Taking into account the local weather in Tegal is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually October and September with an average temp of 82°F, while the coldest months are August and July with an average of 81°F. The rainiest months in Tegal are January, February, December, and March, with each month seeing an average of 19 inches of rainfall.