Lake Ainsworth – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Ainsworth 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 Lake Ainsworth today is 24°C.
Water Temperature in Lake Ainsworth: Daily Trends, Historical Records, and Forecast
✅ Lake water between 20 and 25°C offers very comfortable swimming conditions for most people. Combined with warm air temperatures and calm weather, this range is ideal for extended swims and family activities. Because lakes lack strong currents, the water often feels gentler and warmer than rivers. Even with light cloud cover, swimming remains enjoyable.
Water Temperature Over the Last 30 Days
Over the past 30 days, water temperatures in Lake Ainsworth have generally increased, although a slight cooling trend has set in over the last week.
According to our forecast, the water temperature in Lake Ainsworth will be 24.7°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 |
|---|---|---|---|
| Mar 12 | 25.3°C | 24.8°C | |
| Mar 13 | 25.3°C | 24.8°C | |
| Mar 14 | 24.8°C | 24.8°C | |
| Mar 15 | 24.8°C | 24.8°C | |
| Mar 16 | 22.4°C | 24.8°C | |
| Mar 17 | 22.4°C | 24.8°C | |
| Mar 18 | 24.5°C | 24.8°C | |
| Mar 19 | 24.4°C | 24.8°C | |
| Mar 20 | 24.2°C | 24.8°C | 24.2°C |
| Mar 21 | 24.8°C | 24.3°C | |
| Mar 22 | 24.8°C | 24.4°C | |
| Mar 23 | 24.8°C | 24.4°C | |
| Mar 24 | 24.8°C | 24.5°C | |
| Mar 25 | 24.8°C | 24.6°C | |
| Mar 26 | 24.8°C | 24.7°C | |
| Mar 27 | 24.8°C | 24.7°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 | 23°C | 27°C | 29°C |
| February | 22°C | 27°C | 29°C |
| March | 21°C | 25°C | 27°C |
| April | 17°C | 22°C | 25°C |
| May | 12°C | 18°C | 22°C |
| June | 9°C | 16°C | 18°C |
| July | 9°C | 15°C | 16°C |
| August | 10°C | 16°C | 19°C |
| September | 12°C | 19°C | 22°C |
| October | 15°C | 22°C | 25°C |
| November | 18°C | 24°C | 27°C |
| December | 21°C | 26°C | 28°C |
Location & Local Information
Lake Ainsworth is a real hidden gem tucked away in Lennox Head, right across the road from Seven Mile Beach. It’s a natural tea tree lake, which means the water is a deep, dark amber colour from the tannins leaching out of the surrounding paperbark trees. During a cracking summer, the water is an absolute treat, usually warming up to a balmy 24°C to 27°C. It’s like stepping into a giant, room-temperature cup of tea. Even when the winter chill sets in during August, the mercury rarely drops below 18°C or 20°C, staying much more inviting than the local rivers further south.
Swimming Conditions
Swimming is definitely allowed and is a legendary part of life for the locals, who swear the tea tree oil makes your skin and hair feel soft as a butter. It’s a top-notch spot for families because the water is dead calm and there are no rips to worry about, unlike the ocean just over the dunes. You’ve just got to keep your wits about you and check the Ballina Council website for any blue-green algae alerts, as the lake can sometimes get a bit of a bloom when it's been stinking hot for too long. As long as the all clear is given, it’s a ripper place to float on a lilo, have a paddle, and soak up the healing vibes of the Bundjalung country.