What is the weather like in Hanoi vs Sapa in September?

In September, Hanoi averages 32°C high / 26°C low with about 276 mm of rain; Sapa averages 22°C high / 17°C low with about 238 mm.

Hanoi vs Sapa in September

Sapa is the better pick in September — 69 vs 44 on SeasonMap's comfort score. Sapa is warm, soaked, clean air, while Hanoi is sweltering, soaked, poor air quality.

Hanoi vs Sapa — September climate, side by side

	🇻🇳 Hanoi	🇻🇳 Sapa
Comfort score	44/100 (F)	69/100 (C)
Feels-like high	38°C	25°C
Avg high / low	32° / 26°	22° / 17°
Rainfall	276 mm	238 mm
Rainy days	21	25
Humidity	85%	86%
Air quality (AQI)	104	45

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

Month by month

Hanoi 🇻🇳 Vietnamsweltering, soaked, poor air quality · best December44
Sapa 🇻🇳 Vietnamwarm, soaked, clean air · best November69

Hanoi vs Sapa in September — FAQ

Is September better in Hanoi or Sapa?: Sapa is the better pick in September — 69 vs 44 on SeasonMap's comfort score. Sapa is warm, soaked, clean air, while Hanoi is sweltering, soaked, poor air quality.
What is the weather like in Hanoi vs Sapa in September?: In September, Hanoi averages 32°C high / 26°C low with about 276 mm of rain; Sapa averages 22°C high / 17°C low with about 238 mm.