When to plant watermelons in Diyarbakır: 1 May – 16 August

In Diyarbakır, watermelon: sow for seedlings from 13 March to 19 July; plant into a greenhouse from 10 April to 16 August; plant out into open ground from 1 May to 16 August.

Watermelon in Diyarbakır: soil, season and weather

In Diyarbakır the soil, not frost, sets the date: the last frost is over around 22 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 1 May, 40 days later.

Last spring frost	22 March
Top 7 cm of soil at 18 °C	1 May, 40 days after the last frost
Into an unheated greenhouse	10 April – 16 August; April outside: 7.7 °C at night, 21.2 °C by day; card 18–35 °C
First autumn frost	25 November, 208 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	29 June – 14 October
Days left for picking	149
Daylight	12:41 on 3 April, 13:45 on 1 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 0 rainy days

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

Watermelon in Diyarbakır: care after planting

Planted on 1 May: in the first weeks water every 5 days.

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

1 May — 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 Diyarbakır during the watermelon season

Days average above the watermelon card's 18–35 °C in July (38.8 °C) and August (39.1 °C). Months that stay below 18 °C even by day on average: November (16.9 °C). Nights average below 18 °C in May (12.3 °C), October (11.6 °C) and November (4.8 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	26.4	12.3	62	9	14:12
June	34.3	18.8	4	1	14:47
July	38.8	23.4	0	0	14:33
August	39.1	23	0	0	13:39
September	33.9	18	2	1	12:28
October	26.1	11.6	38	4	11:16
November	16.9	4.8	62	7	10:09

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Diyarbakır, Gaziantep is 16 days earlier and Erzurum 41 days later.

City	Distance	Date	Difference
Erzurum	240 km	11 June – 7 July	41 days later
Gaziantep	269 km	15 April – 14 September	16 days earlier
Van	282 km	5 June – 20 July	35 days later
Trabzon	348 km	5 May – 3 September	4 days later
Kayseri	424 km	20 May – 1 August	19 days later
Batumi	432 km	13 May – 3 September	12 days later

Where to buy watermelon plants and seeds near Diyarbakır

Buy plants ready to set out from 1 May to 16 August (from 10 April to 16 August for an unheated greenhouse); seed for raising your own is sown from 13 March to 19 July. Within 15 km of Diyarbakır OpenStreetMap lists 4 markets (collected 28 October 2026).

Turgut Özal Yeraltı Çarşısı — market
0 km
Kapalı Pazar Yeri — market
12 km
Selahadini Eyübi Çarşısı — market
1 km
Diyarbakır Açık Oto Pazarı — market
9 km

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