Kathmandu experiences a monsoon season that typically spans from June to September, with July and August seeing the heaviest rainfall. During this time, the city is often drenched by afternoon and evening showers, which can range from light drizzles to intense downpours. The rains are vital for replenishing water resources and supporting agriculture, but they also come with challenges.
Heavy rain in Kathmandu can lead to urban flooding, as the city's drainage systems struggle to cope with the volume of water. This can cause traffic disruptions and make daily commuting difficult. The rain also turns many of the unpaved roads into muddy pathways, particularly in the outskirts of the city. Landslides become a concern in the hilly areas surrounding the Kathmandu Valley, sometimes affecting access to rural areas.
On the positive side, the rain brings a refreshing change to the hot and dusty pre-monsoon atmosphere, clearing the air and cooling the environment. The surrounding hills and forests, such as those in Shivapuri and Phulchowki, turn lush and green, making the monsoon season a beautiful time for nature lovers, though it’s less ideal for trekkers due to slippery trails and leeches.
While the rain is a regular part of life in Kathmandu, it's important for residents and visitors alike to stay prepared with rain gear and to be cautious of possible disruptions caused by sudden downpours.