When to plant watermelons in Toulouse: 29 May – 19 August

In Toulouse, watermelon: sow for seedlings from 10 April to 22 July; plant into a greenhouse from 8 May to 19 August; plant out into open ground from 29 May to 19 August.

Watermelon in Toulouse: soil, season and weather

In Toulouse the soil, not frost, sets the date: the last frost is over around 12 March, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 May, 78 days later.

Last spring frost	12 March
Top 7 cm of soil at 18 °C	29 May, 78 days after the last frost
Into an unheated greenhouse	8 May – 19 August; May outside: 11 °C at night, 20.8 °C by day; card 18–35 °C
First autumn frost	28 November, 183 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 July – 17 October
Days left for picking	124
Daylight	14:08 on 1 May, 15:08 on 29 May
Watering outdoors when fruiting (card)	every 5 days; the driest month, July, has 7 rainy days

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

Watermelon in Toulouse: 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 Toulouse during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 29.1 °C. Months that stay below 18 °C even by day on average: November (13.9 °C). Nights average below 18 °C in every month of the season, from 6.4 °C to 17.7 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	20.8	11	92	14	14:42
June	25.9	15.5	70	10	15:25
July	28.4	17.5	50	7	15:08
August	29.1	17.7	57	7	14:01
September	24.8	14.5	61	9	12:33
October	20.4	11.4	62	10	11:05
November	13.9	6.4	77	13	9:42

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Toulouse, Perpignan is 35 days earlier and Jaca 21 days later.

City	Distance	Date	Difference
Pau	149 km	2 June – 25 August	4 days later
Perpignan	155 km	24 April – 2 September	35 days earlier
Montpellier	196 km	8 May – 18 September	21 days earlier
Jaca	199 km	19 June – 22 July	21 days later
Manresa	210 km	13 May – 23 August	16 days earlier
Bordeaux	212 km	28 May – 21 August	1 day earlier

Where to buy watermelon plants and seeds near Toulouse

Buy plants ready to set out from 29 May to 19 August (from 8 May to 19 August for an unheated greenhouse); seed for raising your own is sown from 10 April to 22 July. Within 15 km of Toulouse OpenStreetMap lists 21 garden centres, 1 farm-supply shop, 1 plant nursery, 85 markets and 11 farm shops (collected 20 October 2026).

Marché aux livres du Taur — market
Sat 10:00–19:00 · 1 km · metropole.toulouse.fr
Marché aux livres des allées Paul Feuga — market
Fri 10:00–19:00 · 1 km · metropole.toulouse.fr
Marché aux livres de Saint-Cyprien — market
Mon 08:00–18:00 · 1 km · metropole.toulouse.fr
Marché du Ravelin — market
Fri 07:00–13:30 · 1 km · metropole.toulouse.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