If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Tuban: The hottest months are usually March and April, with an average temperature of 27°C, while the coldest months are August and September, with an average of 26°C. The rainiest months in Tuban are December, January, November and February, with each month seeing an average of 264 mm of rainfall.