Met Éireann has warned of possible flooding as heavy showers are set to continue throughout the day.
Donegal is currently under a yellow rain warning which will remain in place until 9pm on Friday.
Meanwhile people are being asked to avoid soft and boggy grounds when hillwalking following the heavy rainfall.
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Mountaineering Ireland is calling for people to be mindful as it says the downpours have left their mark on many upland areas.
Helen Lawless, Access and Conservation Officer with the organisation, said: “We’ve had a lot of rain over the last while, so the hills are really wet, especially the peatland areas and when the hills are wet they are more vulnerable to the impact of our footfall.”