Kerala's climate reaches equatorial conditions. Maximum temperatures rarely exceed 90°F (32°C); minimum rarely falls below 70°F (21°C).

The annual range at Cochin is only 6°F (3.3°C) and the diurnal is about 10°F (5.6°C).

Apart from the heavy rainfalls in the hills, rainfall decreases from around 120 inches (3,008 mm.) in the north to half that at Trivandrum. There is an even distribution of rain throughout the year in Trivandrum: 39% in June - August, 33% in September - November, and 28% in December -May which is dry season in most of India. Not all parts of Kerala are as fortunate as Trivandrum in the moderation of rainfall and humidity rates.