Last and first frost dates in Debrecen

When is the last frost in Debrecen?

The last frost in Debrecen usually comes around 29 March: 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 8 March, while corn waits until 11 April. The first autumn frost follows around 12 November, about 228 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 Debrecen

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 3 days after the last spring frost and 15 °C 33 days after it.

Frost dates near Debrecen

Of the nearest cities on our list, the last spring frost ends earliest in Miskolc (2 April) and latest in Mukachevo (24 April).

Weather in Debrecen by month

Average weather in Debrecen over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: May–September (21.5–28.7 °C). Nights average below 0 °C in January (-2.6 °C), February (-0.6 °C) and December (-0.4 °C). About 614 mm of rain falls in a year, on 107 days; June is the wettest month (75 mm) and August the driest (38 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).