Gympie – water temperature at Mary River
This page provides up-to-date information about the water temperature at Gympie, 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 Gympie today is 19°C.
Water Temperature in Mary River at Gympie: 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 Gympie 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 Gympie will be 18.9°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 |
|---|---|---|---|
| Apr 28 | 19.9°C | 18.8°C | |
| Apr 29 | 19.8°C | 18.8°C | |
| Apr 30 | 19.6°C | 18.8°C | |
| May 1 | 19.6°C | 18.8°C | |
| May 2 | 19.6°C | 18.8°C | |
| May 3 | 19.5°C | 18.8°C | |
| May 4 | 19.4°C | 18.8°C | |
| May 5 | 19.4°C | 18.8°C | |
| May 6 | 19.4°C | 18.8°C | 19.4°C |
| May 7 | 18.8°C | 19.3°C | |
| May 8 | 18.8°C | 19.3°C | |
| May 9 | 18.8°C | 19.2°C | |
| May 10 | 18.8°C | 19.1°C | |
| May 11 | 18.8°C | 19.0°C | |
| May 12 | 18.8°C | 19.0°C | |
| May 13 | 18.8°C | 18.9°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 | 24°C | 27°C | 30°C |
| February | 24°C | 26°C | 30°C |
| March | 23°C | 25°C | 29°C |
| April | 19°C | 22°C | 26°C |
| May | 16°C | 19°C | 23°C |
| June | 13°C | 16°C | 19°C |
| July | 13°C | 15°C | 18°C |
| August | 13°C | 17°C | 22°C |
| September | 16°C | 20°C | 24°C |
| October | 18°C | 23°C | 27°C |
| November | 21°C | 25°C | 29°C |
| December | 23°C | 26°C | 29°C |
Location & Local Information
Gympie sits along the upper tidal reaches of the Mary River, where the water reflects the warm subtropical climate of south-east Queensland. Through summer, from December to February, river temperatures around Gympie are usually comfortable, commonly around 24–28°C, and can feel warmer in slow pools during long hot spells. Spring and autumn are milder, with water temperatures generally sitting between 20–24°C. Winter is cooler but still pleasant by most standards, typically around 16–20°C, especially in deeper sections where the water holds its warmth. Heavy rain upstream can cool the river temporarily and affect clarity, but overall temperatures remain fairly moderate year-round.
Swimming Conditions
Swimming in the Mary River at Gympie is allowed and does take place, particularly in summer when inland temperatures climb. The water is usually warm enough for a proper swim rather than just a quick dip, and locals tend to use familiar spots where access is easy and the current is gentler. That said, the river needs respect. After heavy rain, flows can rise quickly and visibility can drop, making swimming unsafe for a while. Further downstream, tidal influence and bull sharks are also factors. With settled weather and sensible spot choice, the Mary can offer a refreshing and enjoyable swimming option around Gympie.