Dubliners who drive are spending an average of eight days and 21 hours a year sitting in traffic.
That is according to the latest traffic index from TomTom - which covers 416 cities across 57 countries on six continents.
Now in its ninth year, it ranks urban congestion worldwide.
It found the capital to be the 17th most congested city in the world.
It said Dublin was 48% congested on average last year - an increase of 3% from 2018.
However TomTom data suggests travelling after 6.00pm on Thursdays could save up to six hours per year (for a 30 minute commute).
December 25th was the day with the least traffic last year - while October 25th had the most.
The highest level of traffic congestion for one day was seen in the Ukrainian capital Kiev, which saw 132% congestion on January 23rd this year.
The analysis also ranked Cork and Limerick cities in 75th and 118th positions respectively.
The worst city in the world for traffic is Bengaluru in India, followed by Manila in the Philippines and Bogota in Colombia.
The Indian cities of Mumbai and Pune round out the top five.
This means of the five worst-congested cities, Indian makes up three of them.
The least congested city was Abu Dhabi in the UAE - which saw an average of just 87 minutes in traffic.
Meanwhile the worst city in the world for traffic is Bengaluru in India, followed by Manila in the Philippines and Bogota in Colombia.
In terms of traffic at night - i.e. highest average congestion levels between midnight and 6.00am - the worst offender here is Bogota in Columbia.
This is followed by Mons in Belgium, Manila in the Philippines, Cairo in Egypt and Jeddah in Saudia Arabia.