WINTER has arrived with gusto.
Heavy rain is set to blight the country for most of the week as our unusually mild October eventually succumbs to the harsher elements.
Gusts of wind of more than 100kph forced the cancellation of flights and ferry crossings and forecasters are warning that the rest of the week will bring further unsettled weather.
"The weather front yesterday has brought a big change temperature wise. It brought unsettled weather and we will see over the coming week large fluctuations, with heavy rain at times, windy showers some other times," Met Eireann forecaster Pat Clarke told the Herald.
"Overall it will be more typical October weather. Yesterday, we had very heavy, torrential rain. In some places, two weeks of rain fell in just one day, and there were very strong winds as well with gusts that reached in excess of 100kph."
Fourteen flights had to be diverted to other airports across Ireland because of severe crosswinds yesterday. Another eight flights that were due to arrive in Dublin Airport were cancelled.
The disruption occurred in the afternoon, between 2.30pm and 4.30pm, a spokeswoman for the Dublin Airport Authority confirmed.
Several Irish ferries between Dublin and Holyhead were also cancelled.
In the capital, four cars parked in the Leinster House car park were damaged after slates were blown off from the roof of the National History Museum.
Nobody was hurt during the incident.
Met Eireann said that while they expected changeable conditions, snow was not expected.
Mr Clarke said: "The gusts marked the change from the exceptionally mild weather that we had at the start of October, with temperatures 2C to 4C higher than normal, to much cooler weather. We expect to see hail and some spot flooding.
"We will have some ground frost locally tonight and on Wednesday with single digit temperatures but as we get to Thursday and Friday, temperatures will be low, but not low enough for snow.
The AA has advised motorists to take extra care on the roads as visibility will be reduced.