When to plant watermelons in Lorca: 18 April – 5 September

In Lorca, watermelon: sow for seedlings from 28 February to 8 August; plant into a greenhouse from 28 March to 5 September; plant out into open ground from 18 April to 5 September.

Watermelon in Lorca: soil, season and weather

In Lorca the soil, not frost, sets the date: the last frost is over around 20 January, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 18 April, 88 days later.

Last spring frost	20 January
Top 7 cm of soil at 18 °C	18 April, 88 days after the last frost
Into an unheated greenhouse	28 March – 5 September; March outside: 6.8 °C at night, 18.4 °C by day; card 18–35 °C
First autumn frost	15 December, 241 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	16 June – 3 November
Days left for picking	182
Daylight	12:09 on 21 March, 13:16 on 18 April
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 1 rainy day

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

Watermelon in Lorca: care after planting

Planted on 18 April: in the first weeks water every 5 days.

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

18 April — 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 Lorca during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 34.1 °C. Months that stay below 18 °C even by day on average: December (16 °C). Nights average below 18 °C in April–June and September–December (5.3–17.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	20.9	9.1	42	7	13:09
May	25.3	12.7	32	5	14:11
June	30.5	17.2	13	3	14:45
July	34.1	20.1	3	1	14:32
August	33.6	20.2	10	2	13:39
September	28.5	16.8	54	6	12:28
October	24.5	12.9	38	5	11:16
November	18.8	7.9	30	5	10:10
December	16	5.3	32	4	9:35

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Lorca, Elche is 9 days earlier and Granada 43 days later.

City	Distance	Date	Difference
Murcia	61 km	from 16 April	2 days earlier
Elche	109 km	from 9 April	9 days earlier
Albacete	146 km	12 May – 17 August	24 days later
Úbeda	151 km	7 May – 24 August	19 days later
Granada	177 km	31 May – 17 August	43 days later
Jaén	184 km	26 April – 7 September	8 days later

Where to buy watermelon plants and seeds near Lorca

Buy plants ready to set out from 18 April to 5 September (from 28 March to 5 September for an unheated greenhouse); seed for raising your own is sown from 28 February to 8 August. Within 15 km of Lorca OpenStreetMap lists 1 plant nursery (collected 28 October 2026).

Semillero HOYAMAR — plant nursery
11 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