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Last and first frost dates in Brest (France)

France

In Brest (France) the last spring frost usually comes around 21 February and the first autumn frost around 13 December, which leaves about 295 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 26 May to 23 August.

Last spring frostaround 21 February
First autumn frostaround 13 December
Frost-free days295 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 Brest (France)?

The last frost in Brest (France) usually comes around 21 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 31 January, while corn waits until 20 April. The first autumn frost follows around 13 December, about 295 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha29 December – 4 September7 February – 14 October28 February – 14 October
Ageratumfrom 10 March—from 26 May
Arugula——sow 31 January – 8 November
Basil22 April – 11 October30 May – 18 November20 June – 18 November
Beet——sow 31 January – 14 October
Bell Pepper31 March – 24 June30 May – 23 August20 June – 23 August
Black-eyed Susanfrom 7 December—from 28 February
Bok Choy3 January – 22 October7 February – 26 November28 February – 26 November
Borage——sow 28 February – 19 October
Broad bean——sow 31 January – 4 September
Broccoli——sow 31 January – 28 August
Brussels Sprouts26 November – 26 July10 January – 9 September31 January – 9 September
Busy Lizziefrom 6 December—from 28 February
Cabbage——sow 31 January – 5 August
Calendula——sow from 31 January
Carrot——sow 31 January – 20 September
Cauliflower29 November – 28 August10 January – 9 October31 January – 9 October
Celeriac22 November – 25 June7 February – 10 September28 February – 10 September
Celery22 November – 5 July7 February – 20 September28 February – 20 September
Celosiafrom 28 Marchfrom 12 Mayfrom 2 June
Chamomile——sow 31 January – 9 October
Chayote1 January – 18 June30 March – 14 September20 April – 14 September
Chickpea——sow 31 January – 25 August
Chicory16 December – 19 September—31 January – 14 October
Chili Pepper31 March – 31 July30 May – 29 September20 June – 29 September
China asterfrom 8 Aprilfrom 30 Mayfrom 20 June
Chives——sow 31 January – 30 September
Cilantro——sow 31 January – 10 October
Corn——sow 20 April – 25 August
Corn poppy——sow from 31 January
Cosmosfrom 28 Marchfrom 12 Mayfrom 2 June
Cucumber2 May – 31 August30 May – 28 September20 June – 28 September
Daikon——sow 31 January – 7 October
Delphiniumfrom 12 November—from 31 January
Dill——sow 31 January – 20 October
Edging lobeliafrom 6 December—from 28 February
Eggplant31 March – 24 June30 May – 23 August20 June – 23 August
Florence fennel24 December – 4 September7 February – 19 October28 February – 19 October
Foxglovefrom 25 October—from 31 January
Garden sorrel——sow 31 January – 8 October
Green Beans——sow 2 June – 2 September
Hollyhock——sow from 31 January
Hyssop——sow 31 January – 31 August
Kale——sow 31 January – 2 October
Kiwano3 April – 7 September5 May – 9 October26 May – 9 October
Kohlrabi——sow 31 January – 12 October
Leek1 November – 16 June10 January – 25 August31 January – 25 August
Lemon balm——sow 31 January – 4 October
Lettuce——sow 31 January – 17 October
Lisianthusfrom 15 Octoberfrom 10 Januaryfrom 31 January
Lovage——sow from 31 January
Luffa18 April – 2 July30 May – 13 August20 June – 13 August
Marigoldfrom 27 Decemberfrom 7 Februaryfrom 28 February
Marjoram31 March – 19 September—20 June – 18 November
Melon2 May – 18 August30 May – 15 September20 June – 15 September
Microgreens——sow 2 June – 29 November
Moringa28 April – 24 September22 June – 18 November13 July – 18 November
Moss rosefrom 13 December—from 28 February
Mustard greens——sow 31 January – 29 October
Napa cabbage5 January – 29 September7 February – 1 November28 February – 1 November
Nasturtiumfrom 31 Decemberfrom 7 Februaryfrom 28 February
Okra18 April – 12 September30 May – 24 October20 June – 24 October
Oregano11 November – 9 September10 January – 8 November31 January – 8 November
Pansyfrom 15 Novemberfrom 10 Januaryfrom 31 January
Parsley——sow 31 January – 28 September
Parsnip——sow 31 January – 17 August
Peanut23 April – 8 August30 May – 14 September20 June – 14 September
Peas——sow 31 January – 30 September
Petuniafrom 28 Marchfrom 30 Mayfrom 20 June
Physalis21 March – 5 August5 May – 19 September26 May – 19 September
Pumpkin18 April – 7 July30 May – 18 August20 June – 18 August
Purple coneflowerfrom 9 November—from 31 January
Radish——sow 31 January – 13 November
Sage22 November – 5 September10 January – 24 October31 January – 24 October
Scarlet sagefrom 14 March—from 26 May
Snapdragonfrom 6 Novemberfrom 10 Januaryfrom 31 January
Soybean——sow 20 June – 24 September
Spinach——sow 31 January – 19 October
Stevia17 March – 27 July5 May – 14 September26 May – 14 September
Stock——sow from 31 January
Sunflower——sow from 2 June
Sweet alyssum——sow from 31 January
Sweet Corn24 March – 19 September15 April – 11 October6 May – 11 October
Sweet peafrom 29 Novemberfrom 10 Januaryfrom 31 January
Sweet William——sow from 31 January
Swiss Chard——sow 31 January – 14 October
Thyme——sow 31 January – 25 August
Tomato14 March – 2 July5 May – 23 August26 May – 23 August
Turnip——sow 31 January – 16 October
Watercress——sow 31 January – 27 October
Watermelon2 May – 6 August30 May – 3 September20 June – 3 September
Zinniafrom 18 Mayfrom 22 Junefrom 13 July
Zucchini9 May – 5 September30 May – 26 September20 June – 26 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 Brest (France)

