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Last and first frost dates in Le Havre

France

In Le Havre the last spring frost usually comes around 14 February and the first autumn frost around 12 December, which leaves about 301 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 11 May to 22 August.

Last spring frostaround 14 February
First autumn frostaround 12 December
Frost-free days301 days

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Le Havre?

The last frost in Le Havre usually comes around 14 February: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 24 January, while corn waits until 14 April. The first autumn frost follows around 12 December, about 301 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha22 January – 3 September3 March – 13 October24 March – 13 October
Ageratumfrom 23 February—from 11 May
Arugula——sow 24 January – 7 November
Basil13 April – 10 October21 May – 17 November11 June – 17 November
Beet——sow 24 January – 13 October
Bell Pepper22 March – 23 June21 May – 22 August11 June – 22 August
Black-eyed Susanfrom 31 December—from 24 March
Bok Choy27 January – 21 October3 March – 25 November24 March – 25 November
Borage——sow 21 February – 18 October
Broad bean——sow 24 January – 3 September
Broccoli——sow 24 January – 27 August
Brussels Sprouts19 November – 25 July3 January – 8 September24 January – 8 September
Busy Lizziefrom 29 November—from 21 February
Cabbage——sow 24 January – 4 August
Calendula——sow from 24 January
Carrot——sow 24 January – 19 September
Cauliflower22 November – 27 August3 January – 8 October24 January – 8 October
Celeriac16 December – 24 June3 March – 9 September24 March – 9 September
Celery16 December – 4 July3 March – 19 September24 March – 19 September
Celosiafrom 20 Marchfrom 4 Mayfrom 25 May
Chamomile——sow 24 January – 8 October
Chayote26 December – 17 June24 March – 13 September14 April – 13 September
Chickpea——sow 24 January – 24 August
Chicory9 December – 18 September—24 January – 13 October
Chili Pepper22 March – 30 July21 May – 28 September11 June – 28 September
China asterfrom 30 Marchfrom 21 Mayfrom 11 June
Chives——sow 24 January – 29 September
Cilantro——sow 24 January – 9 October
Corn——sow 14 April – 24 August
Corn poppy——sow from 24 January
Cosmosfrom 20 Marchfrom 4 Mayfrom 25 May
Cucumber23 April – 30 August21 May – 27 September11 June – 27 September
Daikon——sow 24 January – 6 October
Delphiniumfrom 5 November—from 24 January
Dill——sow 24 January – 19 October
Edging lobeliafrom 30 December—from 24 March
Eggplant22 March – 23 June21 May – 22 August11 June – 22 August
Florence fennel17 January – 3 September3 March – 18 October24 March – 18 October
Foxglovefrom 18 October—from 24 January
Garden sorrel——sow 24 January – 7 October
Green Beans——sow 25 May – 1 September
Hollyhock——sow from 24 January
Hyssop——sow 24 January – 30 August
Kale——sow 24 January – 1 October
Kiwano19 March – 6 September20 April – 8 October11 May – 8 October
Kohlrabi——sow 24 January – 11 October
Leek25 October – 15 June3 January – 24 August24 January – 24 August
Lemon balm——sow 24 January – 3 October
Lettuce——sow 24 January – 16 October
Lisianthusfrom 8 Octoberfrom 3 Januaryfrom 24 January
Lovage——sow from 24 January
Luffa9 April – 1 July21 May – 12 August11 June – 12 August
Marigoldfrom 20 Januaryfrom 3 Marchfrom 24 March
Marjoram22 March – 18 September—11 June – 17 November
Melon23 April – 17 August21 May – 14 September11 June – 14 September
Microgreens——sow 25 May – 28 November
Moringa13 April – 23 September7 June – 17 November28 June – 17 November
Moss rosefrom 6 December—from 21 February
Mustard greens——sow 24 January – 28 October
Napa cabbage29 January – 28 September3 March – 31 October24 March – 31 October
Nasturtiumfrom 24 Januaryfrom 3 Marchfrom 24 March
Okra9 April – 11 September21 May – 23 October11 June – 23 October
Oregano4 November – 8 September3 January – 7 November24 January – 7 November
Pansyfrom 8 Novemberfrom 3 Januaryfrom 24 January
Parsley——sow 24 January – 27 September
Parsnip——sow 24 January – 16 August
Peanut14 April – 7 August21 May – 13 September11 June – 13 September
Peas——sow 24 January – 29 September
Petuniafrom 19 Marchfrom 21 Mayfrom 11 June
Physalis6 March – 4 August20 April – 18 September11 May – 18 September
Pumpkin9 April – 6 July21 May – 17 August11 June – 17 August
Purple coneflowerfrom 2 November—from 24 January
Radish——sow 24 January – 12 November
Sage15 November – 4 September3 January – 23 October24 January – 23 October
Scarlet sagefrom 27 February—from 11 May
Snapdragonfrom 30 Octoberfrom 3 Januaryfrom 24 January
Soybean——sow 11 June – 23 September
Spinach——sow 24 January – 18 October
Stevia2 March – 26 July20 April – 13 September11 May – 13 September
Stock——sow from 24 January
Sunflower——sow from 25 May
Sweet alyssum——sow from 24 January
Sweet Corn12 March – 18 September3 April – 10 October24 April – 10 October
Sweet peafrom 22 Novemberfrom 3 Januaryfrom 24 January
Sweet William——sow from 24 January
Swiss Chard——sow 24 January – 13 October
Thyme——sow 24 January – 24 August
Tomato27 February – 1 July20 April – 22 August11 May – 22 August
Turnip——sow 24 January – 15 October
Watercress——sow 24 January – 26 October
Watermelon23 April – 5 August21 May – 2 September11 June – 2 September
Zinniafrom 3 Mayfrom 7 Junefrom 28 June
Zucchini30 April – 4 September21 May – 25 September11 June – 25 September

