Guangzhou Climate & Weather Averages
China · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
Best Time to Visit Guangzhou
Based on temperature comfort, low rainfall, and sunshine hours, the best months to visit Guangzhou are:
April, October, November
Scores based on ideal temperature (18-28°C), low precipitation, and high sunshine. April scores 59/100.
Guangzhou has a Humid Subtropical climate with hot summers and warm winters. The warmest month is July with an average temperature of 29.6°C (85.3°F), while December is the coldest at 15.4°C (59.7°F). Annual precipitation averages 2228.0mm spread across approximately 229.0 rainy days per year, with June being the wettest month at 406.2mm and December the driest at 21.6mm. The city receives an average of 5.8-10.7 hours of sunshine per day, with the sunniest months being July and September. Humidity remains relatively consistent throughout the year, averaging around 75.2% annually, while average wind speeds reach 18.0 km/h. The overall annual mean temperature is 23.1°C (73.6°F), reflecting the humid subtropical conditions shaped by Guangzhou's latitude (23.13°) and surrounding geography. For travelers, the best time to visit is April, October, November, when temperatures are comfortable and rainfall is lower.
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.
Seasonal Climate Overview
Spring (Mar-May)
Average temperature 23.4°C (74.1°F), rainfall 220.3mm, sunshine 6.8 hrs/day, humidity 79.2%. Warm season conditions prevail. Expect around 22.3 rainy days per month.
Summer (Jun-Aug)
Average temperature 28.6°C (83.5°F), rainfall 318.7mm, sunshine 9.1 hrs/day, humidity 82.8%. Warm season conditions prevail. Expect around 27.5 rainy days per month.
Autumn (Sep-Nov)
Average temperature 24.6°C (76.3°F), rainfall 160.6mm, sunshine 8.3 hrs/day, humidity 73.2%. Warm season conditions prevail. Expect around 16.7 rainy days per month.
Winter (Dec-Feb)
Average temperature 15.9°C (60.6°F), rainfall 42.8mm, sunshine 7.1 hrs/day, humidity 65.7%. Mild transitional weather characterizes this period. Expect around 9.7 rainy days per month.
Monthly Temperature Averages (°C / °F)
| Month | Avg High | Avg Low | Mean Temp |
|---|---|---|---|
| January | 20.4°C (68.7°F) | 11.6°C (52.9°F) | 15.6°C (60.1°F) |
| February | 21.4°C (70.5°F) | 12.9°C (55.2°F) | 16.7°C (62.1°F) |
| March | 25.1°C (77.2°F) | 17.3°C (63.1°F) | 20.8°C (69.4°F) |
| April | 27.3°C (81.1°F) | 19.7°C (67.5°F) | 23.1°C (73.6°F) |
| May | 30.1°C (86.2°F) | 23.3°C (73.9°F) | 26.2°C (79.2°F) |
| June | 31.3°C (88.3°F) | 25.5°C (77.9°F) | 28.0°C (82.4°F) |
| July | 33.3°C (91.9°F) | 26.6°C (79.9°F) | 29.6°C (85.3°F) |
| August | 31.7°C (89.1°F) | 25.8°C (78.4°F) | 28.3°C (82.9°F) |
| September | 31.5°C (88.7°F) | 25.2°C (77.4°F) | 27.9°C (82.2°F) |
| October | 28.4°C (83.1°F) | 21.2°C (70.2°F) | 24.4°C (75.9°F) |
| November | 25.7°C (78.3°F) | 18.0°C (64.4°F) | 21.4°C (70.5°F) |
| December | 20.0°C (68.0°F) | 11.5°C (52.7°F) | 15.4°C (59.7°F) |
Monthly Precipitation (mm)
| Month | Avg Rainfall | Bar |
|---|---|---|
| January | 25.2 mm | |
| February | 81.7 mm | |
| March | 123.5 mm | |
| April | 241.1 mm | |
| May | 296.3 mm | |
| June | 406.2 mm | |
| July | 205.2 mm | |
| August | 344.8 mm | |
| September | 302.5 mm | |
| October | 124.3 mm | |
| November | 55.1 mm | |
| December | 21.6 mm |
Monthly Rainy Days (avg days with rain > 0.1mm)
| Month | Avg Rainy Days | Bar |
|---|---|---|
| January | 10.6 | |
| February | 13.2 | |
| March | 19.8 | |
| April | 21.0 | |
| May | 26.2 | |
| June | 29.0 | |
| July | 25.2 | |
| August | 28.4 | |
| September | 26.2 | |
| October | 12.8 | |
| November | 11.2 | |
| December | 5.2 |
Monthly Humidity (%)
| Month | Avg Humidity | Bar |
|---|---|---|
| January | 64.3% | |
| February | 73.7% | |
| March | 76.6% | |
| April | 79.1% | |
| May | 82.0% | |
| June | 85.0% | |
| July | 78.8% | |
| August | 84.7% | |
| September | 82.4% | |
| October | 68.7% | |
| November | 68.5% | |
| December | 59.1% |
Monthly Wind Speed (avg max km/h)
| Month | Avg Max Wind | Bar |
|---|---|---|
| January | 18.4 km/h | |
| February | 18.4 km/h | |
| March | 19.2 km/h | |
| April | 18.6 km/h | |
| May | 17.2 km/h | |
| June | 18.2 km/h | |
| July | 18.1 km/h | |
| August | 15.4 km/h | |
| September | 15.1 km/h | |
| October | 20.3 km/h | |
| November | 17.8 km/h | |
| December | 19.2 km/h |
Monthly UV Index (avg max)
| Month | UV Index | Risk Level | Bar |
|---|---|---|---|
| January | — | — | |
| February | — | — | |
| March | — | — | |
| April | — | — | |
| May | — | — | |
| June | — | — | |
| July | — | — | |
| August | — | — | |
| September | — | — | |
| October | — | — | |
| November | — | — | |
| December | — | — |
Monthly Sunshine Hours (daily average)
| Month | Avg Daily Sunshine | Bar |
|---|---|---|
| January | 7.3 hrs | |
| February | 6.4 hrs | |
| March | 5.8 hrs | |
| April | 6.6 hrs | |
| May | 7.9 hrs | |
| June | 7.9 hrs | |
| July | 10.7 hrs | |
| August | 8.6 hrs | |
| September | 8.8 hrs | |
| October | 8.4 hrs | |
| November | 7.8 hrs | |
| December | 7.5 hrs |
Frequently Asked Questions
What is the hottest month in Guangzhou?
July is the hottest month with an average temperature of 29.6°C (85.3°F).
What is the coldest month in Guangzhou?
December is the coldest month with an average temperature of 15.4°C (59.7°F).
What is the rainiest month in Guangzhou?
June is the wettest month with an average of 406.2mm of precipitation. The city experiences about 229.0 rainy days per year.
When is the best time to visit Guangzhou?
The best time to visit Guangzhou is during April, October, November, when temperatures are comfortable and rainfall is lower.
Cities with Similar Climate (Humid Subtropical)
Other Cities in China
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.