Dublin commuters are getting free bottles of water as the heatwave continue.
Irish Rail say 50,000 bottles will be distributed to customers at major stations over the coming days.
The company says hot weather protocols are also in place for its fleet and infrastructure maintenance.
This will focus on cooling systems on board trains, and on ensuring air-conditioning is operating well.
It's advised customers to stay hydrated when travelling during the hot weather.
The company is sharing a video with tips - including advice to always carry water.
Some track maintenance works are also being deferred, as unsettling the track bed can increase the risk of rail buckling in the heat.
