Bengaluru Weather Forecast Shows Intense Heat Followed by Monday Thunderstorms

Bengaluru is set for one of its hottest days of the season on Sunday, 3 May, with maximum temperatures near 36–37°C under hazy sunshine and light winds. Forecast models signal a shift from late Monday, 4 May, when instability and moisture return, raising the chance of afternoon and evening thunderstorms over several parts of the city.

For residents, this means a two-stage weather story: oppressive daytime heat today, followed by potential relief but storm-related disruption from Monday. Meteorologists tracking regional models note rising convective energy over south interior Karnataka from 4–6 May, a pattern typical before pre-monsoon thunderstorms. That setup often brings sharp, short-lived downpours, lightning and gusty winds that cool the surface but strain urban infrastructure.

Heat peaks in Bengaluru today before pattern starts to change

Observations through Sunday afternoon show Bengaluru under strong solar heating, with temperatures climbing well above the seasonal average and humidity staying moderate. The absence of organised cloud cover has allowed the land surface to warm rapidly, especially over paved stretches like Outer Ring Road, Whitefield and Electronic City. Such conditions usually prime the lower atmosphere, storing heat that later fuels thunderclouds when moisture and lift increase.

Numerical guidance for Sunday night and early Monday keeps the city mostly dry, suggesting no widespread overnight storms. However, forecasters highlight a gradual increase in low-level moisture from the Arabian Sea and local evapotranspiration by Monday afternoon. That moisture, when combined with lingering heat from today, raises the likelihood of towering cumulus clouds developing first on the city’s outskirts before some grow into thunderstorms.

Thunderstorm chances rise from Monday afternoon

From Monday, 4 May, high-resolution weather models show patchy but meaningful thunderstorm chances for Bengaluru during the afternoon and evening window. Activity is likely to be scattered rather than citywide, meaning some neighbourhoods may receive heavy rain while others stay mostly dry. Still, even isolated cells can produce intense rainfall rates over short periods, enough to trigger localised waterlogging on arterial roads.

Forecasters point to increasing convective available potential energy over south interior Karnataka as a key signal for storm development. As the sun heats the ground through midday Monday, this unstable air can rise quickly, condensing into cumulonimbus clouds. These pre-monsoon storms tend to be short in duration but can be fierce, bringing sudden gusts, frequent lightning and sharp temperature drops of several degrees within an hour.

Date	Expected Daytime High	Rain / Thunderstorm Signal
Sunday, 3 May	36–37°C	Very low; mainly hazy sun
Monday, 4 May	34–36°C	Scattered afternoon/evening thunderstorms possible
Tuesday, 5 May	33–35°C	Clouds, isolated showers or a brief storm

Relief from heat, but risks for traffic and power

For Bengalureans, the likely trade-off from Monday is clear: lower late-evening temperatures but higher disruption risk. Storm outflows can topple weak trees, affect overhead power lines and cause slowdowns near tech corridors and key junctions. Short bursts of intense rain may overwhelm stormwater drains, particularly in low-lying pockets that have seen repeat flooding in recent pre-monsoon seasons.

Commuters are advised to factor in possible delays during the late-afternoon to early-night window on workdays. Office-goers along the Outer Ring Road, Whitefield, Sarjapur Road and north Bengaluru’s startup belts may face sudden downpours or gusty winds around the typical commute peak. Weather officials also caution against taking shelter under isolated trees during lightning, urging people to move indoors or into closed vehicles when thunder is audible.

With the pattern still evolving, officials and private forecasters are expected to refine timing and intensity estimates through Monday. Residents can monitor real-time radar, city-specific alerts and lightning-tracker dashboards to plan commutes and outdoor activities. The emerging signal suggests that while Sunday’s heat will be uncomfortable, the storms from Monday onward could offer welcome relief—provided the city and its people prepare for the associated hazards.