TEMPERATURE
The temperature record from 16 stations for the period
1931-1979 are depicted in the map. The temperature reaches maximum (> 32°C)
during March-May. From June onwards, it
gradually comes down due to heavy monsoon. Again, an increasing trend is
noticed in October and November followedby lower temperatures« 27°C) -in the
months of December and January. The seasonal and diurnal variations of
temperature are not unifonn throughout the State. The stations located near the
coast are influenced by land and sea breezes and here the seasonal and diurnal
variations of temperature are almost of the same range (5°C - 7°C). At Palghat,
the mean seasonal variation is less than the diurnal variation. But in the
highranges, which are typically sub-troPical, the diurnal variation is very
high (> 15°C in some months).