Mean daily temperature ranges from 24 Degrees C to 33 Degrees C except during the winter period when the minimum temperature may fall to about 19 Degrees. The hotter months are March, April, May and June. N mist sometimes develops during sunrise but disperses thereafter. At Bombay from November to March smog hangs over the land, obscuring everything in view. This happens only for short periods most often shortly after sunrise but also occasionally in the evenings.
Visibility is generally good for most part of the year.
The climate of the region has a regular seasonal variation determined by the occurence of two annual monsoons. The South-West monsoon period extends from June to September. Most of the annual rainfall occurs during the South-West monsoon, the average monthly rainfall being about 45 cm. Rain during the North-East monsoon is slight. The average annual rainfall over 20 years is 193 cm.