weather in bermuda september
There is no monsoon or rainy season because Bermuda is not in the Caribbean, but some months tend to be wetter than others. But others can be devoid of much rain. Also, several - like late June, July and August in particular and early September - can be extremely (and unpleasantly) humid. If this affects you badly, and you don't mind cooler water for swimming, then try May or June or late September to October. For weather forecasts, check the Bermuda Weather Service page.