Mild
Average highs are around 21°C, so days are mild rather than hot.
September verdict
Lanzhou, Gansu, China in September
Weather score49Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 52mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
21°C
Rain
52mm
Sun
6.1h
Weather score
49
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 52mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Map
Weather map
Compare Lanzhou, Gansu, China with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September21°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to August
This stretch sets the upper range for average daytime heat.
Rain
September52mm average rain
September sits near Lanzhou's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.1 hours average sun
September is below Lanzhou's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September49 weather score
September scores below Lanzhou's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
