Hangzhou in May: what to plant
Over the last 5 years, May in Hangzhou has run 17.4–26.8°C with about 139 mm of rain across the month. Here is what weather like that will carry to harvest.
Everything above is a five-year average. In the game it is this — the weather Hangzhou is actually having, today.
Grow one in Hangzhou's weather right now →❄️ No sub-zero nights in May in the last 5 years — frost is not the limiting factor here.
🗓️ This month sits inside the frost-free window. Average last spring frost around Feb 21, first autumn frost around Dec 12 — roughly 296 frost-free days. Sow tender crops after the last frost date and make sure they finish before the first.
☀️ About 7.8 h of sunshine a day this month. Within the month it warms by about 3.4°C from the first ten days to the last.
Sow this month — when would you harvest?
Assuming you sow in mid-May, then adding up the warmth Hangzhou usually gets, one day at a time — which is why some of these run past the end of the month.
| Crop | Days | Harvest around |
|---|---|---|
| 🥔 Potato | 50 | Jul 3 |
| 🫛 Edamame | 72 | Jul 25 |
| 🎃 Pumpkin | 70 | Jul 23 |
| 🍅 Tomato | 77 | Jul 30 |
| 🥒 Cucumber | 61 | Jul 14 |
| 🥬 Bok Choy | 25 | Jun 8 |
| 🌿 Garlic chives | 44 | Jun 27 |
| 🏵️ Marigold | 36 | Jun 19 |
| 🌻 Sunflower | 57 | Jul 10 |
| 🟣 Beetroot | 35 | Jun 18 |
| 🥕 Carrot | 46 | Jun 29 |
| 🧅 Onion | 52 | Jul 5 |
Best crops to sow now
They are all ideal for this month — the only real difference is how long each one takes, so pick whatever you want to eat.
- 🥔 Potato about 60 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🫛 Edamame about 100 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🎃 Pumpkin about 96 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🍅 Tomato about 108 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🥒 Cucumber about 85 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🥬 Bok Choy about 27 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🌿 Garlic chives about 50 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🏵️ Marigold about 40 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🌻 Sunflower about 71 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🟣 Beetroot about 39 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🥕 Carrot about 53 days to harvest Recent mean 22.1°C — right in the sweet spot
- 🧅 Onion about 62 days to harvest Recent mean 22.1°C — right in the sweet spot
Leave these for another month
- 🌿 Rocket — Recent mean 22.1°C is too hot (ideal 6–22°C)
- 🫛 Peas — Recent mean 22.1°C is too hot (ideal 7–21°C)
- 🌿 Spinach — Recent mean 22.1°C is too hot (ideal 5–22°C)
Other months in Hangzhou
📍 Somewhere else? Look up your own city →
Temperature and rainfall come from Open-Meteo's historical observations for Hangzhou, averaged day by day over the last 5 years. Whether a crop finishes in time is worked out from its own starting temperature and heat requirement — those numbers are listed on each crop page if you want to check them.