Planning for the weather is a good way to make your trip to Mangaluru relaxing and enjoyable, especially when you’re splurging. The hottest months are usually April and March, with an average temperature of 29°C, while the coldest months are January and December, with an average of 27°C. The rainiest months in Mangaluru are July, June, August and September, with each month seeing an average of 727 mm of rainfall.