When to plant watermelons in Udine: 23 May – 13 August

In Udine, watermelon: sow for seedlings from 4 April to 16 July; plant into a greenhouse from 2 May to 13 August; plant out into open ground from 23 May to 13 August. For plants and seeds, the places nearby include L'Orto Felice (farm shop, 3 km) and Azienda Agricola Mansutti (farm shop, 4 km); addresses and opening hours are below.

Watermelon in Udine: soil, season and weather

In Udine the soil, not frost, sets the date: the last frost is over around 25 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 23 May, 59 days later.

Last spring frost	25 March
Top 7 cm of soil at 18 °C	23 May, 59 days after the last frost
Into an unheated greenhouse	2 May – 13 August; May outside: 11.6 °C at night, 21.4 °C by day; card 18–35 °C
First autumn frost	22 November, 183 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	21 July – 11 October
Days left for picking	124
Daylight	14:02 on 25 April, 15:14 on 23 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 11 rainy days

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

Watermelon in Udine: care after planting

Planted on 23 May: in the first weeks water every 5 days.

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

23 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 Udine during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 29.4 °C. Months that stay below 18 °C even by day on average: November (13.3 °C). Nights average below 18 °C in May, June and September–November (4.9–16.7 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	21.4	11.6	192	16	14:56
June	27.2	16.7	125	12	15:44
July	29.3	18.3	103	11	15:25
August	29.4	18.4	143	10	14:12
September	24.2	14.3	212	13	12:36
October	19.1	9.9	166	12	10:59
November	13.3	4.9	185	11	9:29

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Udine, Padua is 8 days earlier and Klagenfurt 41 days later.

City	Distance	Date	Difference
Trieste	63 km	5 June – 19 August	13 days later
Treviso	89 km	19 May – 14 August	4 days earlier
Venice	99 km	16 May – 27 August	7 days earlier
Klagenfurt	102 km	3 July – 27 July	41 days later
Padua	129 km	15 May – 19 August	8 days earlier
Vicenza	143 km	24 May – 15 August	1 day later

Where to buy watermelon plants and seeds near Udine

Buy plants ready to set out from 23 May to 13 August (from 2 May to 13 August for an unheated greenhouse); seed for raising your own is sown from 4 April to 16 July. Within 15 km of Udine OpenStreetMap lists 16 garden centres, 2 farm-supply shops, 4 plant nurseries, 6 markets and 18 farm shops (collected 27 October 2026).

L'Orto Felice — farm shop
Via dei Carlini 31, 33100 · 3 km
Azienda Agricola Mansutti — farm shop
Via Liguria 198, Udine · 4 km
Azienda Agricola Baita Susi — farm shop
Thu–Sat 10:30–13:00, 16:30–20:00; Sun 10:30–13:00 · 15 km
Vivaio da Lucia — garden centre
2 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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