Wallaga Lake – current water temperature and swimming conditions

This page provides information about the current water temperature at Wallaga 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

16.3°C

Today

16.4°C

Yesterday

16.9°C

A Week Ago

The water temperature in Wallaga Lake today is 16°C.

Water Temperature in Wallaga 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 Wallaga 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 Wallaga Lake will be 13.7°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	17.3°C	13.3°C
Apr 29	17.2°C	13.3°C
Apr 30	16.9°C	13.3°C
May 1	16.6°C	13.3°C
May 2	16.6°C	13.3°C
May 3	16.4°C	13.3°C
May 4	16.4°C	13.3°C
May 5	16.4°C	13.3°C
May 6	16.3°C	13.3°C	16.3°C
May 7		13.3°C	15.9°C
May 8		13.3°C	15.6°C
May 9		13.3°C	15.2°C
May 10		13.3°C	14.8°C
May 11		13.3°C	14.4°C
May 12		13.3°C	14.1°C
May 13		13.3°C	13.7°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	22°C	23°C	24°C
February	21°C	23°C	25°C
March	18°C	20°C	22°C
April	13°C	18°C	21°C
May	10°C	13°C	18°C
June	8°C	10°C	11°C
July	8°C	9°C	10°C
August	8°C	10°C	12°C
September	12°C	14°C	16°C
October	14°C	17°C	20°C
November	17°C	20°C	21°C
December	19°C	21°C	24°C

Location & Local Information

Wallaga Lake is a large coastal lagoon on the far south coast of New South Wales, sheltered from the open ocean and influenced mainly by local weather and seasonal change. Water temperatures here are moderate and fairly steady through the year. In summer, the lake usually warms to around 22–25°C, feeling comfortably warm and well suited to swimming. Spring and autumn tend to sit in the 18–22°C range, which is still pleasant on sunny days. During winter, water temperatures commonly drop to about 14–18°C, cool but not extreme, especially compared with the nearby ocean, which is often colder and rougher.

Swimming Conditions

Swimming in Wallaga Lake is generally allowed and enjoyed in suitable, calm areas, particularly during the warmer months. The lake is mostly protected from swell and has gentle conditions, with little current away from the entrance channel. Shallow shorelines make access easy, which suits relaxed swimming and casual dips. Water quality is usually good in settled weather, though after heavy rain the lake can become cooler and slightly murky due to runoff, and swimming is often postponed until conditions improve. Overall, Wallaga Lake offers reliable seasonal swimming with moderate water temperatures, providing a quiet and sheltered alternative to ocean beaches for those looking to swim in calmer, more predictable conditions.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Wallaga Lake?

The water temperature in Wallaga Lake today is 16°C.

What is the water temperature in Wallaga Lake during the summer months?

In summer, water temperatures in Wallaga Lake typically range from 19°C to 25°C.

Is it possible to swim in Wallaga Lake (New South Wales)?

Yes — Wallaga Lake is commonly used for swimming, kayaking and boating, with a number of sheltered shallow spots suitable for a dip, though conditions change with tides, river inflows and wind. Always check local water-quality advisories and signage, avoid boat channels, be mindful the water can be quite cool outside summer and after heavy rain, and only swim where it feels safe or is being supervised.