Extreme temperatures in Perth have left thousands without internet after the city reached 44.4 degrees, its hottest January day in 24 years.

iiNet customers were forced offline for more than six hours on Monday after the company shut down its Perth data centre because of the record-breaking heat.

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Customers as far as Geelong in Victoria and Grose Vale in New South Wales were affected by the precautionary measure to shut down servers in Perth at around 4pm.

“Due to record breaking temperatures, iiNet Toolbox, Email and our corporate websites are unavailable. Apologies for any inconvenience caused,” iiNet tweeted.

Monday was Perth’s sixth hottest day on record, reaching 44.4C just before 2pm.

iiNet users took to Twitter to express their frustration, saying the heat was no excuse and the company should have back up measures like air conditioning.

The company announced on Twitter at 11pm the heat impact had been resolved and all services were running again.

My ISP @iiNet is down because it’s too hot (44C) at their servers. That’s the most Australian thing I’ve heard. Too hot for Internet.

— Lisy K (@lisyk) January 5, 2015

.@iinet you poor loves *sad face* have you thought about tipping cold water over your servers & routers? 😛 Making a little paddling pool?

— Laurel Papworth (@SilkCharm) January 5, 2015

So @iiNet is still down. Almost 5 hours later. No PPPoE authentication. This is getting out of hand now. — Matty Randall (@mattRan) January 5, 2015 

Need a few of these in ha DC I think @iinet.. Ah feel that cool 20 degree breeze pic.twitter.com/uNZzC3P5T6 — PnKllr (@PnKllr) January 5, 2015

.@iiNet We can’t get internet. Glad you’re communicating reasons, but not sure “it’s hot” is really an acceptable excuse in Australia.

— Jonathan Sala (@tamasys) January 5, 2015

.@iiNet How about have some backup air cons as an organisation strategy?

— TWEETER VETERAN ZZAP (@zzap) January 5, 2015