Monthly climate guide
Sa Pa weather in September
With highs near 28°C (83°F) and lows around 20°C (67°F), September feels hot in Sa Pa. Rainfall averages about 227 mm (very wet) and the sky is often cloudy. Daytime highs are about the same as August and 3°C warmer than October.
What stands out in September
- Humidity near 83% makes 28°C feel stickier than it sounds.
- Just 250 km apart, but Sa Pa runs about 2°C cooler than Hanoi this month.
- This is rainy-season territory in Sa Pa: short, heavy downpours are typical.
- Rain is above Sa Pa's usual level, by about 52%.
Avg high
28°C
83°F
Avg low
20°C
67°F
Rainfall
227 mm
very wet
Humidity
83%
relative
Sky
81%
cloud · often cloudy
Sa Pa weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 19°C / 65°F | 8°C / 47°F | 59 mm | 83% | 71% |
| February | 22°C / 71°F | 10°C / 49°F | 23 mm | 78% | 62% |
| March | 25°C / 78°F | 13°C / 56°F | 64 mm | 75% | 60% |
| April | 28°C / 83°F | 17°C / 62°F | 114 mm | 75% | 67% |
| May | 30°C / 86°F | 20°C / 68°F | 165 mm | 76% | 76% |
| June | 30°C / 85°F | 21°C / 71°F | 220 mm | 81% | 91% |
| July | 29°C / 85°F | 21°C / 70°F | 343 mm | 82% | 90% |
| August | 29°C / 84°F | 21°C / 70°F | 357 mm | 82% | 87% |
| September | 28°C / 83°F | 20°C / 67°F | 227 mm | 83% | 81% |
| October | 25°C / 78°F | 17°C / 62°F | 121 mm | 83% | 74% |
| November | 23°C / 74°F | 13°C / 56°F | 57 mm | 83% | 63% |
| December | 18°C / 65°F | 8°C / 47°F | 45 mm | 82% | 67% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit Sa Pa?
Compare the months in the chart above to find your ideal window.
Best time to visit Sa Pa →Other Vietnam cities in September
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Sa Pa weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/vietnam/sa-pa/september
<a href="https://weathercompare.eu/weather/vietnam/sa-pa/september">Sa Pa weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/vietnam/sa-pa" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Sa Pa weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/vietnam/sa-pa/september">Sa Pa weather in September</a> – WeatherCompare</p>
Sa Pa in September: quick answers
Is September a good time to visit Sa Pa?
September is one of the wetter months in Sa Pa, with about 227 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Sa Pa in September?
Average highs are about 28°C (83°F) and average lows about 20°C (67°F), based on 10 years of daily data.
Does it rain a lot in Sa Pa in September?
Sa Pa typically gets around 227 mm of rain in September — very wet.
Figures are long-term averages for the area around Sa Pa (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.