Tokyo in July: what to plant
Over the last 5 years, July in Tokyo has run 24.3–32.6°C with about 115 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 Tokyo is actually having, today.
Grow one in Tokyo's weather right now →❄️ No sub-zero nights in July 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 29, first autumn frost around Dec 14 — roughly 289 frost-free days. Sow tender crops after the last frost date and make sure they finish before the first.
☀️ About 10.3 h of sunshine a day this month. Within the month it warms by about 2.7°C from the first ten days to the last.
Sow this month — when would you harvest?
Assuming you sow in mid-July, then adding up the warmth Tokyo usually gets, one day at a time — which is why some of these run past the end of the month.
| Crop | Days | Harvest around |
|---|---|---|
| 🌶️ Okra | 55 | Sep 7 |
| 🥒 Luffa | 79 | Oct 1 |
| 🥒 Bitter melon | 70 | Sep 22 |
| 🌿 Amaranth greens | 29 | Aug 12 |
| 🌱 Microgreens | 5 | Jul 19 |
| 🌻 Sunflower | 48 | Aug 31 |
| 🏵️ Marigold | 27 | Aug 10 |
| 🥢 Yardlong bean | 60 | Sep 12 |
| 🌽 Sweet Corn | 48 | Aug 31 |
| 🌿 Basil | 20 | Aug 3 |
| 🍃 Mint | 20 | Aug 3 |
⏳ Too late this month: Winter melon would still be in the ground when the first frost arrives (around Dec 14). Sow them earlier in the year, or grow them under cover.
Best crops to sow now
- 🌶️ Okra Ideal about 56 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🍈 Winter melon Ideal about 98 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🥒 Luffa Ideal about 75 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🥒 Bitter melon Ideal about 69 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🌿 Amaranth greens Ideal about 30 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🌱 Microgreens Ideal about 5 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🌻 Sunflower Good about 49 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🏵️ Marigold Marginal about 28 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🥢 Yardlong bean Ideal about 60 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🌽 Sweet Corn Ideal about 49 days to harvest Recent mean 28.5°C — right in the sweet spot
- 🌿 Basil Ideal about 20 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
- 🍃 Mint Ideal about 20 days to harvest 🪴 Windowsill pot — sheltered from outdoor weather
Leave these for another month
- 🌿 Dill — Recent mean 28.5°C is too hot (ideal 9–26°C)
- 🌿 Parsley — Recent mean 28.5°C is too hot (ideal 7–25°C)
- 🌿 Coriander — Recent mean 28.5°C is too hot (ideal 8–24°C)
Other months in Tokyo
📍 Somewhere else? Look up your own city →
Temperature and rainfall come from Open-Meteo's historical observations for Tokyo, 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.