Taking the local weather in Sihui into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually July and August, with an average temperature of 28°C, while the coldest months are January and December, with an average of 16°C. The rainiest months in Sihui are June, May, August and July, with each month seeing an average of 338 mm of rainfall.