Planning for the weather is a good way to make your trip to Lawngtlai relaxing and enjoyable, especially when you're splurging. The hottest months are usually April and May, with an average temperature of 24°C, while the coldest months are January and December, with an average of 18°C. The rainiest months in Lawngtlai are June, July, August and September, with each month seeing an average of 375 mm of rainfall.