Guangzhou Weather in September
China · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Guangzhou sees average temperatures ranging from a low of 25.2°C (77.4°F) to a high of 31.5°C (88.7°F), with a mean of 27.9°C (82.2°F). Compared to the annual average of 23.1°C (73.6°F), this month is 4.8°C warmer than the yearly norm. Precipitation averages 302.5mm, making it approximately 117.0mm wetter than the monthly average of 186.0mm. The city receives an average of 8.8 hours of sunshine per day during September, with relative humidity averaging 82.4%. Wind speeds reach an average maximum of 15.1 km/h. For travelers, this month offers a temperature experience in Guangzhou, with wetter-than-average conditions compared to the rest of the year.
Guangzhou's humid subtropical climate is one of the wettest among major Chinese cities. I visited during the Canton Fair in April and found the weather pleasant, but the summer months bring intense heat and frequent typhoons. The data clearly shows October to December as the optimal window, when the humidity drops and the city's famous food scene can be enjoyed in comfort.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 28.3°C (82.9°F) | 27.9°C (82.2°F) | 24.4°C (75.9°F) |
| Rainfall | 344.8mm | 302.5mm | 124.3mm |
| Sunshine | 8.6 hrs | 8.8 hrs | 8.4 hrs |
| Humidity | 84.7% | 82.4% | 68.7% |
| Wind | 15.4 km/h | 15.1 km/h | 20.3 km/h |
| Rainy Days | 28.4 | 26.2 | 12.8 |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Guangzhou in September, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Guangzhou in September?
The average temperature in Guangzhou during September ranges from 25.2°C (77.4°F) to 31.5°C (88.7°F), with a mean of 27.9°C (82.2°F).
How much does it rain in Guangzhou in September?
Guangzhou receives an average of 302.5mm of precipitation in September, spread across approximately 26.2 rainy days.
What should I pack for Guangzhou in September?
Based on September weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 302.5mm of precipitation.
Is September a good time to visit Guangzhou?
September is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Guangzhou
Cities with Similar September Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 23.13°, 113.26°. Timezone: Asia/Shanghai. Last updated: 2026-07-30.