- Heavy rainfall and thunderstorms have been affecting almost 24 districts of Sri Lanka since 15 May, resulting in casualties and damage.
- The National Disaster Relief Services Centre (NDRSC) report, as of 29 May, ten fatalities, of whom four in Puttalam, two in Galle, two in Ratnapura, one in Batulla and one in Nuwara Eliya districts in western and southern Sri Lanka. Three people are still missing, 26 have been injured, and a total of 66,787 people have been affected by severe weather. In addition, 37 houses have been destroyed and 5,556 have been partially damaged.
- On 30-31 May, more heavy rainfall is expected over the southwestern and southern parts of Sri Lanka.