When to plant watermelons in Irpin: 6 June – 13 July

In Irpin, watermelon: sow for seedlings from 18 April to 15 June; plant into a greenhouse from 16 May to 13 July; plant out into open ground from 6 June to 13 July.

Watermelon in Irpin: soil, season and weather

In Irpin the soil, not frost, sets the date: the last frost is over around 11 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 6 June, 56 days later.

Last spring frost	11 April
Top 7 cm of soil at 18 °C	6 June, 56 days after the last frost
Into an unheated greenhouse	16 May – 13 July; May outside: 9.2 °C at night, 19.6 °C by day; card 18–35 °C
First autumn frost	22 October, 138 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	4 August – 10 September
Days left for picking	79
Daylight	15:09 on 9 May, 16:16 on 6 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 8 rainy days

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

Watermelon in Irpin: care after planting

Planted on 6 June: in the first weeks water every 5 days.

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

6 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 Irpin during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 26.2 °C. Months that stay below 18 °C even by day on average: October (13.4 °C). Nights average below 18 °C in every month of the season, from 5.9 °C to 16 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	25.3	14.9	63	10	16:26
July	26.2	16	81	11	16:03
August	26.1	15.4	42	7	14:34
September	20.8	11	37	8	12:41
October	13.4	5.9	55	9	10:48

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon earlier than Irpin; the closest date is in Bila Tserkva, 3 days earlier.

City	Distance	Date	Difference
Kyiv	21 km	30 May – 31 July	7 days earlier
Brovary	39 km	31 May – 31 July	6 days earlier
Boryspil	54 km	31 May – 21 July	6 days earlier
Fastiv	54 km	31 May – 13 July	6 days earlier
Bila Tserkva	81 km	3 June – 21 July	3 days earlier
Zhytomyr	116 km	1 June – 11 July	5 days earlier

Where to buy watermelon plants and seeds near Irpin

Buy plants ready to set out from 6 June to 13 July (from 16 May to 13 July for an unheated greenhouse); seed for raising your own is sown from 18 April to 15 June. Within 15 km of Irpin OpenStreetMap lists 5 garden centres, 1 farm-supply shop, 4 plant nurseries, 21 markets and 8 farm shops (collected 28 October 2026).

Ринок «Нивки» — market
13 km
М'ясний, молочний павільйон — market
13 km
Борщагівський ринок — market
13 km
Ринок — market
14 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