Abstract:
This paper investigates rainfall and temperature trends at Namulonge parish, in Wakiso district of Uganda using
statistical techniques. Daily-observed temperature and rainfall records were aggregated into monthly means over
a period of more than 55 years. These records were analyzed in an effort to identify both seasonal trends and
shifts in climate. This was achieved by using non- parametric (Mann-Kendall) and parametric (linear regression)
techniques. The analysis shows that total rainfall during the March-May season decreased, while maximum
temperatures were increasing during the months between April and September, with both trends statistically
significant at 5% confidence level. The Mann-Kendall test revealed that the number of wet days reduced
significantly. Temperatures were found to be warmer and rainfall higher in the first climate normal compared to
the recent 30 years. Results revealed that April was the only month with a statistically significant rainfall trend.
