When to plant watermelons in Limerick: 6 July – 12 August

In Limerick, watermelon: sow for seedlings from 18 May to 15 July; plant into a greenhouse from 15 June to 12 August; plant out into open ground from 6 July to 12 August.

Watermelon in Limerick: soil, season and weather

In Limerick 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 6 July, 115 days later.

Last spring frost	13 March
Top 7 cm of soil at 18 °C	6 July, 115 days after the last frost
Into an unheated greenhouse	15 June – 12 August; June outside: 10.9 °C at night, 17.9 °C by day; card 18–35 °C
First autumn frost	21 November, 138 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	3 September – 10 October
Days left for picking	79
Daylight	16:42 on 8 June, 16:41 on 6 July
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 17 rainy days

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

Watermelon in Limerick: care after planting

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

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

6 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 Limerick 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 (16.7 °C), October (13.8 °C) and November (10.4 °C). Nights average below 18 °C in every month of the season, from 5.6 °C to 12.4 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
July	18.9	12.4	110	17	16:24
August	18.7	12.4	123	20	14:46
September	16.7	10.6	121	17	12:44
October	13.8	8.4	134	19	10:42
November	10.4	5.6	123	17	8:46

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Limerick, Tralee is 10 days earlier and Cork 9 days later.

City	Distance	Date	Difference
Galway	73 km	13 July – 19 August	7 days later
Tralee	84 km	26 June – 13 August	10 days earlier
Cork	85 km	15 July – 12 August	9 days later
Kilkenny	93 km	15 July – 11 August	9 days later
Athlone	96 km	13 July – 17 August	7 days later
Waterford	112 km	28 June – 11 August	8 days earlier

Where to buy watermelon plants and seeds near Limerick

Buy plants ready to set out from 6 July to 12 August (from 15 June to 12 August for an unheated greenhouse); seed for raising your own is sown from 18 May to 15 July. Within 15 km of Limerick OpenStreetMap lists 5 garden centres, 1 farm-supply shop, 3 markets and 1 farm shop (collected 20 October 2026).

Enable Ireland Garden Centre — garden centre
1 km
Community Garden — garden centre
1 km
Grove View Garden Centre — garden centre
7 km
Dan O Connor Farm Feeds — farm supply
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