Taking the local weather in Lyssons 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 September and August, with an average temperature of 28°C, while the coldest months are March and February, with an average of 25°C. The rainiest months in Lyssons are October, June, May and August, with each month seeing an average of 199 mm of rainfall.