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 7 days after the last spring frost and 15 °C 94 days after it.

SoilDateAgainst the last spring frost
5 °Calready in the first week of January—
10 °C28 February7 days later
15 °C26 May94 days later
18 °C20 June119 days later

Frost dates near Brest (France)

Of the nearest cities on our list, the last spring frost ends earliest in Plymouth (1 March) and latest in Exeter (3 April).

CityDistanceLast spring frostFirst autumn frost
Quimper52 km8 March9 December
Rennes210 km12 March28 November
Plymouth222 km1 March1 December
Nantes255 km7 March29 November
Exeter268 km3 April27 November

Seeds, seedlings and markets in Brest (France)

Within 15 km of Brest (France) OpenStreetMap lists 13 garden centres, 1 plant nursery, 22 markets and 15 farm shops (collected 27 October 2026). The nearest garden centre to the city centre is Magasin Vert, 4 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Brest (France)

Frosts in Brest (France) usually come from about 13 December to about 21 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 Brest (France) by month

Average weather in Brest (France) over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: July (20.9 °C) and August (20.8 °C). No month averages below 0 °C at night; the coldest nights, in January, average 4.8 °C. About 1164 mm of rain falls in a year, on 175 days; December is the wettest month (143 mm) and July the driest (65 mm).

MonthDay, °CNight, °CRain, mmRainy days
January9.64.812617
February10.45.410115
March11.65.99716
April14.26.76812
May16.89.46912
June19.312.29414
July20.913.96513
August20.8147112
September18.912.68414
October15.910.511615
November12.68.113017
December10.76.514318

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 13 November
Crocusby 13 November
Daffodilby 13 November
Garlic13 November – end of December
Grape hyacinthby 13 November
Helleboreby 13 November
Hyacinthby 13 November
Lilyby 13 November
Ornamental onionby 13 November
Peonyby 13 November
Saffronby 13 November
Snowdropby 13 November
Tulipby 13 November
Wild garlicby 13 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).