When to plant watermelons in Tralee: 26 June – 13 August

In Tralee, watermelon: sow for seedlings from 8 May to 16 July; plant into a greenhouse from 5 June to 13 August; plant out into open ground from 26 June to 13 August.

Watermelon in Tralee: soil, season and weather

In Tralee the soil, not frost, sets the date: the last frost is over around 23 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 26 June, 95 days later.

Last spring frost	23 March
Top 7 cm of soil at 18 °C	26 June, 95 days after the last frost
Into an unheated greenhouse	5 June – 13 August; June outside: 11 °C at night, 17 °C by day; card 18–35 °C
First autumn frost	22 November, 149 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	24 August – 11 October
Days left for picking	90
Daylight	16:20 on 29 May, 16:46 on 26 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, June, has 19 rainy days

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

Watermelon in Tralee: care after planting

Planted on 26 June: in the first weeks water every 5 days.

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

26 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 Tralee during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 18.2 °C. Months that stay below 18 °C even by day on average: June and September–November (10.8–17 °C). Nights average below 18 °C in every month of the season, from 6.1 °C to 12.7 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	17	11	99	19	16:45
July	18.1	12.5	116	19	16:20
August	18.2	12.7	142	21	14:44
September	16.6	10.9	125	20	12:44
October	13.8	8.9	141	19	10:43
November	10.8	6.1	145	19	8:49

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon later than Tralee; the closest date is in Waterford, 2 days later.

City	Distance	Date	Difference
Limerick	84 km	6 July – 12 August	10 days later
Cork	94 km	15 July – 12 August	19 days later
Galway	119 km	13 July – 19 August	17 days later
Kilkenny	171 km	15 July – 11 August	19 days later
Athlone	174 km	13 July – 17 August	17 days later
Waterford	176 km	28 June – 11 August	2 days later

Where to buy watermelon plants and seeds near Tralee

Buy plants ready to set out from 26 June to 13 August (from 5 June to 13 August for an unheated greenhouse); seed for raising your own is sown from 8 May to 16 July. Within 15 km of Tralee OpenStreetMap lists 2 garden centres, 3 farm-supply shops, 1 plant nursery and 1 farm shop (collected 28 October 2026).

Kingdom Garden Centre — garden centre
5 km
Kellihers Feeds & Agricultural Supplies Limited — farm supply
1 km · kfa.ie
Nolans Tralee — farm supply
1 km
Deelis Farm Shop — farm shop
15 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