Planning for the weather is an important factor for making your trip to Serdang a success, especially when you're splurging. The hottest months are usually March and February, with an average temperature of 27°C, while the coldest months are January and February, with an average of 26°C. The rainiest months in Serdang are November, December, April and October, with each month seeing an average of 339 mm of rainfall.