Sydney suburbs will experience temperatures over 40C on Australia Day.

Forecasters are predicting a second heatwave for January, with western Sydney to cop it most.

Penrith will hit 43C on Australia Day with temps across western Sydney suburbs similar to that.

Weather for Western Sydney:

Australia Day Long Weekend Sydney’s west.

Friday 39C

Saturday 41C

Sunday 43C

Records Fall

Temperature records are being smashed across Australia.

NSW had its hottest minimum temperature for January recorded at several towns.

Meanwhile people are being warned about the dangers of heat and encouraging parents to be careful their children are hydrated and to care for the elderly.

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