Kerala has tropical Climate and remains pleasant for most of the year. A few fast facts about the climate are that Kerala does not have a dry spell as is in rest of India. It is summer time from April to June. The maximum temperature remains around 33 degrees centigrade. The South West Monsoon touches the state in June and remains till September however not much difference in temperature can be felt, though humidity increases and rainfall can last for a couple of days at a stretch. Winter is from October to January and temperature drops a bit.

TEMPARATURE:
Even at the height of the monsoons, the temperature rarely dips below a pleasant 18 degrees c. It has a warm and pleasant tropical monsoon climate with seasonally excessive rainfall. 

The climate is pleasant from September to February, which is also the peak tourist season. The summer months are warm and humid with a mean max temperature of about 33 degree c. 
Temperature
Winter Max: 21?C ; Min: 18?C 
Summer Max: 33?C ; Min: 27?C

RAINFALL:

Kerala is blessed with plentiful rain, 54% to 85% of which is contributed by the monsoons. Monsoons bring to Kerala two rainy seasons-the southwest monsoon or the Edavappathi, bringing rains during June-September, and the north east monsoon or the Thulavarsham during October to December. 

Kerala is directly exposed to the southwest monsoon but also receives rain from the reverse (northeast) monsoon. Rainfall averages about 118 inches (3,000 millimeters) annually statewide, with some slopes receiving more than 200 inches. 

The north east monsoon season begins from the middle of October and lasts upto the end of February, though the rain associated with it ceases by December. The total annual rainfall in the state varies from 380 cms over the extreme northern parts to about 180 cms to the south. 

The amount of rainfall decreases towards the south almost in proportion with the decrease in altitude of the Western Ghats. July receives the maximum rainfall with all meteorological centres recording about 25 rainy days.

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