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

14.7°C

Today

14.8°C

Yesterday

15.9°C

A Week Ago

The water temperature in Lake Macquarie today is 15°C.

Water Temperature in Lake Macquarie: Daily Trends, Historical Records, and Forecast

⚠️ Lake temperatures between 10 and 15°C are cold but can be manageable for short swims on sunny, warm days. Shallow areas may feel slightly warmer, while deeper sections remain cold and slow to warm up. Most swimmers keep sessions brief, and wetsuits are often used for comfort. Wind and cooler air temperatures can quickly reduce how pleasant the swim feels.

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 13.8°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
Jun 13	15.8°C	13.8°C
Jun 14	15.8°C	13.8°C
Jun 15	15.9°C	13.8°C
Jun 16	15.9°C	13.8°C
Jun 17	16.0°C	13.8°C
Jun 18	15.9°C	13.8°C
Jun 19	15.8°C	13.8°C
Jun 20	14.8°C	13.8°C
Jun 21	14.7°C	13.8°C	14.7°C
Jun 22		13.8°C	14.6°C
Jun 23		13.8°C	14.5°C
Jun 24		13.8°C	14.3°C
Jun 25		13.8°C	14.2°C
Jun 26		13.8°C	14.1°C
Jun 27		13.8°C	14.0°C
Jun 28		13.8°C	13.8°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

New South Wales

15.5°C

Swansea Bay Beach

New South Wales

15.7°C

Raffertys Beach

New South Wales

15.5°C

Sandy Beach Reserve

New South Wales

15.5°C

🔗 Brightwaters Baths

New South Wales

14.7°C

Sunshine Baths Reserve

New South Wales

15.5°C

Pearl Beach

New South Wales

15.7°C

Pebbly Beach

New South Wales

15.5°C

🔗 Wangi Wangi

New South Wales

14.7°C

Kilaben Bay

New South Wales

15.4°C

Zen's Beach

New South Wales

15.0°C

🔗 Marmong Picnic Area

New South Wales

14.9°C

🔗 Belmont Baths

New South Wales

14.8°C

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.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Macquarie?

The water temperature in Lake Macquarie today is 15°C.

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

In summer, water temperatures in Lake Macquarie typically range from 18°C to 28°C.

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

Yes — swimming in Lake Macquarie is common; summertime water temperatures often reach the low to mid 20s °C, while in winter they can drop to the low to mid teens, so it can feel quite chilly outside the warmer months. Always check Lake Macquarie City Council or local surf‑life‑saving updates for water‑quality and safety alerts, swim in patrolled or sheltered spots, and be mindful of boat traffic, currents and marine stingers in the warmer season.