Background: Eclampsia is a complication of pregnancy induced hypertension and one of the leading contributor of maternal mortality and morbidity. It is more prevalent in developing countries. Literature suggests seasonal variation of incidence of eclampsia, being in winter and in monsoon in this part of this country. This study was conducted to assess the variation of mortality rate due to eclampsia during various seasons and to know the causes if any for higher mortality due to eclampsia in a particular season. Method: This study is a retrospective cohort study, spanning 3 years, from July 2011 to May 2014, in a tertiary centre in eastern India using hospital database and weather parameters available in print and electronic media. Result: Total deaths due to eclampsia was 26 in this study period. Highest fatality rate occurred in monsoon (July to October), followed by summer and then in winter (November to February), 11, 8 and 7 respectively. Conclusion: There is variation in mortality rate due to eclampsia in various seasons. Larger studies are needed to validate this finding.