Planning for the weather is a good way to make your trip to Rathgama relaxing and enjoyable, especially when you’re splurging. The hottest months are usually March and April, with an average temperature of 27°C, while the coldest months are January and February, with an average of 27°C. The rainiest months in Rathgama are May, November, September and October, with each month seeing an average of 331 mm of rainfall.