Last and first frost dates in Mannheim

When is the last frost in Mannheim?

The last frost in Mannheim usually comes around 14 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 24 March, while corn waits until 21 April. The first autumn frost follows around 20 November, about 220 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 Mannheim

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 12 days before the last spring frost and 15 °C 26 days after it.

Frost dates near Mannheim

Of the nearest cities on our list, the last spring frost ends earliest in Karlsruhe (5 April) and latest in Heidelberg (20 April).

Seeds, seedlings and markets in Mannheim

Within 15 km of Mannheim OpenStreetMap lists 30 garden centres, 3 farm-supply shops, 17 plant nurseries, 24 markets and 50 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is OBI Gartencenter, 5 km away.

• OBI Gartencenter — garden centre
  Industriestraße 45-49, 67063 Ludwigshafen am Rhein · Mon–Sat 08:00–20:00 · 5 km · obi.de
• Agrartechnik Zentrum Mutterstadt — farm supply
  Mühlweg 1, 67112 Mutterstadt · Mar–Oct Mon–Fri 07:30–18:00; Mar–Oct Sat 08:00–12:00; Nov–Feb Mon–Fri 07:30–17:00 · 10 km
• Baumschule Heinz Bachmann — plant nursery
  Am Weidenbergel 59, Mannheim · 5 km
• Marktplatz — market
  G1 · 24/7 · 0 km · ep-ma.de
• Guckerts Hofladen — farm shop
  Alter Frankfurter Weg 36, 68307 Mannheim · Tue, Wed 14:00–18:30; Thu, Fri 09:00–12:00, 14:00–18:30; Sat 09:00–12:00; public holidays closed · 9 km · guckertshof.de
• Rosen Caruso — garden centre
  Mannheimer Straße 158, 67071 Ludwigshafen am Rhein · 5 km · rosen-caruso.de

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

Places: © OpenStreetMap contributors, ODbL.

Weather in Mannheim by month

Average weather in Mannheim over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (21.8–26.2 °C). No month averages below 0 °C at night; the coldest nights, in January, average 0.1 °C. About 855 mm of rain falls in a year, on 146 days; May is the wettest month (85 mm) and April the driest (55 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).