Planning for the weather is an important factor for making your trip to Pulau Weh a success, especially when you're splurging. The hottest months are usually May and June, with an average temperature of 28°C, while the coldest months are January and November, with an average of 27°C. The rainiest months in Pulau Weh are November, December, October and May, with each month seeing an average of 344 mm of rainfall.