Lake Julius – water temperature at Leichhardt River
This page provides up-to-date information about the water temperature at Lake Julius, located on the Leichhardt 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 Leichhardt River at Lake Julius today is 18°C.
Water Temperature in Leichhardt River at Lake Julius: 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 Lake Juliusfell over the past month, but have levelled out during the last week.
According to our forecast, the water temperature in Lake Julius 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 |
|---|---|---|---|
| Jun 13 | 17.7°C | 20.0°C | |
| Jun 14 | 17.7°C | 20.0°C | |
| Jun 15 | 17.8°C | 20.0°C | |
| Jun 16 | 17.8°C | 20.0°C | |
| Jun 17 | 17.7°C | 20.0°C | |
| Jun 18 | 17.4°C | 20.0°C | |
| Jun 19 | 18.0°C | 20.0°C | |
| Jun 20 | 17.8°C | 20.0°C | |
| Jun 21 | 17.8°C | 20.0°C | 17.8°C |
| Jun 22 | 20.0°C | 18.1°C | |
| Jun 23 | 20.0°C | 18.4°C | |
| Jun 24 | 20.0°C | 18.6°C | |
| Jun 25 | 20.0°C | 18.9°C | |
| Jun 26 | 20.0°C | 19.2°C | |
| Jun 27 | 20.0°C | 19.5°C | |
| Jun 28 | 20.0°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 | 25°C | 29°C | 31°C |
| February | 25°C | 29°C | 32°C |
| March | 26°C | 29°C | 31°C |
| April | 23°C | 26°C | 29°C |
| May | 20°C | 23°C | 26°C |
| June | 17°C | 20°C | 22°C |
| July | 17°C | 20°C | 23°C |
| August | 18°C | 21°C | 25°C |
| September | 20°C | 25°C | 32°C |
| October | 22°C | 27°C | 33°C |
| November | 22°C | 27°C | 30°C |
| December | 22°C | 28°C | 31°C |
Location & Local Information
Lake Julius is a large freshwater storage on the Leichhardt River in north-west Queensland, and its water temperature reflects the hot Gulf Country climate. In summer, from December to March, surface water temperatures are typically warm, often around 26–32°C, especially during long, still periods of heat. Fresh inflows after rain can cool the lake briefly, but it usually warms up quickly again. During the drier months of autumn and spring, temperatures tend to sit in the 22–28°C range, which feels comfortable for most water activities. Winter is mild rather than cold, with water temperatures generally around 18–22°C, particularly in deeper parts of the lake where temperature changes are slower.
Swimming Conditions
Swimming in Lake Julius is generally allowed and does take place, particularly during the Dry Season when conditions are stable and the water is clear. The warm temperatures make swimming comfortable for longer periods, not just a quick dip. However, care is still required. The lake is in a region where crocodiles can be present, especially after wet seasons when animals move through connected waterways. For this reason, swimming is usually done in known areas and often with local advice. Water levels, weather and visibility should always be considered. When conditions are right, Lake Julius offers warm, inviting water, but sensible caution is an important part of using it safely.