Planning for the weather is an important factor for making your trip to Karaikudi a success, especially when you’re splurging. The hottest months are usually May and April, with an average temperature of 31°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Karaikudi are November, October, December and September, with each month seeing an average of 188 mm of rainfall.