Gansu Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Gansu, China in September.

Thinking about venturing to Gansu, China this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What to Expect in Gansu in September

Gansu, China is a region in China. In September, Gansu experiences a range of weather conditions, with temperatures that range from mild to warm and precipitation levels ranging from almost none to high.

Temperatures

The average maximum daytime temperatures vary from mild in Xiahe at 14°C (57°F) to warm in Dunhuang at 28°C (82°F). Nighttime temperatures generally drop to 12°C (54°F) in Dunhuang and 3°C (37°F) in Xiahe.

To learn more about the conditions in specific areas of Gansu, China, check out the map below.

Precipitation

In September, precipitation varies across different areas. From almost no rainfall in Dunhuang with an average of 3.3 mm (0.1 in) to high rainfall in Xiahe with 142 mm (5.6 in).

Average sunshine

September brings good sunshine to many areas. Lanzhou sees around 193 hours of sunlight, great for visitors looking for bright days.

Explore Gansu by month

Best Places to Visit in Gansu in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Gansu.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Gansu

What is the weather like in September for some of the most popular destinations in Gansu, China?

Temperature range in Gansu (September)

Precipitation variation in Gansu (September)

Lanzhou

In September Lanzhou generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 11°C (52°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
27°C (81°F)
22°C (72°F)
16°C (61°F)
Min temperature
15°C (59°F)
11°C (52°F)
4°C (39°F)
Monthly sun hours
242 hours
193 hours
186 hours
Monthly rainfall
99 mm (3.9 in)
76 mm (3 in)
41 mm (1.6 in)
Monthly rainy days
13 days
14 days
9 days
Weather conditions

Dunhuang

In September Dunhuang generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 12°C (54°F) and almost no monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
33°C (91°F)
28°C (82°F)
19°C (66°F)
Min temperature
18°C (64°F)
12°C (54°F)
3°C (37°F)
Monthly sun hours
317 hours
297 hours
281 hours
Monthly rainfall
5.9 mm (0.2 in)
3.3 mm (0.1 in)
1.3 mm (0.1 in)
Monthly rainy days
3 days
a single day
a single day
Weather conditions

Zhangye

In September Zhangye generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
27°C (81°F)
23°C (73°F)
16°C (61°F)
Min temperature
14°C (57°F)
9°C (48°F)
1°C (34°F)
Monthly rainfall
43 mm (1.7 in)
33 mm (1.3 in)
12 mm (0.5 in)
Monthly rainy days
7 days
6 days
2 days
Weather conditions

Jiayuguan

In September Jiayuguan generally has high temperatures with maximum daytime temperatures around 23°C (73°F), minimum nighttime temperatures around 10°C (50°F) and low monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
28°C (82°F)
23°C (73°F)
16°C (61°F)
Min temperature
15°C (59°F)
10°C (50°F)
2°C (36°F)
Monthly rainfall
26 mm (1 in)
19 mm (0.7 in)
7 mm (0.3 in)
Monthly rainy days
6 days
4 days
2 days
Weather conditions

Pingliang

In September Pingliang generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 11°C (52°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
25°C (77°F)
21°C (70°F)
15°C (59°F)
Min temperature
15°C (59°F)
11°C (52°F)
4°C (39°F)
Monthly rainfall
155 mm (6.1 in)
126 mm (5 in)
69 mm (2.7 in)
Monthly rainy days
12 days
14 days
11 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Gansu, in China.

In our records: China September extremes

Notable September records observed across cities in China in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • From our sources, the wettest September day in China brought 362 mm (14 in) in Guangzhou on September 6, 1992.

Popular cities in September

Day & night temperatures, rainfall and average weather in Gansu in September.

City Weather Day temp Night temp Rainfall
Lanzhou 22°C (72°F) 11°C (52°F) 76 mm (3 in)
Dunhuang 28°C (82°F) 12°C (54°F) 3.3 mm (0.1 in)
Zhangye 23°C (73°F) 9°C (48°F) 33 mm (1.3 in)
Jiayuguan 23°C (73°F) 10°C (50°F) 19 mm (0.7 in)
Pingliang 21°C (70°F) 11°C (52°F) 126 mm (5 in)
Xiahe 14°C (57°F) 3°C (37°F) 142 mm (5.6 in)

Gansu weather in September: frequently asked questions

What is the weather like in Gansu, China in September?

September in Gansu, China brings perfect weather. In Lanzhou, daytime temperatures are typically around 22°C (72°F) and nighttime lows hover near 11°C (52°F).

What is the average temperature in Gansu, China in September?

In Lanzhou, the average daytime high in September is 22°C (72°F), while nighttime temperatures drop to around 11°C (52°F).

Does Gansu, China get a lot of rain in September?

Not particularly. Lanzhou averages just 76 mm (3 in) of rain in September, making it a mostly dry month for Gansu, China.

Is September a Good Time to Visit Gansu, China?

We consider September to be one of the best times to travel to Gansu, China. Typically, the climate in Lanzhou is perfect. However, the weather conditions may vary depending on your destination.

On average, the best time to visit Gansu, China is in April, May, June, July, August and September with generally perfect weather in Lanzhou. On the other hand, the months of January and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Gansu.

Weather and climate has detailed information for every country in the world. Are you going to China? Get detailed historical weather averages for many cities in China.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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