What is the weather like in Ha Long vs Sapa in September?

In September, Ha Long averages 30°C high / 26°C low with about 309 mm of rain; Sapa averages 22°C high / 17°C low with about 238 mm.

Ha Long vs Sapa in September

Sapa is the better pick in September — 69 vs 59 on SeasonMap's comfort score. Sapa is warm, soaked, clean air, while Ha Long is sweltering, soaked, muggy air.

Ha Long vs Sapa — September climate, side by side

	🇻🇳 Ha Long	🇻🇳 Sapa
Comfort score	59/100 (D)	69/100 (C)
Feels-like high	36°C	25°C
Avg high / low	30° / 26°	22° / 17°
Rainfall	309 mm	238 mm
Rainy days	23	25
Humidity	85%	86%
Air quality (AQI)	80	45

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

Month by month

Ha Long 🇻🇳 Vietnamsweltering, soaked, muggy air · best November59
Sapa 🇻🇳 Vietnamwarm, soaked, clean air · best November69

Ha Long vs Sapa in September — FAQ

Is September better in Ha Long or Sapa?: Sapa is the better pick in September — 69 vs 59 on SeasonMap's comfort score. Sapa is warm, soaked, clean air, while Ha Long is sweltering, soaked, muggy air.
What is the weather like in Ha Long vs Sapa in September?: In September, Ha Long averages 30°C high / 26°C low with about 309 mm of rain; Sapa averages 22°C high / 17°C low with about 238 mm.