When to plant watermelons in Nice: 29 May – 28 August

In Nice, watermelon: sow for seedlings from 10 April to 31 July; plant into a greenhouse from 8 May to 28 August; plant out into open ground from 29 May to 28 August. For plants and seeds, the places nearby include EARL Boijout Bio (farm shop, 11 km) and Galli'Nice (farm shop, 13 km); addresses and opening hours are below.

Watermelon in Nice: soil, season and weather

In Nice the soil, not frost, sets the date: the last frost is over around 10 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 May, 80 days later.

Last spring frost	10 March
Top 7 cm of soil at 18 °C	29 May, 80 days after the last frost
Into an unheated greenhouse	8 May – 28 August; May outside: 10.7 °C at night, 19.7 °C by day; card 18–35 °C
First autumn frost	7 December, 192 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 July – 26 October
Days left for picking	133
Daylight	14:08 on 1 May, 15:08 on 29 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 4 rainy days

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

Watermelon in Nice: 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 Nice during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 27.8 °C. Months that stay below 18 °C even by day on average: November (14.6 °C) and December (11.7 °C). Nights average below 18 °C in May–July and September–December (2.2–17.9 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	19.7	10.7	81	12	14:42
June	24.6	15.5	52	9	15:26
July	27.3	17.9	16	4	15:08
August	27.8	18	24	5	14:01
September	23.7	14.2	54	7	12:33
October	19.6	10.4	121	8	11:04
November	14.6	5.5	124	10	9:42
December	11.7	2.2	92	7	8:57

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Nice, Marseille is 19 days earlier and Grenoble 30 days later.

City	Distance	Date	Difference
Genoa	154 km	20 June – 17 August	22 days later
Turin	156 km	16 May – 11 August	13 days earlier
Marseille	160 km	from 10 May	19 days earlier
Avignon	199 km	18 May – 23 August	11 days earlier
Grenoble	206 km	28 June – 16 July	30 days later
Novara	222 km	23 May – 13 August	6 days earlier

Where to buy watermelon plants and seeds near Nice

Buy plants ready to set out from 29 May to 28 August (from 8 May to 28 August for an unheated greenhouse); seed for raising your own is sown from 10 April to 31 July. Within 15 km of Nice OpenStreetMap lists 13 garden centres, 13 markets and 8 farm shops (collected 20 October 2026).

EARL Boijout Bio — farm shop · sells: vegetables
Chemin des Sausses 810, 06640 Saint-Jeannet · "Vente directe à la ferme" · 11 km
René Audibert — farm shop · sells: olive
Route Nationale de Cagne sur Mer 304, 06510 Le Broc · "Vente directe à la ferme toute l'année" · 14 km
Galli'Nice — farm shop
Chemin de Garfes 152, 06390 contes · 13 km
La Ferme du Loup — farm shop
Wed, Sat 09:00–12:00 · 14 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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