Katmandu Weather in September

Katmandu in September sees high daytime temperatures of 26°C (79°F) and nighttime lows of 19°C (66°F). As part of the rainy season, showers are frequent and often heavy. Budget around 332 mm (13 in) of rainfall for the month.

Rainfall in Katmandu in September

As part of the rainy season, Katmandu sees around 10 days of rain in September, with an average of 332 mm (13 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours.

Temperature in Katmandu in September

In September, Katmandu gets high temperatures, with highs of 26°C (79°F). Nights cool to around 19°C (66°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. 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 Katmandu in September

The month brings about 133 hours of sunlight, offering a comfortable mix of sun and rainy moments.

Wind Speed in Katmandu in September

Wind speeds average () during September. This means conditions are typically very calm, with barely any noticeable air movement. While this is an average, some days may bring a light breeze, but many remain entirely still.

September in Katmandu has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.