Characterization of Historical Seasonal and Annual Rainfall and Temperature Trends in Selected Climatological Homogenous Rainfall Zones of Uganda

There is general lack of scientific consensus on the trend and distribution of annual and
seasonal rainfall and temperature in Uganda. This study used both observational and AgMerra
rainfall and temperature data for the period 1980-2010 to characterize the trend and variability in
seasonal and annual rainfall, maximum and minimum temperatures across 12 different rainfall
homogenous zones (K, H, ME, L, J, F, MW, D, E, A1, A2, and I) of Uganda. Trends analysis was
done using regression method, while coefficient of variation and ANOVA techniques were used
to analyze variability. The results show statistically significant increasing trends (P ? 0.05) in
annual rainfall amount in zone A1 and a declining trend for zone K (P<0.05).