When to plant watermelons in Ancona: 10 May – 1 September

In Ancona, watermelon: sow for seedlings from 22 March to 4 August; plant into a greenhouse from 19 April to 1 September; plant out into open ground from 10 May to 1 September. For plants and seeds, the places nearby include Consorzio Agrario Provinciale Ancona (farm supply, 2 km) and Ciavattini Garden (garden centre, 7 km); addresses and opening hours are below.

Watermelon in Ancona: soil, season and weather

In Ancona the soil, not frost, sets the date: the last frost is over around 16 February, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 10 May, 83 days later.

Last spring frost	16 February
Top 7 cm of soil at 18 °C	10 May, 83 days after the last frost
Into an unheated greenhouse	19 April – 1 September; April outside: 8.4 °C at night, 17.7 °C by day; card 18–35 °C
First autumn frost	11 December, 215 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	8 July – 30 October
Days left for picking	156
Daylight	13:16 on 12 April, 14:30 on 10 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 6 rainy days

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

Watermelon in Ancona: care after planting

Planted on 10 May: in the first weeks water every 5 days.

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

10 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 Ancona during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 30.4 °C. Months that stay below 18 °C even by day on average: November (15.6 °C) and December (12.1 °C). Nights average below 18 °C in May and September–December (4.5–16.2 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.8	12.9	86	12	14:42
June	27.9	18.2	44	6	15:25
July	30.4	20.3	40	6	15:08
August	30.3	20.4	44	6	14:01
September	25.4	16.2	76	9	12:33
October	20.9	12.3	61	8	11:05
November	15.6	8.1	86	11	9:42
December	12.1	4.5	68	9	8:58

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Ancona, Pescara is 2 days earlier and Arezzo 30 days later.

City	Distance	Date	Difference
Rimini	91 km	16 May – 2 September	6 days later
San Marino	93 km	16 May – 2 September	6 days later
Perugia	108 km	29 May – 16 August	19 days later
Arezzo	133 km	9 June – 12 August	30 days later
Ravenna	137 km	15 May – 2 September	5 days later
Pescara	140 km	8 May – 31 August	2 days earlier

Where to buy watermelon plants and seeds near Ancona

Buy plants ready to set out from 10 May to 1 September (from 19 April to 1 September for an unheated greenhouse); seed for raising your own is sown from 22 March to 4 August. Within 15 km of Ancona OpenStreetMap lists 2 garden centres, 1 farm-supply shop and 5 markets (collected 27 October 2026).

Ciavattini Garden — garden centre
Strada Frazione Varano 279, 60131 Ancona · 7 km · ciavattinigarden.it
Garden Claudia — garden centre
Via Clementina 19 · 13 km
Consorzio Agrario Provinciale Ancona — farm supply
Via Loreto 15, 60126 Ancona · 2 km
Mercato delle Erbe — market
07:30–12:45, 16:30–19:30; Mar Sun[–1]–Oct Sun[–1]: 07:30–12:45, 17:00–20:00; Sun closed · 1 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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