If you're looking for summer vibes, the best time to travel to Penzance is in June, July and August, when the average temperature reaches 16.86 °C, while June, July and April are the 3 sunniest months of the year, with an average of 38.35 hours.
However, if you prefer colder temperatures, make sure you visit Penzance during January, February or March to experience an average of 4.56 °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, March and April, when the average precipitation in Penzance is 3.75 mm, while the months of January, February and March are drier, with an average of 0 mm.