Ann: Access to Japan-Korea Battery Market with Sojitz Corporation, page-111

Probably not a good idea to guess. I'll provide a link even if you didn't.
Lends a bit more credibility than something you've slapped together.

http://en.climate-data.org/location/422685/

The climate is tropical in Kilombero. During most months of the year, there is significant rainfall in Kilombero. There is only a short dry season. This location is classified as Am by Köppen and Geiger. In Kilombero, the average annual temperature is 27.3 °C. The average annual rainfall is 1780 mm.
The driest month is September. There is 53 mm of precipitation in September. Most precipitation falls in April, with an average of 433 mm.