Wallis Lake – current water temperature and swimming conditions
This page provides information about the current water temperature at Wallis Lake in New South Wales. 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 Wallis Lake today is 19°C.
Water Temperature in Wallis 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
Water temperatures in Wallis Lake 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 Wallis Lake will be 18.1°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 | 20.0°C | 18.0°C | |
| Apr 29 | 20.0°C | 18.0°C | |
| Apr 30 | 20.0°C | 18.0°C | |
| May 1 | 20.0°C | 18.0°C | |
| May 2 | 19.2°C | 18.0°C | |
| May 3 | 19.3°C | 18.0°C | |
| May 4 | 19.1°C | 18.0°C | |
| May 5 | 19.2°C | 18.0°C | |
| May 6 | 19.1°C | 18.0°C | 19.1°C |
| May 7 | 18.0°C | 19.0°C | |
| May 8 | 18.0°C | 18.8°C | |
| May 9 | 18.0°C | 18.7°C | |
| May 10 | 18.0°C | 18.6°C | |
| May 11 | 18.0°C | 18.4°C | |
| May 12 | 18.0°C | 18.3°C | |
| May 13 | 18.0°C | 18.1°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 | 24°C | 26°C | 28°C |
| February | 24°C | 26°C | 28°C |
| March | 21°C | 24°C | 26°C |
| April | 20°C | 22°C | 24°C |
| May | 15°C | 18°C | 21°C |
| June | 13°C | 15°C | 17°C |
| July | 13°C | 14°C | 16°C |
| August | 13°C | 15°C | 19°C |
| September | 16°C | 20°C | 22°C |
| October | 11°C | 22°C | 25°C |
| November | 21°C | 24°C | 25°C |
| December | 21°C | 25°C | 27°C |
Location & Local Information
Wallis Lake sits behind the beaches of the Mid North Coast and is one of the region’s largest coastal lakes, with sheltered waters and a mild coastal climate. Water temperatures in the lake vary gently through the year. In summer, Wallis Lake usually warms to around 22–26°C, which feels comfortably warm and ideal for swimming. Spring and autumn are slightly cooler, typically sitting between 18–22°C, still pleasant on clear, sunny days. During winter, the water cools to about 14–18°C, giving it a fresh feel but remaining milder than many inland lakes or nearby ocean waters.
Swimming Conditions
Swimming in Wallis Lake is allowed and widely enjoyed, particularly in calm bays and along sandy shorelines away from boating channels. The lake has minimal wave action and generally gentle currents, making it suitable for relaxed swimming and family-friendly use. Water quality is usually good in dry conditions, and the sheltered nature of the lake provides more predictable conditions than the open sea. After heavy rainfall, runoff can temporarily affect clarity and slightly lower water temperatures, so swimmers often wait for conditions to settle. Overall, Wallis Lake offers reliable seasonal swimming opportunities, combining moderate water temperatures with calm, protected conditions that suit casual swimmers and those looking for an easy alternative to the surf beaches nearby.