Haldia has a typical moderate climate with winter temperatures ranging from a low of around 7 degrees Celsius to a high of 22 degrees Celsius. Winters are chilly and is when the residents hold the Haldia Utsav festival. Summers can be very hot and humid. Usual summer temperatures in May, the hottest month range from a low of 24 degrees to highs around 39 degrees. Rainfall is heavy during monsoons, and the rainy months are between May and September
