When to plant watermelons in Ajaccio: 29 May – 30 August

In Ajaccio, watermelon: sow for seedlings from 10 April to 2 August; plant into a greenhouse from 8 May to 30 August; plant out into open ground from 29 May to 30 August. For plants and seeds, the places nearby include Pepiniere De Suartello (garden centre, 4 km) and Gamm Vert (garden centre, 8 km); addresses and opening hours are below.

Watermelon in Ajaccio: soil, season and weather

In Ajaccio the soil, not frost, sets the date: the last frost is over around 11 February, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 May, 107 days later.

Last spring frost	11 February
Top 7 cm of soil at 18 °C	29 May, 107 days after the last frost
Into an unheated greenhouse	8 May – 30 August; May outside: 11.3 °C at night, 20.9 °C by day; card 18–35 °C
First autumn frost	9 December, 194 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 July – 28 October
Days left for picking	135
Daylight	14:01 on 1 May, 14:57 on 29 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 3 rainy days

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

Watermelon in Ajaccio: care after planting

Planted on 29 May: in the first weeks water every 5 days.

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

29 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 Ajaccio during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 29.9 °C. Months that stay below 18 °C even by day on average: November (16.6 °C) and December (13.7 °C). Nights average below 18 °C in May, June and September–December (5–16.1 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.9	11.3	93	10	14:32
June	26.8	16.1	42	6	15:13
July	29.8	19	20	3	14:57
August	29.9	18.8	36	5	13:54
September	25.5	15.5	92	9	12:32
October	21.7	12.1	119	12	11:08
November	16.6	8.3	154	14	9:51
December	13.7	5	139	13	9:09

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Ajaccio, Livorno is 13 days earlier and Genoa 22 days later.

City	Distance	Date	Difference
Livorno	222 km	from 16 May	13 days earlier
Nice	231 km	29 May – 28 August	same day
Pisa	241 km	16 June – 9 August	18 days later
Siena	263 km	26 May – 18 August	3 days earlier
Genoa	277 km	20 June – 17 August	22 days later
Florence	291 km	28 May – 18 August	1 day earlier

Where to buy watermelon plants and seeds near Ajaccio

Buy plants ready to set out from 29 May to 30 August (from 8 May to 30 August for an unheated greenhouse); seed for raising your own is sown from 10 April to 2 August. Within 15 km of Ajaccio OpenStreetMap lists 7 garden centres, 2 markets and 1 farm shop (collected 27 October 2026).

Pepiniere De Suartello — garden centre
Mon–Sat 08:00–12:00, 14:00–18:30 · 4 km
Gamm Vert — garden centre
Mon–Sat 08:30–18:00 · 8 km
Marché d'Ajaccio - Marcatu d'Aiacciu — market
Tue–Sun 07:00–14:00 · 0 km · ajaccio-tourisme.com
Les jardins de Prunelli — garden centre
7 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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