More showers for Bengaluru as IMD sounds orange alert for heavy rain till May 27
The showers are being attributed to the advancement of the southwest monsoon, expected to arrive over Kerala over the next three to four days.

Amid the India Meteorological Department’s (IMD) forecast of early monsoon onset, the current heavy spell of rain is expected to continue in Karnataka, with an orange alert issued for parts of south interior Karnataka, which includes Bengaluru, and coastal Karnataka till May 27, except for May 22, for which a yellow alert was issued.
The spell of heavy rainfall is likely to cause flooding in parts of Karnataka. The showers are being attributed to the advancement of the southwest monsoon, which is expected to arrive over Kerala over the next three to four days, according to the IMD.
For Bengaluru, while the long-term rainfall average for the pre-monsoon period of January-May is 156.2 mm, in the 20 days of May alone, the city received 220 mm of rainfall–268 per cent above normal, according to the Karnataka State Natural Disaster Monitoring Centre (KSNDMC).
KSNDMC data also shows that the spell of pre-monsoon showers was the second highest since 1971. From January 1 to May 20, the state received 152 mm of rainfall, 75 per cent over the normal of 87 mm. The state’s highest pre-monsoon showers were recorded in 2022, when it received 105 mm of rainfall, more than double the normal.
The IMD has said in its forecast that “fairly widespread to widespread light/moderate rainfall accompanied by thunderstorms, lightning and gusty winds reaching 40-50 kmph with isolated heavy to very heavy rainfall,” is likely over coastal and south interior Karnataka from May 21 to 27.
Owing to a cyclonic circulation over the Arabian Sea, the Karnataka coast received very heavy rainfall on Tuesday–around 290 mm in Udupi and 190 mm on the outskirts of Mangaluru.
Though the IMD had issued a red alert for Wednesday for entire Karnataka, it was revised to an orange alert in the latest weather forecast bulletin.