When to plant tomatoes in Le Havre: 11 May – 22 August

In Le Havre, tomato: sow for seedlings from 27 February to 1 July; plant into a greenhouse from 20 April to 22 August; plant out into open ground from 11 May to 22 August. For plants and seeds, the places nearby include Au Jardin Fleuri (garden centre, 4 km) and Le Paradis Desjardins (garden centre, 7 km); addresses and opening hours are below.

Tomato in Le Havre: soil, season and weather

In Le Havre the soil, not frost, sets the date: the last frost is over around 14 February, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 11 May, 86 days later.

Last spring frost	14 February
Top 7 cm of soil at 15 °C	11 May, 86 days after the last frost
Into an unheated greenhouse	20 April – 22 August; April outside: 6.8 °C at night, 14.3 °C by day; card 16–27 °C
First autumn frost	12 December, 215 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	20 July – 31 October
Days left for picking	145
Daylight	12:08 on 20 March, 15:08 on 11 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, July, has 13 rainy days

Tomato in Le Havre: care after planting

Planted on 11 May: in the first weeks water every 4 days.

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

11 May — feed: balanced (NPK)
8 June — feed: nitrogen

Pests and diseases of tomato 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 Le Havre during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 22 °C. Months that stay below 16 °C even by day on average: November (11.8 °C) and December (9.5 °C). Nights average below 16 °C in every month of the season, from 5.5 °C to 15.7 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	17	10.2	69	12	15:20
June	20.4	13.6	69	12	16:15
July	22	15.5	62	13	15:53
August	22	15.7	66	12	14:28
September	20	13.9	93	13	12:40
October	16.4	11.2	115	15	10:51
November	11.8	7.7	119	17	9:08
December	9.5	5.5	121	16	8:11

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Le Havre, Le Mans is 3 days earlier and Brighton 38 days later.

City	Distance	Date	Difference
Caen	48 km	21 May – 15 August	10 days later
Rouen	72 km	14 May – 1 August	3 days later
Brighton	150 km	18 June – 11 August	38 days later
Amiens	164 km	17 May – 1 August	6 days later
Le Mans	166 km	8 May – 4 August	3 days earlier
Portsmouth	170 km	21 May – 11 August	10 days later

Where to buy tomato plants and seeds near Le Havre

Buy plants ready to set out from 11 May to 22 August (from 20 April to 22 August for an unheated greenhouse); seed for raising your own is sown from 27 February to 1 July. Within 15 km of Le Havre OpenStreetMap lists 4 garden centres, 1 farm-supply shop, 1 plant nursery, 9 markets and 7 farm shops (collected 20 October 2026).

Argentain Plants — garden centre
Impasse des Pâquerettes 7, 76930 Octeville-sur-Mer · 8 km · argentainplants.fr
Le Paradis Desjardins — garden centre
Mon–Sun 09:00–19:00 · 7 km · desjardins.fr
Au Jardin Fleuri — garden centre
Rue de Verdun 160, 76600 Le Havre · 4 km
Jardinerie Lecroq — garden centre
Route Départementale 6015 620, 76430 Epretot · 15 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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