The Ghazipur is situated in eastern part of Uattar Pradesh, hence the climate of Ghazipur is not very Hot or Cold. The coldest months here are December-January and the hottest months are May-June. The Temperature varies from 5° to 17° centigrade in winters and 30° to 42° in summers. But some times winter temperature ebbs to 3° C and summer temperature shoots up to 45° C. In the summers, which begin from March and last till Mid June the temperature starts rising and sometimes it reaches 45° C.speedy westerly winds known as “Loo” lash the district in day times , but night are pleasant and cozy. After scorching heat from mid or last of June a pleasant change in weather occurs. The south-west monsoon advances and covers the district around June-end and rainy season begins which goes till October. After the recession of south-west monsoon , the winters descend on the state from 15th October. It continues till the end of February. Though cod winds pierce through in the night , days remain bright and warm with clear blue sky during this period. Apart from few wintry downpours the weather remains dry and friendly.
The annual rainfall in the district was between 800 mm. and 1200 mm and in 1997 the rainfall was 1034 mm. On the average there are 49-55 rainy days ( days with rain fall of 2.5 mm or more ) in a year in the district.
There is no meteorological observatory in the district. but by help of observatory in Geography Department, P.G. College. the May-June are hottest month with mean daily max. temp. at about 41° C and mean daily minimum about 26° C. January is generally the coldest month with mean daily maximum temp. at about 23° C and mean daily minimum at about 9° C. According to Sankh Partika 1997, the Maxm. Temp. 42.7° C and minimum Temp. 2.0° C of District.
During July and September the relative humidity are high being over 70 %. During the Post-Mansoon and winter season the humidity is high in the morning . By summer , the relative humidity become very low i.e. less than 25 %.