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When to plant watermelons in Gaziantep: 15 April – 14 September

In Gaziantep, watermelon: sow for seedlings from 25 February to 17 August; plant into a greenhouse from 25 March to 14 September; plant out into open ground from 15 April to 14 September.

Watermelon in Gaziantep: soil, season and weather

In Gaziantep the soil, not frost, sets the date: the last frost is over around 22 February, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 15 April, 52 days later.

Last spring frost22 February
Top 7 cm of soil at 18 °C15 April, 52 days after the last frost
Into an unheated greenhouse25 March – 14 September; March outside: 5.4 °C at night, 15 °C by day; card 18–35 °C
First autumn frost24 December, 253 days after the start
Days in the bed to the first harvest (card)59
First harvest, if planted in this window13 June – 12 November
Days left for picking194
Daylight12:02 on 18 March, 13:08 on 15 April
Watering outdoors when fruiting (card)every 5 days; the driest month, July, has 0 rainy days

The same dates in Gaziantep hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Gaziantep: care after planting

Planted on 15 April: in the first weeks water every 5 days.

Feeding, by the card’s schedule from that day:

  • 15 April — feed: balanced (NPK)

Pests and diseases of watermelon to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Gaziantep during the watermelon season

Days average above the watermelon card's 18–35 °C in July (36.9 °C) and August (36.9 °C). Months that stay below 18 °C even by day on average: November (16.4 °C) and December (10.5 °C). Nights average below 18 °C in April, May and October–December (3.5–14.6 °C).

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
April21.39.937813:08
May26.814.626614:08
June3319.84114:42
July36.923.21014:29
August36.923.21013:37
September32.119.72112:27
October25.114.118311:17
November16.47.756710:12
December10.53.585109:38

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Gaziantep, Adana is 1 day earlier and Erzurum 57 days later.

CityDistanceDateDifference
Adana183 km14 April – 5 September1 day earlier
Kayseri247 km20 May – 1 August35 days later
Diyarbakır269 km1 May – 16 August16 days later
Konya441 km28 April – 31 July13 days later
Erzurum464 km11 June – 7 July57 days later
Samsun478 km24 May – 6 September39 days later

Where to buy watermelon plants and seeds near Gaziantep

Buy plants ready to set out from 15 April to 14 September (from 25 March to 14 September for an unheated greenhouse); seed for raising your own is sown from 25 February to 17 August. Within 15 km of Gaziantep OpenStreetMap lists 6 markets and 1 farm shop (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions

When to plant watermelons in Gaziantep?

In Gaziantep, watermelon: sow for seedlings from 25 February to 17 August; plant into a greenhouse from 25 March to 14 September; plant out into open ground from 15 April to 14 September.

When to sow watermelons for seedlings in Gaziantep?

Sow for seedlings from 25 February to 17 August.

When is the last spring frost in Gaziantep?

Last spring frost around 22 February, first autumn frost around 24 December.

Other crops in Gaziantep, with their dates