Taking the local weather in Santa Tereza do Oeste 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 December and January, with an average temperature of 23°C, while the coldest months are July and June, with an average of 16°C. The rainiest months in Santa Tereza do Oeste are October, December, January and February, with each month seeing an average of 223 mm of rainfall.