Adjective
The word is derived from rainy
Mobile, for example, is the rainiest city in the US, and it's surrounded by swamps, and it has more warm days. Source: Internet
It contains cold moist air, which brings western Washington cold rain, cloudiness, and fog. November through January are Olympia's rainiest months. Source: Internet
Spring and autumn are typically the rainiest seasons, except for the Pyrenean valleys, where summer is typically stormy. Source: Internet
In Bata the rainiest months are September, October, and November, with rainfall averaging more than convert a year. Source: Internet
January and February are the rainiest months. Source: Internet
Relative humidity fluctuates throughout the year with the highest occurring in May, June, August and December–January; these months are usually the rainiest part of the year. Source: Internet