When to plant watermelons in Pisa: 16 June – 9 August

In Pisa, watermelon: sow for seedlings from 28 April to 12 July; plant into a greenhouse from 26 May to 9 August; plant out into open ground from 16 June to 9 August. For plants and seeds, the places nearby include Terre dell'Etruria (farm supply, 7 km) and Il Giardino (garden centre, 7 km); addresses and opening hours are below.

Watermelon in Pisa: soil, season and weather

In Pisa the soil, not frost, sets the date: the last frost is over around 9 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 16 June, 68 days later.

Last spring frost	9 April
Top 7 cm of soil at 18 °C	16 June, 68 days after the last frost
Into an unheated greenhouse	26 May – 9 August; May outside: 7.9 °C at night, 17.7 °C by day; card 18–35 °C
First autumn frost	18 November, 155 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	14 August – 7 October
Days left for picking	96
Daylight	14:51 on 19 May, 15:26 on 16 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 5 rainy days

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

Watermelon in Pisa: care after planting

Planted on 16 June: in the first weeks water every 5 days.

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

16 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 Pisa during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 26.7 °C. Months that stay below 18 °C even by day on average: October (17.1 °C) and November (11.3 °C). Nights average below 18 °C in every month of the season, from 2.9 °C to 15 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	23	12.5	65	8	15:26
July	25.9	14.9	31	5	15:09
August	26.7	15	70	7	14:01
September	21.9	11.3	143	11	12:33
October	17.1	7.6	169	12	11:04
November	11.3	2.9	177	14	9:42

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon earlier than Pisa; the closest date is in Florence, 19 days earlier.

City	Distance	Date	Difference
Livorno	20 km	from 16 May	31 days earlier
Florence	69 km	28 May – 18 August	19 days earlier
Siena	87 km	26 May – 18 August	21 days earlier
Modena	113 km	14 May – 21 August	33 days earlier
Bologna	115 km	16 May – 20 August	31 days earlier
Parma	121 km	19 May – 20 August	28 days earlier

Where to buy watermelon plants and seeds near Pisa

Buy plants ready to set out from 16 June to 9 August (from 26 May to 9 August for an unheated greenhouse); seed for raising your own is sown from 28 April to 12 July. Within 15 km of Pisa OpenStreetMap lists 12 garden centres, 9 farm-supply shops and 1 farm shop (collected 27 October 2026).

Il Giardino — garden centre
Via Camilla Ravera 121 · 7 km
Agrimacchine Burba — farm supply
Via di Bracciolo 3, 56019 Vecchiano · Mon–Fri 08:30–12:30, 15:00–19:00; Sat 09:00–13:00 · 9 km · agrimacchineburba.it
Terre dell'Etruria — farm supply
Via Filippo Turati 35, 56017 San Giuliano Terme · 7 km · terretruria.it
Consorzio agrario provinciale di Pisa — farm supply
Via Roma 12, 56019 Pisa · 8 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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