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 Bekasi: The hottest months are usually October and September, with an average temperature of 28°C, while the coldest months are July and August, with an average of 27°C. The rainiest months in Bekasi are February, March, January and December, with each month seeing an average of 351 mm of rainfall.