Osaka, Osaka
When to plant melon (cantaloupe/watermelon) in Osaka
Station data · 86% confidence warm seasontender to frost
- Direct sowearly AprilApr 5 – Apr 26 · 86% conf.
- Harvestmid JuneJun 19 – Jul 14 · 77% conf.
- Start seeds indoorsearly MarchMar 1 – Mar 22 · 82% conf.
- Transplant outdoorsearly AprilApr 5 – Apr 26 · 86% conf.
The growing window at a glance
Melon (cantaloupe/watermelon) at a glance in Osaka
- Needs soil above 21°C to germinate well.
- Days to maturity: 75–100 days.
- Climate zone: Humid subtropical (Cfa).
Frost dates are probabilities, not guarantees. Your garden's microclimate — slopes, walls, urban heat, cold pockets — can shift these dates by a week or more. Use them as a confident starting point, then watch your local forecast.
Frequently asked
When can I sow melon (cantaloupe/watermelon) outdoors in Osaka?
Direct-sow around early April (Apr 5–Apr 26) in Osaka, based on its local frost dates. Confidence 86%.
When will melon (cantaloupe/watermelon) be ready to harvest in Osaka?
Expect to harvest from around mid June (Jun 19–Jul 14) in Osaka, based on its local frost dates. Confidence 77%.
When should I start melon (cantaloupe/watermelon) seeds indoors in Osaka?
Start seeds indoors around early March (Mar 1–Mar 22) in Osaka, based on its local frost dates. Confidence 82%.
When can I transplant melon (cantaloupe/watermelon) outdoors in Osaka?
Transplant outdoors around early April (Apr 5–Apr 26) in Osaka, based on its local frost dates. Confidence 86%.
How long is the growing season in Osaka?
Osaka has roughly 258 frost-free days, which is enough time to grow melon (cantaloupe/watermelon) to maturity outdoors.
Melon (cantaloupe/watermelon) in other places
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