When to plant watermelons in Badajoz: 3 May – 6 September

In Badajoz, watermelon: sow for seedlings from 15 March to 9 August; plant into a greenhouse from 12 April to 6 September; plant out into open ground from 3 May to 6 September.

Watermelon in Badajoz: soil, season and weather

In Badajoz the soil, not frost, sets the date: the last frost is over around 19 January, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 3 May, 104 days later.

Last spring frost	19 January
Top 7 cm of soil at 18 °C	3 May, 104 days after the last frost
Into an unheated greenhouse	12 April – 6 September; April outside: 9.7 °C at night, 21.1 °C by day; card 18–35 °C
First autumn frost	16 December, 227 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	1 July – 4 November
Days left for picking	168
Daylight	12:47 on 5 April, 13:53 on 3 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 1 rainy day

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

Watermelon in Badajoz: care after planting

Planted on 3 May: in the first weeks water every 5 days.

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

3 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 Badajoz during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 34.9 °C. Months that stay below 18 °C even by day on average: November (17.7 °C) and December (14.7 °C). Nights average below 18 °C in May, June and September–December (6.1–16.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	25.6	13	31	5	14:17
June	30.2	16.4	12	3	14:53
July	34.5	18.9	2	1	14:39
August	34.9	19.3	3	1	13:43
September	29.7	16.7	27	3	12:29
October	25	13.7	74	8	11:14
November	17.7	8.8	64	9	10:05
December	14.7	6.1	65	8	9:28

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Badajoz, Beja is 16 days earlier and Cáceres 5 days later.

City	Distance	Date	Difference
Mérida (Spain)	56 km	4 May – 9 September	1 day later
Cáceres	84 km	8 May – 14 September	5 days later
Évora	89 km	from 5 May	2 days later
Castelo Branco	114 km	30 April – 16 September	3 days earlier
Beja	124 km	17 April – 18 September	16 days earlier
Plasencia	149 km	8 May – 20 September	5 days later

Where to buy watermelon plants and seeds near Badajoz

Buy plants ready to set out from 3 May to 6 September (from 12 April to 6 September for an unheated greenhouse); seed for raising your own is sown from 15 March to 9 August. Within 15 km of Badajoz OpenStreetMap lists 1 garden centre, 1 farm-supply shop and 1 market (collected 27 October 2026).

Mercadillo — market
Tue 09:00–13:00 · 2 km
Maluca Garden — garden centre
4 km · malucagarden.es
Fertiprado Lda. — farm supply
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