Last and first frost dates in Lille

When is the last frost in Lille?

The last frost in Lille usually comes around 8 April: 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 18 March, while corn waits until 20 April. The first autumn frost follows around 21 November, about 227 days later: harvest or cover frost-tender crops before then.

When to sow and plant

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 Lille

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 5 days before the last spring frost and 15 °C 38 days after it.

Frost dates near Lille

Of the nearest cities on our list, the last spring frost ends earliest in Bruges (27 March) and latest in Ghent (12 April).

Seeds, seedlings and markets in Lille

Within 15 km of Lille OpenStreetMap lists 14 garden centres, 3 farm-supply shops, 4 plant nurseries, 20 markets and 33 farm shops (collected 20 October 2026). The nearest garden centre to the city centre is Botanic, 6 km away.

• Botanic — garden centre
  Rue Louis Constant 1, 59491 Villeneuve-d'Ascq · Mon–Fri, Sun 09:30–19:00; Sat 09:00–19:00 · 6 km · lille.compagnonsdessaisons.com
• ICKO Lille — farm supply
  Rue de Lille 71, 59710 Avelin · 10 km
• Les Halles — market
  Tue–Sat 08:00–20:00; Sun 08:00–15:00 · 1 km · halles-wazemmes.com
• Otera — farm shop
  Rue Léon Gambetta 392, 59000 Lille · Mon–Sat 09:00–20:00; Sun 09:00–13:30 · 1 km · magasins.otera.fr
• Jardiland — garden centre
  Mon–Sun 09:30–19:00 · 6 km · jardiland.com
• Marché de Wazemmes — market
  Sun, Tue, Thu 07:00–15:00 · 1 km

• Where to buy seeds and seedlings in Lille
• Selling your own harvest in France

Places: © OpenStreetMap contributors, ODbL.

Weather in Lille by month

Average weather in Lille over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June–September (20.5–23.3 °C). No month averages below 0 °C at night; the coldest nights, in January, average 1.3 °C. About 775 mm of rain falls in a year, on 139 days; January is the wettest month (80 mm) and April the driest (45 mm).

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

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).