When to plant watermelons in Gyumri: 11 June – 11 July

In Gyumri, watermelon: sow for seedlings from 23 April to 13 June; plant into a greenhouse from 21 May to 11 July; plant out into open ground from 11 June to 11 July.

Watermelon in Gyumri: soil, season and weather

In Gyumri the soil, not frost, sets the date: the last frost is over around 27 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 11 June, 45 days later.

Last spring frost	27 April
Top 7 cm of soil at 18 °C	11 June, 45 days after the last frost
Into an unheated greenhouse	21 May – 11 July; May outside: 5.2 °C at night, 19 °C by day; card 18–35 °C
First autumn frost	20 October, 131 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	9 August – 8 September
Days left for picking	72
Daylight	14:24 on 14 May, 15:03 on 11 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, August, has 6 rainy days

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

Watermelon in Gyumri: care after planting

Planted on 11 June: in the first weeks water every 5 days.

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

11 June — 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 Gyumri during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 28.7 °C. Months that stay below 18 °C even by day on average: October (16.9 °C). Nights average below 18 °C in every month of the season, from 2.9 °C to 14.6 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	24.3	10.2	59	12	15:05
July	27.5	13.9	33	8	14:50
August	28.7	14.6	20	6	13:50
September	24	9.3	29	6	12:31
October	16.9	2.9	55	7	11:10

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon earlier than Gyumri; the closest date is in Yerevan, 13 days earlier.

City	Distance	Date	Difference
Vanadzor	54 km	23 May – 16 June	19 days earlier
Yerevan	88 km	29 May – 24 July	13 days earlier
Tbilisi	130 km	24 May – 6 August	18 days earlier
Kutaisi	190 km	23 May – 10 September	19 days earlier
Batumi	208 km	13 May – 3 September	29 days earlier
Ganja	212 km	30 April – 1 September	42 days earlier

Where to buy watermelon plants and seeds near Gyumri

Buy plants ready to set out from 11 June to 11 July (from 21 May to 11 July for an unheated greenhouse); seed for raising your own is sown from 23 April to 13 June. Within 15 km of Gyumri OpenStreetMap lists 6 markets (collected 27 October 2026).

Aida's Market — market
Լազո փողոց, Գյումրի · 2 km
Market — market
1 km
Gyumri Central Market — market
1 km
Գյումրու Շուկա — market
1 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