A tropical monsoon climate prevails over the drainage basin area of the lake. The lake experiences South–west and North-east monsoons during June to September and November to December respectively with an average annual rainfall of , with 72 rainy days. The maximum temperature of and minimum temperature of have been recorded. The wind speed varies from /hour with southerly and southwesterly direction due to the influence of the Southwest monsoon and from the north and northeasterly direction during the rest of the months.