Last and first frost dates in Klagenfurt

When is the last frost in Klagenfurt?

The last frost in Klagenfurt usually comes around 21 May: 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 April, while corn waits until 19 June. The first autumn frost follows around 24 September, about 126 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 Klagenfurt

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 15 days after the last spring frost and 15 °C 46 days after it.

Frost dates near Klagenfurt

Of the nearest cities on our list, the last spring frost ends earliest in Trieste (19 March) and latest in Villach (28 April).

Seeds, seedlings and markets in Klagenfurt

Within 15 km of Klagenfurt OpenStreetMap lists 11 garden centres, 1 plant nursery, 2 markets and 7 farm shops (collected 28 October 2026). The nearest garden centre to the city centre is Gärtnerei Hübner, 2 km away.

• Gärtnerei Hübner — garden centre
  Pischeldorfer Straße 62, Klagenfurt am Wörthersee · 2 km
• Wochenmarkt Waidmannsdorf — market
  Baumbachplatz 12a, 9020 Klagenfurt am Wörthersee · Wed 06:00–13:00; Sat 06:00–13:00 · 2 km
• Hofladen — farm shop
  06:00–22:00 · 3 km
• Gartenwelt Kropfitsch — garden centre
  St. Veiter Straße 84, 9020 Klagenfurt am Wörthersee · 2 km · gartenwelt-kropfitsch.at
• Marktplatz — market
  Hauptstraße 175, 9210 Pörtschach am Wörther See · 13 km
• Waldhauser's — farm shop
  24/7 · 4 km

• Where to buy seeds and seedlings in Klagenfurt
• Selling your own harvest in Austria

Places: © OpenStreetMap contributors, ODbL.

Weather in Klagenfurt by month

Average weather in Klagenfurt over 2016–2025: the warmest month is July. No month averages 20 °C by day; the warmest, July, reaches 18.6 °C. Nights average below 0 °C in November–April (-9.1–-1.7 °C). About 1443 mm of rain falls in a year, on 157 days; May is the wettest month (174 mm) and January the driest (81 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).