The Bangladesh Meteorological Department has warned of multiple cold waves sweeping across the country throughout January 2026. According to its long-term forecast, two to three mild to moderate cold waves and one to two moderate to severe cold waves may occur, with temperatures in some areas expected to fall as low as 4 to 6 degrees Celsius. Northern regions and river basin areas are likely to experience the most intense cold.

The forecast, issued after a meeting of the department’s expert committee, also predicts moderate to dense fog from midnight to morning, sometimes lasting until noon. This fog is expected to reduce the difference between day and night temperatures, intensifying the overall cold sensation. Despite normal rainfall being expected for the month, no cyclones or low-pressure systems are anticipated over the Bay of Bengal.

In December, rainfall across the country was 99.3 percent below normal, and the lowest temperature recorded was 7.5 degrees Celsius in Gopalganj on December 31. The department cautioned that cold wave days could disrupt normal life even if average temperatures remain typical for the season.