When to plant watermelons in Segovia: 1 June – 30 July

In Segovia, watermelon: sow for seedlings from 13 April to 2 July; plant into a greenhouse from 11 May to 30 July; plant out into open ground from 1 June to 30 July. For plants and seeds, the places nearby include Viveros Madrona (plant nursery, 8 km); addresses and opening hours are below.

Watermelon in Segovia: soil, season and weather

In Segovia the soil, not frost, sets the date: the last frost is over around 19 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 1 June, 43 days later.

Last spring frost	19 April
Top 7 cm of soil at 18 °C	1 June, 43 days after the last frost
Into an unheated greenhouse	11 May – 30 July; May outside: 7.5 °C at night, 17.5 °C by day; card 18–35 °C
First autumn frost	8 November, 160 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	30 July – 27 September
Days left for picking	101
Daylight	14:04 on 4 May, 14:55 on 1 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, August, has 3 rainy days

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

Watermelon in Segovia: 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 Segovia 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: October (17.1 °C) and November (9.8 °C). Nights average below 18 °C in every month of the season, from 3.3 °C to 16.1 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	22.9	12.2	52	9	15:06
July	27.5	15.5	9	2	14:51
August	27.6	16.1	8	3	13:50
September	21.5	11.6	36	6	12:31
October	17.1	8.6	89	11	11:10
November	9.8	3.3	123	15	9:55

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon earlier than Segovia; the closest date is in Ávila, 1 day earlier.

City	Distance	Date	Difference
Ávila	59 km	31 May – 8 August	1 day earlier
Madrid	69 km	14 May – 18 August	18 days earlier
Aranda de Duero	88 km	31 May – 4 August	1 day earlier
Guadalajara (Spain)	88 km	17 May – 15 August	15 days earlier
Valladolid	93 km	15 May – 18 August	17 days earlier
Toledo	121 km	11 May – 27 August	21 days earlier

Where to buy watermelon plants and seeds near Segovia

Buy plants ready to set out from 1 June to 30 July (from 11 May to 30 July for an unheated greenhouse); seed for raising your own is sown from 13 April to 2 July. Within 15 km of Segovia OpenStreetMap lists 1 garden centre, 1 farm-supply shop, 5 plant nurseries, 5 markets and 1 farm shop (collected 27 October 2026).

Mercado Municipal — market
11 km
Fruteria del Hilario — farm shop
0 km
Viveros Madrona — plant nursery
Carretera de Madrona a Riofrío por La Losa 17, 40154 Madrona · 8 km · viverosmadrona.com
Mercado de Los Huertos — market
Calle Ildefonso Rodríguez 2, 40001 Segovia · 0 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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