Last and first frost dates in Bielefeld

When is the last frost in Bielefeld?

The last frost in Bielefeld usually comes around 20 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 30 March, while corn waits until 29 April. The first autumn frost follows around 18 November, about 212 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 Bielefeld

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 6 days before the last spring frost and 15 °C 23 days after it.

Frost dates near Bielefeld

Of the nearest cities on our list, the last spring frost ends earliest in Hanover (9 April) and latest in Hamm (20 April).

Seeds, seedlings and markets in Bielefeld

Within 15 km of Bielefeld OpenStreetMap lists 23 garden centres, 1 farm-supply shop, 2 plant nurseries, 13 markets and 26 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Blumen Klose, 2 km away.

• Blumen Klose — garden centre
  Oldentruper Straße 84a, 33604 Bielefeld · Mon–Fri 09:00–18:00; Sat 09:00–14:00; Sun, public holidays 10:00–12:00 · 2 km · blumenklose.de
• Kampmeier Land- und Gartentechnik — farm supply
  Siemensweg 3, 33758 Schloß Holte-Stukenbrock · 15 km
• Feldmann — plant nursery
  Westerfeldstraße 48c, 33611 Bielefeld · 5 km · gartengestaltung-bielefeld.de
• Hauptmarkt — market
  Kesselbrink, Bielefeld · Sat 07:00–13:00 · 1 km · bielefeld.de
• Köckerhof — farm shop
  Babenhauser Straße 30, 33619 Bielefeld · Tue–Fri 09:00–19:00; Sat 09:00–14:00 · 5 km · koeckerhof.de
• Gartencenter Mühlenweg — garden centre
  Südring 9, 33647 Bielefeld · Mon–Fri 09:00–20:00; Sat 08:00–20:00; Sun 10:00–15:00 · 5 km · gartencenter-muehlenweg.de

• Where to buy seeds and seedlings in Bielefeld
• Selling your own harvest in Germany

Places: © OpenStreetMap contributors, ODbL.

Weather in Bielefeld by month

Average weather in Bielefeld over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June–September (20–23.8 °C). No month averages below 0 °C at night; the coldest nights, in January, average 0.3 °C. About 886 mm of rain falls in a year, on 164 days; January is the wettest month (91 mm) and April the driest (57 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).