Kathmandu Weather in September

With daytime temperatures of 26°C (79°F) and nighttime lows of 19°C (66°F), September in Kathmandu brings high temperatures during the day. Do keep in mind that September is part of the rainy season, with frequent and often heavy rainfall.

Rainfall in Kathmandu in September

As part of the rainy season, Kathmandu sees around 10 days of rain in September, with an average of 336 mm (13 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Kathmandu in September

September in Kathmandu brings high temperatures, with highs of 26°C (79°F) and nights around 19°C (66°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 19°C (66°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Kathmandu in September

The city usually sees around 133 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

Wind Speed in Kathmandu in September

September sees wind speeds averaging (). You'll typically experience very calm weather with minimal air movement throughout the month. Keep in mind this is an average. While most days are nearly windless, occasional windier days may still occur.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April, October, November and December typically offer the best weather for Kathmandu.