The climate of Visakhapatnam has no appreciable seasonal changes. Being close to the sea, the level of humidity is high. The fluctuations in temperature are fairly uniform in character, except during the dry months when the rise in temperature is higher than it is during the monsoon period. From February onwards, the temperature rises progressively till May, which is the hottest month. From 1931-60 the maximum average (Mean) temperature was 34 °C. This has been showing an upward trend with the minimum and maximum for the period of 1975-81 being reported as 38 °C and 29 °C, respectively. In recent years, it has not been uncommon for the daytime temperature to exceed 43 °C during May. December, January are the coldest period of the year.
The average annual rainfall for the city and its surrounding area is of the order of 95 centimeters with the bulk of the rain coming from north-east monsoon. Between September and November, storms and depressions originating in the Bay of Bengal cross the east coast in the neighbourhood causing heavy rains and gales. As per Thornthwaite’s classification, Visakhapatnam and its environs come under the semi–arid (D) category. All the elements of climate viz. temperature, pressure, wind, rainfall, relative humidity and other weather phenomena hardly exist and exhibit a well marked variation while January is the coolest month of the year with average temperatures of 30 °C and 22.5 °C respectively. The present airport is getting flooded frequently due to severe rains.This is due to the location of the airport. it was made for small operations, surrounded by marshy lands, the river flood water discharging into sea. The present government has taken steps to modernize the airport with night landing facilities. in this process, the area has been strengthened with flood relieving canal and raising the runway .