When to plant watermelons in Jerez de la Frontera: from 18 April

In Jerez de la Frontera, watermelon: sow for seedlings from 28 February; plant into a greenhouse from 28 March; plant out into open ground from 18 April. There is no autumn frost here, so the frost dates set no end to the window.

Watermelon in Jerez de la Frontera: soil, season and weather

In Jerez de la Frontera the soil, not frost, sets the date: the last frost is over around 16 January, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 18 April, 92 days later. Jerez de la Frontera has no autumn frost in the median year, so frost does not end the season.

Last spring frost	16 January
Top 7 cm of soil at 18 °C	18 April, 92 days after the last frost
Into an unheated greenhouse	from 28 March; March outside: 9.5 °C at night, 19.4 °C by day; card 18–35 °C
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	from 16 June
Daylight	12:09 on 21 March, 13:13 on 18 April
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 0 rainy days

The same dates in Jerez de la Frontera hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Jerez de la Frontera: 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 Jerez de la Frontera during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 33.6 °C. Nights average below 18 °C in April (11.7 °C), May (14.6 °C) and June (17.8 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
April	21.9	11.7	50	7	13:07
May	25.9	14.6	34	5	14:07
June	29.2	17.8	10	2	14:39
July	32.5	20.1	1	0	14:27
August	33.6	20.7	2	1	13:35
September	29.9	18.4	18	3	12:27

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Jerez de la Frontera, Seville is 16 days earlier and Granada 43 days later.

City	Distance	Date	Difference
Seville	79 km	from 2 April	16 days earlier
Écija	133 km	9 April – 18 September	9 days earlier
Córdoba (Spain)	180 km	21 April – 18 September	3 days later
Beja	211 km	17 April – 18 September	1 day earlier
Granada	232 km	31 May – 17 August	43 days later
Jaén	240 km	26 April – 7 September	8 days later

Where to buy watermelon plants and seeds near Jerez de la Frontera

Buy plants ready to set out from 18 April (from 28 March for an unheated greenhouse); seed for raising your own is sown from 28 February. Within 15 km of Jerez de la Frontera OpenStreetMap lists 1 plant nursery and 4 markets (collected 27 October 2026).

Mercado de la Concepción — market
13 km
Vivero El Lago — plant nursery
10 km
Mercado de Abasto de La Plata — market
0 km
Mercado Central de Abastos — market
1 km

Questions