Planning for the weather is a good way to make your trip to Alibaug relaxing and enjoyable, especially when you’re splurging. The hottest months are usually April and May, with an average temperature of 29°C, while the coldest months are January and December, with an average of 26°C. The rainiest months in Alibaug are July, August, June and September, with each month seeing an average of 604 mm of rainfall.