Tokyo in April: what to plant
Over the last 5 years, April in Tokyo has run 11.0–19.9°C with about 159 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 April 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 7.7 h of sunshine a day this month. Within the month it warms by about 4.0°C from the first ten days to the last.
Sow this month — when would you harvest?
Assuming you sow in mid-April, 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 |
|---|---|---|
| 🥔 Potato | 72 | Jun 25 |
| 🥬 Napa cabbage | 57 | Jun 10 |
| 🥬 Cauliflower | 64 | Jun 17 |
| 🥕 Parsnip | 80 | Jul 3 |
| 🌿 Rocket | 29 | May 13 |
| 🌿 Dill | 43 | May 27 |
| 🧅 Leek | 74 | Jun 27 |
| 🫛 Peas | 49 | Jun 2 |
| ⚪ Turnip | 38 | May 22 |
| 🫘 Broad bean | 60 | Jun 13 |
| 🍓 Strawberry | 52 | Jun 5 |
| 🏵️ Marigold | 53 | Jun 6 |
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 107 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🥬 Napa cabbage about 75 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🥬 Cauliflower about 84 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🥕 Parsnip about 111 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🌿 Rocket about 33 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🌿 Dill about 53 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🧅 Leek about 101 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🫛 Peas about 62 days to harvest Recent mean 15.4°C — right in the sweet spot
- ⚪ Turnip about 46 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🫘 Broad bean about 77 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🍓 Strawberry about 66 days to harvest Recent mean 15.4°C — right in the sweet spot
- 🏵️ Marigold about 72 days to harvest Recent mean 15.4°C — right in the sweet spot
Leave these for another month
- 🌶️ Okra — Recent mean 15.4°C is too cold (ideal 20–33°C)
- 🍆 Aubergine — Recent mean 15.4°C is too cold (ideal 18–32°C)
- 🍈 Winter melon — Recent mean 15.4°C is too cold (ideal 18–32°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.