KATHMANDU, June 19 : This year’s monsoon system has entered Nepal a week later than usual date, with the onset beginning from Koshi Province, according to the Meteorological Forecasting Division under the Department of Hydrology and Meteorology (DHM).
The DHM, through a monsoon onset bulletin issued on Thursday, stated that monsoon winds originating from the Bay of Bengal entered Nepal through the eastern region. The effects of the monsoon are currently being observed mainly in some parts of Koshi Province.
Meteorologists say that although the monsoon remains weak at present, it is likely to gradually expand to other parts of the country in the coming days. With the monsoon becoming active, rainfall is expected to increase in eastern Nepal, with its influence gradually spreading nationwide.
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The DHM said it is continuously monitoring the monsoon system and will regularly issue updated weather information. It has also urged the public to remain alert as the onset of the rainy season increases the risk of floods, landslides and inundation.
The monsoon generally enters Nepal around mid-June, and its influence usually continues until September.
This year, scientists have predicted less than average rainfall but have warned that the intensity of rainfall might be more harmful.
The HKH Monsoon Outlook 2026, issued recently by ICIMOD, warns that disaster risks remain high despite weaker rainfall projections.
Scientists caution that short bursts of intense rainfall, rising temperatures, and increasing water stress could make the season more hazardous.
According to the outlook, erratic rainfall combined with rising temperatures is expected to heighten both drought and flood risks. Long dry spells may be followed by sudden heavy downpours, creating conditions for flash floods and landslides, particularly in mountain areas. Warmer conditions are also likely to intensify heat stress and reduce water availability.
