Jualbup Lake – current water temperature and swimming conditions
This page provides information about the current water temperature at Jualbup Lake in Western Australia. Here you can view recent temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. A 7-day water temperature forecast, local weather conditions, and an overview of swimming suitability are also included.
Current Water Temperature
The water temperature in Jualbup Lake today is 19°C.
Water Temperature in Jualbup Lake: Daily Trends, Historical Records, and Forecast
⚠️ A lake temperature of 15 to 20°C is considered cool to comfortable for swimming in Australia. On warm days with light winds, this range allows for relaxed swimming, especially in shallow or sheltered areas. Comfort depends strongly on air temperature and sunshine, as cooler or overcast weather can still make the water feel chilly. This range is common during spring and early summer.
Water Temperature Over the Last 30 Days
While water temperatures in Jualbup Lake declined overall during the past month, they have shown a noticeable rebound over the last week.
According to our forecast, the water temperature in Jualbup Lake will be 20.7°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 | 19.0°C | 19.0°C | |
| Apr 29 | 19.0°C | 19.0°C | |
| Apr 30 | 19.0°C | 19.0°C | |
| May 1 | 19.0°C | 19.0°C | |
| May 2 | 19.0°C | 19.0°C | |
| May 3 | 17.8°C | 19.0°C | |
| May 4 | 17.7°C | 19.0°C | |
| May 5 | 17.5°C | 19.0°C | |
| May 6 | 19.4°C | 19.0°C | 19.4°C |
| May 7 | 19.0°C | 19.6°C | |
| May 8 | 19.0°C | 19.8°C | |
| May 9 | 19.0°C | 20.0°C | |
| May 10 | 19.0°C | 20.2°C | |
| May 11 | 19.0°C | 20.3°C | |
| May 12 | 19.0°C | 20.5°C | |
| May 13 | 19.0°C | 20.7°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual lake water temperatures may differ from the reported values by several degrees, particularly during periods of strong winds or rapid weather changes. Wind can mix surface and deeper layers in a lake, bringing cooler water to the surface, while shallow areas may warm more quickly under direct sunlight. Air temperature, sunshine, and cloud cover strongly influence how quickly a lake heats up or cools down. These factors can lead to noticeable temperature variations across different parts of the lake.
Our forecast is based on a proprietary mathematical model that considers real-time lake temperature observations, historical trends, seasonal cycles, wind strength and direction, and region-specific air temperature. To enhance accuracy, we also incorporate data from nearby monitored locations and comparable lakes within Australia.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Today | Yesterday | A Week Ago |
|---|---|---|---|
| January | 21°C | 22°C | 25°C |
| February | 21°C | 22°C | 25°C |
| March | 21°C | 22°C | 24°C |
| April | 19°C | 20°C | 22°C |
| May | 17°C | 19°C | 20°C |
| June | 16°C | 21°C | 24°C |
| July | 16°C | 21°C | 24°C |
| August | 17°C | 21°C | 24°C |
| September | 17°C | 21°C | 24°C |
| October | 18°C | 22°C | 24°C |
| November | 20°C | 22°C | 24°C |
| December | 21°C | 22°C | 24°C |
Location & Local Information
Lake Jualbup, sitting in the heart of Shenton Park in Perth’s western suburbs, is a beautiful place where water rises, as its Noongar name suggests. Being a shallow, semi-permanent wetland, the water temperature fluctuates significantly with the West Aussie seasons. During a stinking hot summer, the water can warm up to a toasty 24°C to 28°C, though the lake often dries out completely, leaving behind a salty crust and sun-baked mud. When the winter rains finally kick in, the mercury takes a proper dive, with the fresh runoff usually sitting between a brisk 12°C and 16°C. It’s the kind of spot that looks absolutely lush when full, but it holds its heat and loses its volume fast once the summer sun starts cracking the flags.
Swimming Conditions
As for having a splash, swimming is strictly a no-go at Lake Jualbup. The lake is managed as a vital sanctuary for local wildlife, including long-necked turtles and black swans, and the water quality isn't up to scratch for a dip. Because it’s a natural catchment for urban runoff, the water can sometimes host a few nasties like blue-green algae or avian botulism, especially when the levels get low and the water turns a bit stagnant. Most folks reckon it's a top-tier spot for a lakeside barbie, a walk around the paved track, or letting the kids loose on the playground, but you’re best off saving your swimming for the coast. It’s a place for soaking up the serenity and birdwatching rather than jumping in head-first.