Last and first frost dates in Gdynia

When is the last frost in Gdynia?

The last frost in Gdynia usually comes around 13 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 23 March, while corn waits until 10 May. The first autumn frost follows around 19 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 Gdynia

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 after the last spring frost and 15 °C 32 days after it.

Frost dates near Gdynia

Of the nearest cities on our list, the last spring frost ends earliest in Gdańsk (22 April) and latest in Elbląg (30 April).

Seeds, seedlings and markets in Gdynia

Within 15 km of Gdynia OpenStreetMap lists 9 garden centres, 1 farm-supply shop, 10 markets and 1 farm shop (collected 28 October 2026). The nearest garden centre to the city centre is Anemon, 2 km away.

• Anemon — garden centre
  Mon–Fri 10:00–17:00; Sat 10:00–13:00 · 2 km
• Sklep rolniczy Patryk — farm supply
  Mon–Fri 08:00–16:00; Sat 08:00–13:00 · 15 km
• Bazar Natury — market
  Sat 09:00–14:00 · 6 km
• Kaktusiarnia — garden centre
  Partyzantów 2, 84-230 · Mon–Fri 09:00–17:00; Sat 09:00–15:00 · 11 km · kaktusiarnia.pl
• Sopocki Rynek — market
  Polna 8-10, 81-745 Sopot · "W sobotę bez konkretnych godzin" · 10 km
• Cyrzan — garden centre
  Mon–Fri 07:00–18:00; Sat 07:00–16:00; Sun 10:00–15:00 "W niedziele handlowe" · 11 km · cyrzan.com

• Where to buy seeds and seedlings in Gdynia
• Selling your own harvest in Poland

Places: © OpenStreetMap contributors, ODbL.

Weather in Gdynia by month

Average weather in Gdynia over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: June (21.1 °C), July (21.7 °C) and August (22.4 °C). Nights average below 0 °C in January (-1.5 °C) and February (-1.2 °C). About 709 mm of rain falls in a year, on 145 days; July is the wettest month (111 mm) and March the driest (37 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).