When to plant melon (cantaloupe/watermelon) in Fukuoka
Melon (cantaloupe/watermelon) is frost-tender, so every date keys off Fukuoka's last spring frost of Apr 4.
Step 1 · Sow
Start seeds indoors
Mar 21 – Apr 11
Before your last frost, on a warm windowsill or heat mat.
Step 2 · Plant
Transplant outdoors
Jun 17 – Jul 8
Once frost risk has passed and nights stay mild.
Step 3 · Harvest
Harvest window
Aug 31 – Sep 25
Picking runs until conditions turn against the crop.
Window
Days to maturity
75 – 100 d
Fukuoka's 239-day season leaves this much room.
Melon (cantaloupe/watermelon) on Fukuoka's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
APR 4
NOV 30
Common questions
When can I sow melon (cantaloupe/watermelon) outdoors in Fukuoka?
Direct-sow around mid June (Jun 17–Jul 8) in Fukuoka, based on its local frost dates. Confidence 44%.
When will melon (cantaloupe/watermelon) be ready to harvest in Fukuoka?
Expect to harvest from around late August (Aug 31–Sep 25) in Fukuoka, based on its local frost dates. Confidence 40%.
When should I start melon (cantaloupe/watermelon) seeds indoors in Fukuoka?
Start seeds indoors around late March (Mar 21–Apr 11) in Fukuoka, based on its local frost dates. Confidence 43%.
When can I transplant melon (cantaloupe/watermelon) outdoors in Fukuoka?
Transplant outdoors around mid June (Jun 17–Jul 8) in Fukuoka, based on its local frost dates. Confidence 44%.
How long is the growing season in Fukuoka?
Fukuoka has roughly 239 frost-free days, which is enough time to grow melon (cantaloupe/watermelon) to maturity outdoors.
The rule of thumb
Sow melon (cantaloupe/watermelon) 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Fukuoka's frost dates.
Confidence 45/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.