed for boating, fishing and riverside walks rather than regular swimming.