Key Takeaways:
- Heavy rainfall likely at one or two places in the hilly areas of Koshi, Bagmati and Gandaki provinces
- Moderate rain or snowfall with thunderstorms forecast across several Himalayan and hilly regions.
- Kathmandu expected at 27–29°C, while Bhairahawa may become the warmest city at 35–37°C
- Monsoon winds remain dominant, with the monsoon trough positioned south of its normal location
Heavy rainfall is likely at one or two places in the hilly areas of Koshi, Bagmati and Gandaki provinces on Sunday, according to the Meteorological Forecasting Division.
Generally cloudy conditions are expected in the Himalayan and hilly regions, while the Terai is forecast to remain partly cloudy. Moderate rain or snowfall accompanied by thunder and lightning is likely at some places in the mountains and hills, while isolated parts of the plains may also receive rainfall and thunderstorms.
For Sunday night, moderate rain or snowfall with thunder and lightning is expected in parts of the Himalayan areas of Koshi, Bagmati, Gandaki and Karnali provinces, and at one or two places in the Himalayan regions of Lumbini and Sudurpashchim.
The division has also forecast moderate rainfall with thunderstorms in some hilly areas of Koshi, Bagmati and Gandaki, while isolated locations in Lumbini, Karnali and Sudurpashchim may receive similar weather. Parts of the Terai in Koshi, Bagmati, Gandaki and Lumbini are also likely to see rain and thunderstorms.
According to the department, the country remains under the influence of monsoon winds, with a partial influence of westerly winds. The monsoon trough remains south of its average position, while a low-pressure system over the North Andaman Sea is expected to strengthen and move west-northwestward.
In Kathmandu, temperatures are expected to range between 27–29°C during the day and 18–20°C at night, with a 30 percent chance of rainfall during the day.
Pokhara is forecast to record 27–29°C during the day and 19–21°C at night, with moderate rain and thunderstorms likely during both periods.
Among major cities, Bhairahawa is expected to be the hottest, with temperatures of 35–37°C, followed by Janakpur (34–36°C), Dhangadhi (33–35°C), and Biratnagar and Simara (33–35°C). Nepalgunj is expected to record 32–34°C.
Among cooler locations, Jumla is forecast at 18–20°C during the day and 10–12°C at night, while Jomsom is expected to see 19–21°C during the day and 12–14°C at night.
The latest forecast points to continued rain and thunderstorm activity across much of Nepal, particularly in the Himalayan and hilly regions, with authorities advising caution in areas vulnerable to heavy rainfall.