Erattupetta experiences a Tropical Monsoon climate (Köppen classification: Am), characterized by high humidity and heavy rainfall. The town receives two primary monsoon seasons: the South-West monsoon from June to August, which brings torrential rains, and the North-East monsoon in October and November.
Temperatures remain relatively consistent throughout the year, typically ranging from 23°C to 34°C (73°F to 93°F). The summer months of March to May can be quite hot and humid, though the town’s proximity to the hills provides slightly cooler evenings compared to the coastal plains. The best time to visit is from September to February, when the monsoon retreats, leaving the surrounding hills lush and the weather pleasantly cool.

