Rainfall
Seasonal Rainfall Outlook: March-May 2025 (MAM)
Issued: 3 Mar 2025
For MAM 2025, above-normal rainfall is predicted over much of Mainland Southeast Asia and the eastern Maritime Continent.
Figure 1: Rainfall tercile summary predictions of NCEP model for MAM 2025 (contains modified Copernicus C3S information).
Figure 2: Rainfall tercile summary predictions of ECMWF model for MAM 2025 (contains modified Copernicus C3S information).
Figure 3: Rainfall tercile summary predictions of UK Met Office model for MAM 2025 (contains modified Copernicus C3S information).
Figure 4: Rainfall tercile summary predictions of the multi-model ensemble for MAM 2025 (contains modified Copernicus C3S information).
Figure 5: Average climatological rainfall's lower tercile boundary for MAM based on CHIRPS (Reference period: 1991-2020).
Figure 6: Average climatological rainfall's upper tercile boundary for MAM based on CHIRPS (Reference period: 1991-2020).
The qualitative outlook is assessed for the region in general. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.