When to plant watermelons in Kilkenny: 15 July – 11 August

In Kilkenny, watermelon: sow for seedlings from 27 May to 14 July; plant into a greenhouse from 24 June to 11 August; plant out into open ground from 15 July to 11 August. For plants and seeds, the places nearby include Farm & Industrial Supplies (farm supply, 3 km) and Tirlán Farmlife (farm shop, 13 km); addresses and opening hours are below.

Watermelon in Kilkenny: soil, season and weather

In Kilkenny the soil, not frost, sets the date: the last frost is over around 7 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 15 July, 99 days later.

Last spring frost	7 April
Top 7 cm of soil at 18 °C	15 July, 99 days after the last frost
Into an unheated greenhouse	24 June – 11 August; June outside: 10.2 °C at night, 17.7 °C by day; card 18–35 °C
First autumn frost	20 November, 128 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	12 September – 9 October
Days left for picking	69
Daylight	16:51 on 17 June, 16:24 on 15 July
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 15 rainy days

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

Watermelon in Kilkenny: care after planting

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

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

15 July — 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 Kilkenny during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 18.9 °C. Months that stay below 18 °C even by day on average: September (16.2 °C), October (13.1 °C) and November (9.5 °C). Nights average below 18 °C in every month of the season, from 4.6 °C to 11.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
July	18.9	11.8	81	15	16:24
August	18.6	11.5	90	15	14:46
September	16.2	9.8	99	14	12:44
October	13.1	7.5	113	15	10:42
November	9.5	4.6	97	15	8:46

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Kilkenny, Waterford is 17 days earlier and Dublin 1 day later.

City	Distance	Date	Difference
Waterford	44 km	28 June – 11 August	17 days earlier
Limerick	93 km	6 July – 12 August	9 days earlier
Athlone	97 km	13 July – 17 August	2 days earlier
Dublin	102 km	16 July – 15 August	1 day later
Cork	118 km	15 July – 12 August	same day
Galway	139 km	13 July – 19 August	2 days earlier

Where to buy watermelon plants and seeds near Kilkenny

Buy plants ready to set out from 15 July to 11 August (from 24 June to 11 August for an unheated greenhouse); seed for raising your own is sown from 27 May to 14 July. Within 15 km of Kilkenny OpenStreetMap lists 5 garden centres, 12 farm-supply shops and 5 farm shops (collected 20 October 2026).

Farm & Industrial Supplies — farm supply
Mon–Fri 09:00–13:00, 14:00–18:00; Sat 09:00–13:00 · 3 km
Tirlán Farmlife — farm supply
Mon–Fri 09:30–17:30; Sat 09:00–13:00 · 14 km
Tirlán Farmlife — farm shop
Mon–Fri 09:00–13:00, 14:00–17:30 · 13 km · tirlanfarmlife.com
Skehana Hill Farm Shop — farm shop
The Fowl Market 2 · Fri 12:00–19:00; Sat 10:00–14:00 · 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.

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