Lake Macquarie – current water temperature and swimming conditions
This page provides information about the current water temperature at Lake Macquarie 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 Macquarie today is 20°C.
Water Temperature in Lake Macquarie: 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 Macquarie 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 Macquarie will be 17.6°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 | 20.8°C | 17.3°C | |
| Apr 29 | 20.7°C | 17.3°C | |
| Apr 30 | 20.6°C | 17.3°C | |
| May 1 | 20.6°C | 17.3°C | |
| May 2 | 20.0°C | 17.3°C | |
| May 3 | 20.0°C | 17.3°C | |
| May 4 | 20.0°C | 17.3°C | |
| May 5 | 20.0°C | 17.3°C | |
| May 6 | 19.9°C | 17.3°C | 19.9°C |
| May 7 | 17.3°C | 19.6°C | |
| May 8 | 17.3°C | 19.3°C | |
| May 9 | 17.3°C | 18.9°C | |
| May 10 | 17.3°C | 18.6°C | |
| May 11 | 17.3°C | 18.3°C | |
| May 12 | 17.3°C | 18.0°C | |
| May 13 | 17.3°C | 17.6°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 | 20°C | 26°C | 28°C |
| February | 18°C | 24°C | 28°C |
| March | 16°C | 24°C | 27°C |
| April | 19°C | 21°C | 24°C |
| May | 15°C | 17°C | 20°C |
| June | 12°C | 14°C | 16°C |
| July | 12°C | 13°C | 15°C |
| August | 13°C | 14°C | 17°C |
| September | 16°C | 18°C | 19°C |
| October | 18°C | 21°C | 23°C |
| November | 21°C | 23°C | 25°C |
| December | 21°C | 25°C | 27°C |
Lake Macquarie: Water Temperature by Location
Pelican Beach
Swansea Bay Beach
Raffertys Beach
Sandy Beach Reserve
🔗 Brightwaters Baths
Sunshine Baths Reserve
Pearl Beach
Pebbly Beach
🔗 Wangi Wangi
Kilaben Bay
Zen's Beach
🔗 Marmong Picnic Area
🔗 Belmont Baths
Location & Local Information
Lake Macquarie, sitting just south of Newcastle, is Australia’s largest coastal saltwater lake and a popular spot for locals who enjoy being on the water. Water temperatures here are generally comfortable for much of the year thanks to the lake’s shallow depths and sheltered nature. In summer, from December through February, surface temperatures commonly sit around 22–25 °C, sometimes nudging a bit higher during prolonged hot spells. Spring and autumn are milder, with water usually in the 18–22 °C range, while winter brings cooler conditions, typically around 14–17 °C. Because the lake warms and cools more gently than the open ocean, it often feels more inviting outside the peak summer months.
Swimming Conditions
Swimming is allowed and widely enjoyed in Lake Macquarie, particularly at designated swimming areas, waterfront reserves, and quiet bays where boat traffic is limited. The generally calm waters make it suitable for families, casual swimmers, and anyone keen on a relaxed dip rather than surf swimming. Water quality is regularly monitored, and while conditions are usually good, locals tend to check advisories after heavy rain due to runoff. Overall, Lake Macquarie offers reliable swimming conditions for a good part of the year, especially if you’re after sheltered, warmer water and an easygoing coastal lake experience rather than rough seas.