What is the weather like in Kathmandu vs Ulaanbaatar in September?

In September, Kathmandu averages 29°C high / 20°C low with about 438 mm of rain; Ulaanbaatar averages 17°C high / 2°C low with about 43 mm.

Kathmandu vs Ulaanbaatar in September

Ulaanbaatar is the better pick in September — 78 vs 50 on SeasonMap's comfort score. Ulaanbaatar is cool, a little rain, clean air, while Kathmandu is hot, soaked, muggy air.

Kathmandu vs Ulaanbaatar — September climate, side by side

	🇳🇵 Kathmandu	🇲🇳 Ulaanbaatar
Comfort score	50/100 (D)	78/100 (B)
Feels-like high	33°C	14°C
Avg high / low	29° / 20°	17° / 2°
Rainfall	438 mm	43 mm
Rainy days	29	8
Humidity	90%	64%
Air quality (AQI)	63	36

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Kathmandu vs Ulaanbaatar in September — FAQ

Is September better in Kathmandu or Ulaanbaatar?: Ulaanbaatar is the better pick in September — 78 vs 50 on SeasonMap's comfort score. Ulaanbaatar is cool, a little rain, clean air, while Kathmandu is hot, soaked, muggy air.
What is the weather like in Kathmandu vs Ulaanbaatar in September?: In September, Kathmandu averages 29°C high / 20°C low with about 438 mm of rain; Ulaanbaatar averages 17°C high / 2°C low with about 43 mm.