The
spatio-temporal analysis of the performance of the March to May (MAM) 2020
rainfall and its societal implications to Northern Coastal Tanzania (NCT) including Zanzibar was investigated. The uniqueness of the October to
December, 2019 (OND) rainfall and the extension of the January to February,
2020 rainfall in Zanzibar which coincided with MAM 2020 rainfall was among the
issues which prolonged MAM 2020 rainfall in NCT and Zanzibar. The National
Center for Environmental Prediction (NCEP) in collaboration with National
Center for Atmospheric Research (NCAR). Reanalysis 1 datasets of u (zonal)and v (meridional)winds, sea surface temperatures anomalies, relative humidity, amount of precipitable
water and ocean net flux wereanalyzed. Other datasets include the Tanzania
Meteorological Authority (TMA) observed rainfall records, maximum and minimum temperatures. Moreover, TMA
and Intergovernmental Climate Prediction and Analysis Center (ICPAC). MAM 2020 rainfall and temperature forecast reports
were interpreted. Gridded and observed datasets were calculated into monthly
and seasonal averages. As for observed data, long-term monthly and MAM percentage changes were
calculated. Besides, the correlation between rainfall anomalies with an area-
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