Pre-Monsoon Activity To Continue: More Showers Likely In Bengaluru
Representational Image: AI-Skymet
Key Takeaways:
- Bengaluru and nearby suburbs received uneven pre-monsoon rainfall.
- GKVK recorded the highest rainfall at 43.8 mm.
- More evening and night showers are likely till May 21.
- Rain activity may weaken temporarily between May 22 and May 26.
Bengaluru and its suburbs received a decent spell of thundershowers last evening. As is typical during the pre-monsoon season, rainfall distribution remained uneven across the region. While the city observatory recorded 26 mm rainfall, the International Airport at Devanahalli registered only 9 mm. Another observatory at GKVK Bengaluru, located on the outskirts, measured 43.8 mm rainfall. However, the city and adjoining areas are likely to receive more showers over the next three days, between May 19 and May 21, 2026.
The weather system over the Bay of Bengal has already moved far away from the East Coast. Meanwhile, the seasonal north-south trough across Peninsular India has become active once again. The trough extends from Chhattisgarh to Tamil Nadu via Vidarbha, Telangana, Karnataka and Rayalaseema. This trough is expected to oscillate and shift slightly eastward over the next two days. Scattered intermittent showers are likely today, mainly during the late evening and night hours.
Pre-monsoon rainfall has remained inadequate so far over Bengaluru. The city observatory has recorded 58 mm rainfall, while the HAL observatory measured only 9.2 mm between May 1 and May 19, against the monthly normal of 110.4 mm. Pre-monsoon activity is likely to remain subdued between May 22 and May 26, with only isolated and sparse showers expected. Rain activity is expected to pick up once again on and after May 27, 2026.
