When to plant watermelons in Cáceres: 8 May – 14 September

In Cáceres, watermelon: sow for seedlings from 20 March to 17 August; plant into a greenhouse from 17 April to 14 September; plant out into open ground from 8 May to 14 September.

Watermelon in Cáceres: soil, season and weather

In Cáceres the soil, not frost, sets the date: the last frost is over around 21 January, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 8 May, 107 days later.

Last spring frost	21 January
Top 7 cm of soil at 18 °C	8 May, 107 days after the last frost
Into an unheated greenhouse	17 April – 14 September; April outside: 9.1 °C at night, 19.9 °C by day; card 18–35 °C
First autumn frost	24 December, 230 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	6 July – 12 November
Days left for picking	171
Daylight	13:01 on 10 April, 14:06 on 8 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, August, has 1 rainy day

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

Watermelon in Cáceres: care after planting

Planted on 8 May: in the first weeks water every 5 days.

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

8 May — 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 Cáceres during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 34.3 °C. Months that stay below 18 °C even by day on average: November (16.2 °C) and December (13.4 °C). Nights average below 18 °C in May, June and September–December (5.3–16.6 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	24.6	12.6	34	5	14:20
June	29.6	16.6	15	3	14:56
July	34	19.6	4	1	14:42
August	34.3	20.1	3	1	13:45
September	28.5	16.4	32	4	12:29
October	23.7	13.2	73	8	11:13
November	16.2	8	68	10	10:02
December	13.4	5.3	63	8	9:24

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Cáceres, Castelo Branco is 8 days earlier and Guarda 20 days later.

City	Distance	Date	Difference
Mérida (Spain)	62 km	4 May – 9 September	4 days earlier
Plasencia	66 km	8 May – 20 September	same day
Badajoz	84 km	3 May – 6 September	5 days earlier
Castelo Branco	103 km	30 April – 16 September	8 days earlier
Guarda	141 km	28 May – 16 August	20 days later
Talavera de la Reina	143 km	9 May – 8 September	1 day later

Where to buy watermelon plants and seeds near Cáceres

Buy plants ready to set out from 8 May to 14 September (from 17 April to 14 September for an unheated greenhouse); seed for raising your own is sown from 20 March to 17 August. Within 15 km of Cáceres OpenStreetMap lists 4 garden centres and 1 market (collected 27 October 2026).

Mercado de Abastos — market
1 km
Centro de Jardinería Sara — garden centre
7 km
Centro de Jardineria Top Campo — garden centre
9 km
Top Campo — garden centre
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.

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