Marmong Picnic Area – water temperature at Lake Macquarie
This page provides up-to-date information about the water temperature at Marmong Picnic Area, located on the Lake Macquarie in New South Wales. Here you can check current conditions, view recent temperature trends, explore typical monthly ranges, and compare today’s reading with historical averages for this date. The page also includes a 7-day water temperature forecast, local weather information, and swimming conditions.
Current Water Temperature
The water temperature in Lake Macquarie at Marmong Picnic Area today is 24°C.
Water Temperature in Lake Macquarie at Marmong Picnic Area: 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
Water temperatures in Marmong Picnic Area 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 Marmong Picnic Area will be 23.5°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 | 26.9°C | 23.5°C | |
| Mar 13 | 26.8°C | 23.5°C | |
| Mar 14 | 24.1°C | 23.5°C | |
| Mar 15 | 23.8°C | 23.5°C | |
| Mar 16 | 23.7°C | 23.5°C | |
| Mar 17 | 23.7°C | 23.5°C | |
| Mar 18 | 25.9°C | 23.5°C | |
| Mar 19 | 26.1°C | 23.5°C | |
| Mar 20 | 23.5°C | 23.5°C | 23.5°C |
| Mar 21 | 23.5°C | 23.5°C | |
| Mar 22 | 23.5°C | 23.5°C | |
| Mar 23 | 23.5°C | 23.5°C | |
| Mar 24 | 23.5°C | 23.5°C | |
| Mar 25 | 23.5°C | 23.5°C | |
| Mar 26 | 23.5°C | 23.5°C | |
| Mar 27 | 23.5°C | 23.5°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 |
Location & Local Information
Marmong Picnic Area sits on the western edge of Lake Macquarie, where water temperatures are strongly influenced by the lake’s broad, shallow layout. Over summer, from December through to February, the water here is usually in the range of about 22–25 °C, making it feel pleasantly warm for a dip. In autumn, temperatures ease back to around 18–21 °C, while winter is noticeably cooler, often sitting between 13 and 16 °C. As spring arrives, the lake gradually warms again, commonly reaching 18–21 °C by late October, depending on sunshine and wind conditions.
Swimming Conditions
Swimming at Marmong Picnic Area is allowed and fairly popular during the warmer months, particularly on calm days. The shoreline here is generally gentle, with quiet water and very little current, which makes it suitable for relaxed swimming rather than anything energetic. It’s not a formal swimming enclosure, so conditions can vary with wind and boat activity, and the water can feel cooler just off the edge in deeper sections. Water quality is usually fine for recreation, though occasional algae alerts can occur in hot, still periods. Overall, Marmong is best suited to casual summer swimming combined with picnicking, rather than being a dedicated swimming spot year-round.