Lake Monginup – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Monginup 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 Lake Monginup today is 17°C.
Water Temperature in Lake Monginup: 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
Water temperatures in Lake Monginup 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 Lake Monginup will be 16.3°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 | 16.5°C | 15.0°C | |
| Apr 29 | 16.2°C | 15.0°C | |
| Apr 30 | 18.1°C | 15.0°C | |
| May 1 | 18.2°C | 15.0°C | |
| May 2 | 16.3°C | 15.0°C | |
| May 3 | 17.8°C | 15.0°C | |
| May 4 | 17.4°C | 15.0°C | |
| May 5 | 15.8°C | 15.0°C | |
| May 6 | 16.6°C | 15.0°C | 16.6°C |
| May 7 | 15.0°C | 16.6°C | |
| May 8 | 15.0°C | 16.5°C | |
| May 9 | 15.0°C | 16.5°C | |
| May 10 | 15.0°C | 16.4°C | |
| May 11 | 15.0°C | 16.4°C | |
| May 12 | 15.0°C | 16.3°C | |
| May 13 | 15.0°C | 16.3°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 | 23°C | 26°C |
| February | 21°C | 23°C | 26°C |
| March | 19°C | 21°C | 24°C |
| April | 16°C | 18°C | 21°C |
| May | 13°C | 15°C | 18°C |
| June | 11°C | 13°C | 15°C |
| July | 11°C | 12°C | 14°C |
| August | 12°C | 14°C | 16°C |
| September | 13°C | 16°C | 19°C |
| October | 16°C | 19°C | 21°C |
| November | 18°C | 21°C | 24°C |
| December | 19°C | 22°C | 24°C |
Location & Local Information
Lake Monginup is a serene freshwater retreat tucked away in the Esperance region of Western Australia, sitting within a lush nature reserve. When it comes to the water temperature, the lake follows the local South Coast climate, which means it’s generally invigorating. During a cracking summer, the shallow, sun-warmed waters typically sit between 19°C and 22°C, making it a refreshed alternative to the salty ocean spray. In the winter months, the mercury takes a proper dive, often hovering between a brisk 12°C and 15°C. Because it’s a smaller, sheltered body of water, it doesn't have the same wild temperature swings as the open sea, but it definitely holds a bit of a nip that’ll give you a sharp wake-up call on a crisp morning.
Swimming Conditions
Swimming is technically allowed, but it isn't the main drawcard for the area like the crystal-clear lagoons at Twilight Beach. Most folks head to Lake Monginup for the legendary birdwatching and the boardwalks rather than a head-first dive. The water is often stained a deep tea-colour from the surrounding paperbarks and can be quite reedy around the edges, which makes for a bit of a mushy entry. You’ve also got to keep your wits about you regarding the water levels; in a dry season, it can get a bit shallow and stagnant, which isn't ideal for a soak. As long as you don't mind a bit of a wild, natural dip and you’re prepared for the cool temperatures, it’s a peaceful spot to wash off the dust of the South Coast Highway.