When to plant watermelons in Dijon: 31 May – 10 August

In Dijon, watermelon: sow for seedlings from 12 April to 13 July; plant into a greenhouse from 10 May to 10 August; plant out into open ground from 31 May to 10 August.

Watermelon in Dijon: soil, season and weather

In Dijon the soil, not frost, sets the date: the last frost is over around 12 April, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 31 May, 49 days later.

Last spring frost	12 April
Top 7 cm of soil at 18 °C	31 May, 49 days after the last frost
Into an unheated greenhouse	10 May – 10 August; May outside: 9.4 °C at night, 18.9 °C by day; card 18–35 °C
First autumn frost	19 November, 172 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	29 July – 8 October
Days left for picking	113
Daylight	14:32 on 3 May, 15:38 on 31 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 9 rainy days

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

Watermelon in Dijon: care after planting

Planted on 31 May: in the first weeks water every 5 days.

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

31 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 Dijon during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 26.4 °C. Months that stay below 18 °C even by day on average: October (16.6 °C) and November (9.9 °C). Nights average below 18 °C in every month of the season, from 3.6 °C to 15.5 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	18.9	9.4	78	12	15:04
June	24.4	14.1	89	13	15:55
July	26.1	15.5	59	9	15:35
August	26.4	15.5	60	8	14:17
September	21.9	12.1	61	9	12:37
October	16.6	8.6	90	12	10:56
November	9.9	3.6	78	12	9:22

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon later than Dijon; the closest date is in Troyes, 2 days later.

City	Distance	Date	Difference
Besançon	74 km	3 June – 9 August	3 days later
Troyes	130 km	2 June – 9 August	2 days later
Neuchâtel	148 km	6 June – 19 August	6 days later
Lausanne	150 km	19 June – 11 August	19 days later
Geneva	150 km	8 June – 8 August	8 days later
Fribourg	170 km	21 June – 28 July	21 days later

Where to buy watermelon plants and seeds near Dijon

Buy plants ready to set out from 31 May to 10 August (from 10 May to 10 August for an unheated greenhouse); seed for raising your own is sown from 12 April to 13 July. Within 15 km of Dijon OpenStreetMap lists 11 garden centres, 1 farm-supply shop, 1 plant nursery, 11 markets and 7 farm shops (collected 20 October 2026).

Botanic — garden centre
4 km
Aubry — garden centre
9 km
Pépinière de Plombières — garden centre
5 km
Les Pépinières de Plombières — plant nursery
5 km · pepinieres-plombieres.fr

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.

Questions