Guangzhou in September: what to plant
Averaged over the last 5 years of daily records, September in Guangzhou runs 25.0–31.8°C with about 284 mm of rain across the month. Here is what that climate actually supports.
❄️ No sub-zero nights in September in the last 5 years — frost is not the limiting factor here.
Best crops to sow now
- 🌱 Microgreens Fastest about 5 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🌿 Basil about 20 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🍃 Mint about 20 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🧅 Chives about 22 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🥢 Green Beans about 33 days to harvest Recent mean 28.4°C — right in the sweet spot
- 🥒 Cucumber about 52 days to harvest Recent mean 28.4°C — right in the sweet spot
- 🍅 Tomato about 71 days to harvest Recent mean 28.4°C — right in the sweet spot
- 🌶️ Chili Pepper about 79 days to harvest Recent mean 28.4°C — right in the sweet spot
Leave these for another month
- 🧅 Onion — Recent mean 28.4°C is too hot (ideal 8–28°C)
- 🧄 Garlic — Recent mean 28.4°C is too hot (ideal 4–24°C)
- ⚪ Turnip — Recent mean 28.4°C is too hot (ideal 8–24°C)
Other months in Guangzhou
Temperature and rainfall are 5-year daily normals from the ERA5 reanalysis via Open-Meteo. Suitability is scored with the same degree-day model the game runs on — it is not a generic planting calendar.