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Saturday | November 07, 2026 | Dhaka

BD may face 4-6 cold waves

 Staff Reporter
 Published: 12:08 AM, 07 November 2026

Bangladesh may experience four to six cold waves between November and January, with temperatures in some areas potentially falling to 4°C during one or two severe cold spells, according to the Bangladesh Meteorological Department (BMD).

In its latest three-month long-range forecast, the BMD predicted that two to three of the cold waves could turn severe, particularly in January.

One or two mild cold waves may occur in December, while moderate cold waves are likely in January, when one or two severe cold spells could bring temperatures down to 4-6°C.

BMD Meteorologist Dr Muhammad Abul Kalam Mallik told BSS that cold waves would be more pronounced in the northern and western parts of the country, particularly in areas of Rajshahi, Rangpur and Khulna divisions, where temperatures may fall to 8-10°C.

The BMD classifies temperatures of 8-10°C as mild cold waves, 6-8°C as moderate, 4-6°C as severe and below 4°C as extremely severe.

Warmer winter expected
Despite the possibility of severe cold spells, the BMD expects overall winter temperatures to remain relatively high.

Dr Mallik attributed the possibility of a warmer winter to prevailing El Niño conditions and rising global temperatures, whose effects are also being felt across South Asia.

“We expect a somewhat warmer winter this year,” he said, adding that the timing, frequency and duration of cold spells, particularly extremely severe ones, would likely remain limited.

Moderate to dense fog may develop over river basins from late night until morning during the forecast period. Other areas may experience light to moderate fog.

Dense fog could reduce the difference between daytime and nighttime temperatures, making the weather feel colder.

Cyclone possibility
The BMD also forecast that two to four low-pressure systems may develop over the Bay of Bengal between November and January, with one or two potentially intensifying into cyclones.

Dr Mallik said October and November were generally cyclone-prone months in Bangladesh, as low-pressure systems frequently develop over the Bay of Bengal during this period.

He explained that shorter days and longer nights, alongside increased solar radiation raising sea surface temperatures in the Bay, could create favourable conditions for such weather systems.

The forecast also predicted normal rainfall across the country during the November-January period.