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. 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.

When the soil warms up in Le Havre

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 38 days after the last spring frost and 15 °C 86 days after it.

SoilDateAgainst the last spring frost
5 °Calready in the first week of January—
10 °C24 March38 days later
15 °C11 May86 days later
18 °C11 June117 days later

Frost dates near Le Havre

Of the nearest cities on our list, the last spring frost ends earliest in Brighton (8 February) and latest in Rouen (6 April).

CityDistanceLast spring frostFirst autumn frost
Caen48 km12 March5 December
Rouen72 km6 April21 November
Brighton150 km8 February1 December
Amiens164 km5 April21 November
Le Mans166 km2 April24 November

Seeds, seedlings and markets in Le Havre

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). The nearest garden centre to the city centre is Au Jardin Fleuri, 4 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Le Havre

Frosts in Le Havre usually come from about 12 December to about 14 February. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Le Havre by month

Average weather in Le Havre over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (20–22 °C). No month averages below 0 °C at night; the coldest nights, in January, average 3.9 °C. About 1032 mm of rain falls in a year, on 165 days; December is the wettest month (121 mm) and April the driest (54 mm).

MonthDay, °CNight, °CRain, mmRainy days
January8.23.911316
February9.54.57513
March11.65.67615
April14.36.85411
May1710.26912
June20.413.66912
July2215.56213
August2215.76612
September2013.99313
October16.411.211515
November11.87.711917
December9.55.512116

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

CropWhen to plant
Bearded Irisby 12 November
Crocusby 12 November
Daffodilby 12 November
Garlic12 November – end of December
Grape hyacinthby 12 November
Helleboreby 12 November
Hyacinthby 12 November
Lilyby 12 November
Ornamental onionby 12 November
Peonyby 12 November
Saffronby 12 November
Snowdropby 12 November
Tulipby 12 November
Wild garlicby 12 November

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).