If you're looking for summer vibes, the best time to travel to Shannon is in June, July and August, when the average temperature reaches 18.23 °C, while June, April and March are the 3 sunniest months of the year, with an average of 25.66 hours.
However, if you prefer colder temperatures, make sure you visit Shannon during January, February or March to experience an average of 1.64 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during January, February and March, when the average precipitation in Shannon is 4.5 mm, while the months of January, February and March are drier, with an average of 0 mm.