If you're looking for summer vibes, the best time to travel to Inishmore is in June, July and August, when the average temperature reaches 17 °C, while May, June and April are the 3 sunniest months of the year, with an average of 51.98 hours.
However, if you prefer colder temperatures, make sure you visit Inishmore during January, February or March to experience an average of -0.52 °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 September, January and February, when the average precipitation in Inishmore is 5.08 mm, while the months of January, February and March are drier, with an average of 0 mm.