When to plant onion in Cairo
Onion is cold-hardy, so every date keys off Cairo's frost dates.
Step 1 · Sow
Direct sow outdoors
Aug 15 – Sep 25
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Feb 1 – Mar 31
Picking runs until conditions turn against the crop.
Window
Days to maturity
90 – 110 d
From sowing to first pick.
Common questions
When can I sow onion outdoors in Cairo?
Direct-sow around mid August (Aug 15–Sep 25) in Cairo, based on its local frost dates. Confidence 78%.
When will onion be ready to harvest in Cairo?
Expect to harvest from around early February (Feb 1–Mar 31) in Cairo, based on its local frost dates. Confidence 70%.
The rule of thumb
Sow onion as soon as the soil is workable — it tolerates cool weather and light frost. Every date on this page is derived from that rule and Cairo's frost dates.
Confidence 78/100 · Curated · based on NASA POWER (modeled) 1991–2020 · frost dates are probabilities, not guarantees.