| Summary: | This paper presents an analysis of the annual cumulative rainfall pattern and probability of extreme rainfall events in Cameron Highlands, Malaysia. The study was conducted using 30 years of rainfall data from three data stations. The results show that the annual cumulative rainfall pattern of each station is consistent, with the lowest recorded in 1979 and the maximum recorded in 1994 or 1999. Two monsoon seasons exist in Malaysia, and Cameron Highlands is not affected by the North-East Monsoon. The study also analyzed the probability of extreme rainfall events occurring over different time periods using the Weibull distribution and average recurrence interval (ARI). The results can be useful for the design of drainage systems in Malaysia, particularly for major drainage systems that are designed to withstand storms with ARI of 50 to 100 years. This paper provides valuable information for hydrological design, enabling engineers and planners to make informed decisions about the design of drainage systems, taking into consideration the probability of extreme rainfall events occurring over different time periods. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
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