Thirlmere Lakes National Park Park

Protected park preserving ancient lakes and heathland

Thirlmere Lakes National Park in New South Wales protects three freshwater lakes amid eucalyptus forest; visitors hike boardwalks, birdwatch and picnic along leafy lake shores.

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Thirlmere Lakes National Park at a Glance#

Address: Thirlmere Lakes National Park, New South Wales, Australia

Website: https://www.nationalparks.nsw.gov.au/visit-a-park/parks/thirlmere-lakes-national-park

Hours: Open daily, 24 hours (parkland - check local NSW National Parks advisories for track closures)

Admission: Free (entry to the national park)

About Thirlmere Lakes National Park#

Thirlmere Lakes National Park protects a pair of freshwater lakes and the surrounding woodland near the town of Thirlmere in New South Wales, Australia. The park conserves lowland wetland and forest habitats atypical for the surrounding region.

The lakes are shallow freshwater bodies set within native eucalypt woodland and provide habitat for aquatic plants and animals of local conservation interest. The site is relatively compact and visited for short nature walks and birdwatching.

The area was designated as a national park to protect these distinctive lake ecosystems and their associated vegetation; specific management actions focus on preserving water quality and native habitats.

The park lies near the township of Thirlmere in Wollondilly Shire, inland from the Illawarra coast and within the greater Sydney-Newcastle region of New South Wales.

How to Get to Thirlmere Lakes National Park#

The park is about a 10-15 minute drive east of the town of Thirlmere in the Wollondilly Shire, roughly 80 km southwest of central Sydney. The main car park and picnic area are adjacent to the lakes off Lakes/Old Hume Highway; allow a short drive from the M31/Hume Motorway.

Tips for Visiting Thirlmere Lakes National Park#

  • Visit early morning for still water and the best light on the lakes; dragonflies and waterfowl are most active then.
  • The main walking tracks can be boggy after rain-wear boots and choose boardwalk routes.
  • Combine the visit with a drive along the Wollondilly River valley or a stop at nearby picnic areas; the park is small but secluded.

Best Time to Visit Thirlmere Lakes National Park#

Best in spring and autumn for comfortable walking and full lakes; always check local park alerts during fire season.

Spring
September-November · 10-22 °C
Wildflowers and good conditions for walking; lakes are usually full after winter and spring rains.
Summer
December-February · 18-30 °C
Warmer, but can be dry and bushfire risk increases-check park alerts.
Autumn-Winter
March-August · 5-18 °C
Crisp mornings and quieter tracks; the lakes may contract in drier years.

Weather & Climate near Thirlmere Lakes National Park#

Climate

Thirlmere Lakes National Park's climate is classified as Oceanic - Oceanic climate with warm summers (peaking in January) and cold winters (coldest in July). Temperatures range from 4°C to 26°C. Moderate rainfall (929 mm/year).

Air Quality: AQI 35 Good
Temperature & Rainfall
Temperature Range
26°
Warmest Month
4°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 15° - 26° 21° 98 mm - - 3.0 m/s - -
February - 16° - 25° 20° 122 mm - - 2.6 m/s - -
March - 14° - 24° 19° 95 mm - - 2.6 m/s - -
April - 11° - 21° 16° 85 mm - - 2.7 m/s - -
May - 8° - 18° 13° 65 mm - - 2.5 m/s - -
June - 6° - 15° 10° 66 mm - - 2.5 m/s - -
July - 4° - 14° 8° 40 mm - - 2.8 m/s - -
August - 5° - 16° 11° 59 mm - - 2.9 m/s - -
September - 7° - 18° 13° 49 mm - - 3.2 m/s - -
October - 10° - 21° 15° 76 mm - - 2.8 m/s - -
November - 12° - 23° 17° 95 mm - - 2.8 m/s - -
December - 14° - 25° 19° 79 mm - - 2.8 m/s - -