When to plant watermelons in Ponferrada: 1 June – 18 August

In Ponferrada, watermelon: sow for seedlings from 13 April to 21 July; plant into a greenhouse from 11 May to 18 August; plant out into open ground from 1 June to 18 August.

Watermelon in Ponferrada: soil, season and weather

In Ponferrada the soil, not frost, sets the date: the last frost is over around 3 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 1 June, 59 days later.

Last spring frost	3 April
Top 7 cm of soil at 18 °C	1 June, 59 days after the last frost
Into an unheated greenhouse	11 May – 18 August; May outside: 8 °C at night, 18.6 °C by day; card 18–35 °C
First autumn frost	27 November, 179 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	30 July – 16 October
Days left for picking	120
Daylight	14:11 on 4 May, 15:05 on 1 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, August, has 4 rainy days

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

Watermelon in Ponferrada: care after planting

Planted on 1 June: in the first weeks water every 5 days.

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

1 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 Ponferrada during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 27.6 °C. Months that stay below 18 °C even by day on average: November (11.5 °C). Nights average below 18 °C in every month of the season, from 4.4 °C to 14.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.6	11.8	76	11	15:17
July	27.2	14.5	15	4	15:01
August	27.6	14.8	14	4	13:57
September	22.6	11.6	43	7	12:32
October	18.2	8.9	93	12	11:07
November	11.5	4.4	128	14	9:47

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Ponferrada, León (Spain) is 7 days earlier and Oviedo 18 days later.

City	Distance	Date	Difference
Bragança	83 km	29 May – 17 August	3 days earlier
León (Spain)	84 km	25 May – 30 July	7 days earlier
Lugo	94 km	1 June – 25 August	same day
Ourense	107 km	1 June – 24 August	same day
Oviedo	108 km	19 June – 27 August	18 days later
Gijón	134 km	11 June – 7 September	10 days later

Where to buy watermelon plants and seeds near Ponferrada

Buy plants ready to set out from 1 June to 18 August (from 11 May to 18 August for an unheated greenhouse); seed for raising your own is sown from 13 April to 21 July. Within 15 km of Ponferrada OpenStreetMap lists 2 markets (collected 28 October 2026).

Plaza de Abastos — market
Calle Alfonso X el Sabio, 24402 Ponferrada · Mon–Sat 07:00–14:30, 16:30–21:30 · 1 km · ponferrada.org
Mercado de Abastos — market
12 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