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 24°C.
Water Temperature in Mary River at Maryborough: Daily Trends, Historical Records, and Forecast
✅ River water between 20 and 25°C is ideal for swimming and offers very comfortable conditions for most people. Combined with warm air temperatures and settled weather, this range is perfect for extended swims and family-friendly activities. Rivers may still feel slightly cooler than lakes due to gentle currents, which many swimmers find refreshing. Even on partly cloudy days, swimming remains enjoyable.
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 25.9°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 |
|---|---|---|---|
| Mar 12 | 24.0°C | 26.5°C | |
| Mar 13 | 24.7°C | 26.5°C | |
| Mar 14 | 24.6°C | 26.5°C | |
| Mar 15 | 25.2°C | 26.5°C | |
| Mar 16 | 24.3°C | 26.5°C | |
| Mar 17 | 24.3°C | 26.5°C | |
| Mar 18 | 24.3°C | 26.5°C | |
| Mar 19 | 24.4°C | 26.5°C | |
| Mar 20 | 24.1°C | 26.5°C | 24.1°C |
| Mar 21 | 26.5°C | 24.4°C | |
| Mar 22 | 26.5°C | 24.6°C | |
| Mar 23 | 26.5°C | 24.9°C | |
| Mar 24 | 26.5°C | 25.2°C | |
| Mar 25 | 26.5°C | 25.4°C | |
| Mar 26 | 26.5°C | 25.7°C | |
| Mar 27 | 26.5°C | 25.9°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.