The year is divided into three seasons. From February to May it is hot.
The south-west monsoon begins in June and continues till the full
moon in October or November. In this season, there is fairly good rainfall
without intermission. It is followed by fair weather during December -
January. Some times in March or April there may be thunder storms with
rains, but this may not last long. Then the weather become very sultry.
In the mountain ranges, there is heavy fog from April. Kerala has a moderate
and balanced climate throughout the year.