Key climatic parameters in Rivers State, Nigeria, such as temperature, atmospheric vapour and rainfall spanning a period of 30 years (1988-2018), were collected at the Nigerian Meteorological Agency (NIMET). The data was statistically analysed with the aim of determining the impact of changing climatic parameters on the recently observed flooding events in many of the communities. Results show that there has been a gradual increase in the amount of rainfall with increasing temperature and decreasing atmospheric pressure within the period of study (1988-2018). The studies noted that flooding of many communities in Rivers State and the destruction of their livelihood such as farm lands and markets may have resulted from the increasingly deteriorating climatic parameters over the period of study.