Can you explain how this works exactly. The rainy season begins every year around September 12 and ends in mid-May The rainy season lasts "9 months"....sorry but that's the longest shower I've ever heard. a short dry season from January to February. a short rainy season from March to April. a long dry season from May to September. a long rainy season from October to December. The best time to go on a Congo holiday: weather climate. By Expert ... https://www.expertafrica.com/congo/info/congo-weather-and-climate How many months is it now.....NOT 9