Last and first frost dates in Devonport

When is the last frost in Devonport?

The last frost in Devonport usually comes around 23 August: 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 2 August, while corn waits until 19 October. The first autumn frost follows around 26 June, about 307 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 Devonport

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 13 days after the last spring frost and 15 °C 91 days after it.

Frost dates near Devonport

Of the nearest cities on our list, the last spring frost ends earliest in Geelong (1 July) and latest in Launceston (28 August).

Seeds, seedlings and markets in Devonport

Within 15 km of Devonport OpenStreetMap lists 1 garden centre and 1 plant nursery (collected 28 October 2026). The nearest garden centre to the city centre is Big Pot Nursery, 11 km away.

• Big Pot Nursery — garden centre
  Melrose Road 1032, 7310 · 11 km
• Plants Plus Nursery Devonport — plant nursery
  Steele Street 147-149, 7310 · 0 km

• Where to buy seeds and seedlings in Devonport
• Selling your own harvest in Australia

Places: © OpenStreetMap contributors, ODbL.

Weather in Devonport by month

Average weather in Devonport over 2016–2025: the warmest month is January. Months that average 20 °C or more by day: December–March (20.9–23.4 °C). No month averages below 0 °C at night; the coldest nights, in July, average 5.4 °C. About 1033 mm of rain falls in a year, on 132 days; July is the wettest month (124 mm) and February the driest (52 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).