If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Sari Harjo: The hottest months are usually October and May with an average temp of 78°F, while the coldest months are August and July with an average of 76°F. The rainiest months in Sari Harjo are November, December, February, and January, with each month seeing an average of 16 inches of rainfall.