Best time to visit Lanzhou: month-by-month weather (2026)
The highest-scoring months in Lanzhou are May, Jun, Jul and Aug.
Best months
May, Jun, Jul and Aug
Peak season
May, Jun, Jul and Aug
Off season
Jan, Feb and Mar
Monthly Temperatures (°C)
Monthly Rainfall (mm)
Month-by-Month Guide
Temperature, rainfall and sunshine are measured. The visit score below is derived from those three (design spec §5.3)estimate.
Jan
Temp: -8.9°C – 2.5°C
Rain: 4mm
Sunshine: 8.6h/day
Visit score: 5/10
Feb
Temp: -5.2°C – 5.4°C
Rain: 11mm
Sunshine: 7.6h/day
Visit score: 4.8/10
Mar
Temp: 0.1°C – 13.5°C
Rain: 8mm
Sunshine: 9.1h/day
Visit score: 5/10
Apr
Temp: 6°C – 19.9°C
Rain: 17mm
Sunshine: 8.6h/day
Visit score: 6.5/10
May
BestTemp: 11.8°C – 25.8°C
Rain: 37mm
Sunshine: 8.9h/day
Visit score: 10/10
Jun
BestTemp: 15.6°C – 28.7°C
Rain: 35mm
Sunshine: 9.3h/day
Visit score: 10/10
Jul
BestTemp: 18.5°C – 30.9°C
Rain: 46mm
Sunshine: 10.3h/day
Visit score: 9.1/10
Aug
BestTemp: 17.8°C – 29.6°C
Rain: 56mm
Sunshine: 9.9h/day
Visit score: 9.1/10
Sep
Temp: 14°C – 24.6°C
Rain: 79mm
Sunshine: 8.6h/day
Visit score: 9.1/10
Oct
Temp: 6.9°C – 16.7°C
Rain: 63mm
Sunshine: 7.2h/day
Visit score: 5.3/10
Nov
Temp: -0.4°C – 9.8°C
Rain: 7mm
Sunshine: 8.3h/day
Visit score: 5/10
Dec
Temp: -7°C – 3.3°C
Rain: 3mm
Sunshine: 8.3h/day
Visit score: 5/10
When to go, and when not to
May through August form the strongest stretch of the year in Lanzhou, combining warm to hot afternoons with some of the highest sunshine totals, ranging from about 8.9 to 10.3 hours per day. Daytime highs climb steadily across these months, from around 25.8C in May to nearly 31C in July, with correspondingly mild to warm overnight lows.
This same stretch is also the peak season, so travelers should expect more visitors during these months. July is the hottest month at close to 31C, and August brings the heaviest rainfall of the peak season at 56mm, so travelers sensitive to heat or rain may want to lean toward May or June instead of the later summer months.
Season Guide
Spring
March – May
Mild temperatures and blooming gardens. A great time for sightseeing with fewer crowds than summer.
Packing tips
- · Light layers
- · Rain jacket
- · Comfortable walking shoes
Summer
June – August
Warmest months with the longest days. Peak tourist season in most destinations.
Packing tips
- · Sunscreen
- · Hat
- · Light clothing
- · Refillable water bottle
Autumn
September – November
Cooling temperatures and autumn foliage. Shoulder season with good deals on accommodations.
Packing tips
- · Medium layers
- · Sweater
- · Waterproof jacket
Winter
December – February
Coldest months with shorter days. Holiday markets and winter activities in many cities.
Packing tips
- · Warm coat
- · Scarf and gloves
- · Thermal layers
- · Waterproof boots
Keep reading
Sources
- GeoNames city database — CC BY 4.0, fetched September 14, 2026
- Open-Meteo climate archive — CC BY 4.0, fetched September 21, 2026
AI-written interpretation reviewed against the data above — claude-sonnet-5, generated September 21, 2026. Every number on this page comes from a dataset named here; the formulas are public.