Weather will likely play an important role when you plan your trip to Tegal, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and September, with an average temperature of 28°C, while the coldest months are August and July, with an average of 27°C. The rainiest months in Tegal are January, February, December and March, with each month seeing an average of 486 mm of rainfall.