Warm nights surprise Bengaluru, but IMD says winter chill will return in a few weeks

Night temperatures rose sharply due to cloud cover and easterly winds, but weather officials say the change is temporary and colder days are still ahead.

Bengaluru witnessed a brief break from winter conditions on Saturday as night temperatures climbed sharply, rising from around 12°C recorded a few days ago to 17.4°C. The sudden warming led to concerns among residents that summer may be arriving earlier than expected.

However, scientists from the India Meteorological Department (IMD) have clarified that the rise in temperature is temporary and does not signal the end of winter. According to IMD, colder conditions are likely to return within the next two to three weeks, including in Bengaluru.

The temporary warming has been attributed to easterly winds blowing from the Bay of Bengal, which brought increased moisture and cloud cover over the region. These cloudy conditions reduced heat loss during the night, resulting in warmer minimum temperatures.

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Meteorological observations point to multiple weather systems influencing the region. An upper-air cyclonic circulation over the Bay of Bengal, a trough extending up to the Tamil Nadu coast, and another system affecting coastal Karnataka have together led to overcast skies, warmer nights, and largely dry weather in Bengaluru and parts of south interior Karnataka.

While Bengaluru experienced milder nights, central and northern districts of Karnataka continued to face sharp cold conditions and dense fog during late nights and early mornings. Meanwhile, Mysuru, Mandya, and Chamarajanagar reported isolated rainfall over the past two days.

IMD has maintained that winter conditions will persist until the end of January. Night temperatures in Bengaluru are expected to dip again after January 5 or 6, with cold-wave conditions first affecting north interior Karnataka before gradually extending southward, including the capital city. The cold spell is expected to ease only from the first week of February.

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