When to plant watermelons in Trabzon: 5 May – 3 September

In Trabzon, watermelon: sow for seedlings from 17 March to 6 August; plant into a greenhouse from 14 April to 3 September; plant out into open ground from 5 May to 3 September.

Watermelon in Trabzon: soil, season and weather

In Trabzon the soil, not frost, sets the date: the last frost is over around 13 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 5 May, 53 days later.

Last spring frost	13 March
Top 7 cm of soil at 18 °C	5 May, 53 days after the last frost
Into an unheated greenhouse	14 April – 3 September; April outside: 9.3 °C at night, 17.3 °C by day; card 18–35 °C
First autumn frost	13 December, 222 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	3 July – 1 November
Days left for picking	163
Daylight	12:56 on 7 April, 14:06 on 5 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, November, has 10 rainy days

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

Watermelon in Trabzon: care after planting

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

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

5 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 Trabzon during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 26.8 °C. Months that stay below 18 °C even by day on average: November (17.5 °C) and December (13.7 °C). Nights average below 18 °C in May and October–December (6.3–13.9 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.2	13.1	102	14	14:28
June	24	18	99	15	15:06
July	26	20.6	101	17	14:51
August	26.8	21.6	90	17	13:51
September	24.2	18.2	128	16	12:31
October	20.6	13.9	119	14	11:10
November	17.5	9.6	78	10	9:55
December	13.7	6.3	85	11	9:15

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Trabzon, Diyarbakır is 4 days earlier and Erzurum 37 days later.

City	Distance	Date	Difference
Batumi	175 km	13 May – 3 September	8 days later
Erzurum	180 km	11 June – 7 July	37 days later
Kutaisi	284 km	23 May – 10 September	18 days later
Samsun	286 km	24 May – 6 September	19 days later
Sochi	288 km	21 May – 4 September	16 days later
Diyarbakır	348 km	1 May – 16 August	4 days earlier

Where to buy watermelon plants and seeds near Trabzon

Buy plants ready to set out from 5 May to 3 September (from 14 April to 3 September for an unheated greenhouse); seed for raising your own is sown from 17 March to 6 August. Within 15 km of Trabzon OpenStreetMap lists 1 garden centre, 21 markets and 1 farm shop (collected 28 October 2026).

Ayasofya Pazarı — market
Sat · 3 km
Kuruçeşme Pazarı — market
Mon · 3 km
Aydınlıkevler Pazarı — market
Thu · 3 km
Değirmendere Pazarı — market
Mon · 3 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