Greenly Garden

Last and first frost dates in Paraná

Argentina

Last spring frostaround 8 July
First autumn frostnone in ten years

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Paraná?

The last frost in Paraná usually comes around 8 July: 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 17 June, while corn waits until 15 July.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achochafrom 15 Mayfrom 24 Junefrom 15 July
Ageratumfrom 14 May—from 30 July
Arugula——sow from 17 June
Basilfrom 13 Julyfrom 20 Augustfrom 10 September
Beet——sow from 17 June
Bell Pepperfrom 21 Junefrom 20 Augustfrom 10 September
Black-eyed Susanfrom 23 April—from 15 July
Bok Choyfrom 20 Mayfrom 24 Junefrom 15 July
Borage——sow from 15 July
Broad bean——sow from 17 June
Broccoli——sow from 17 June
Brussels Sproutsfrom 12 Aprilfrom 27 Mayfrom 17 June
Busy Lizziefrom 22 April—from 15 July
Cabbage——sow from 17 June
Calendula——sow from 17 June
Carrot——sow from 17 June
Cauliflowerfrom 15 Aprilfrom 27 Mayfrom 17 June
Celeriacfrom 8 Aprilfrom 24 Junefrom 15 July
Celeryfrom 8 Aprilfrom 24 Junefrom 15 July
Celosiafrom 9 Junefrom 24 Julyfrom 14 August
Chamomile——sow from 17 June
Chayotefrom 28 Marchfrom 24 Junefrom 15 July
Chickpea——sow from 17 June
Chicoryfrom 2 May—from 17 June
Chili Pepperfrom 21 Junefrom 20 Augustfrom 10 September
China asterfrom 29 Junefrom 20 Augustfrom 10 September
Chives——sow from 17 June
Cilantro——sow from 17 June
Corn——sow from 15 July
Corn poppy——sow from 17 June
Cosmosfrom 9 Junefrom 24 Julyfrom 14 August
Cucumberfrom 23 Julyfrom 20 Augustfrom 10 September
Daikon——sow from 17 June
Delphiniumfrom 29 March—from 17 June
Dill——sow from 17 June
Edging lobeliafrom 22 April—from 15 July
Eggplantfrom 21 Junefrom 20 Augustfrom 10 September
Florence fennelfrom 10 Mayfrom 24 Junefrom 15 July
Foxglovefrom 11 March—from 17 June
Garden sorrel——sow from 17 June
Green Beans——sow from 14 August
Hollyhock——sow from 17 June
Hyssop——sow from 17 June
Kale——sow from 17 June
Kiwanofrom 7 Junefrom 9 Julyfrom 30 July
Kohlrabi——sow from 17 June
Leekfrom 18 Marchfrom 27 Mayfrom 17 June
Lemon balm——sow from 17 June
Lettuce——sow from 17 June
Lisianthusfrom 1 Marchfrom 27 Mayfrom 17 June
Lovage——sow from 17 June
Luffafrom 9 Julyfrom 20 Augustfrom 10 September
Marigoldfrom 13 Mayfrom 24 Junefrom 15 July
Marjoramfrom 21 June—from 10 September
Melonfrom 23 Julyfrom 20 Augustfrom 10 September
Microgreens——sow from 14 August
Moringafrom 19 Julyfrom 12 Septemberfrom 3 October
Moss rosefrom 29 April—from 15 July
Mustard greens——sow from 17 June
Napa cabbagefrom 22 Mayfrom 24 Junefrom 15 July
Nasturtiumfrom 17 Mayfrom 24 Junefrom 15 July
Okrafrom 9 Julyfrom 20 Augustfrom 10 September
Oreganofrom 28 Marchfrom 27 Mayfrom 17 June
Pansyfrom 1 Aprilfrom 27 Mayfrom 17 June
Parsley——sow from 17 June
Parsnip——sow from 17 June
Peanutfrom 14 Julyfrom 20 Augustfrom 10 September
Peas——sow from 17 June
Petuniafrom 18 Junefrom 20 Augustfrom 10 September
Physalisfrom 25 Mayfrom 9 Julyfrom 30 July
Pumpkinfrom 9 Julyfrom 20 Augustfrom 10 September
Purple coneflowerfrom 26 March—from 17 June
Radish——sow from 17 June
Sagefrom 8 Aprilfrom 27 Mayfrom 17 June
Scarlet sagefrom 18 May—from 30 July
Snapdragonfrom 23 Marchfrom 27 Mayfrom 17 June
Soybean——sow from 10 September
Spinach——sow from 17 June
Steviafrom 21 Mayfrom 9 Julyfrom 30 July
Stock——sow from 17 June
Sunflower——sow from 14 August
Sweet alyssum——sow from 17 June
Sweet Cornfrom 2 Junefrom 24 Junefrom 15 July
Sweet peafrom 15 Aprilfrom 27 Mayfrom 17 June
Sweet William——sow from 17 June
Swiss Chard——sow from 17 June
Thyme——sow from 17 June
Tomatofrom 18 Mayfrom 9 Julyfrom 30 July
Turnip——sow from 17 June
Watercress——sow from 17 June
Watermelonfrom 23 Julyfrom 20 Augustfrom 10 September
Zinniafrom 8 Augustfrom 12 Septemberfrom 3 October
Zucchinifrom 30 Julyfrom 20 Augustfrom 10 September

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 Paraná

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).

SoilDateAgainst the last spring frost
5 °Calready in the first week of July—
10 °Calready in the first week of July—
15 °C30 July22 days later
18 °C10 September64 days later

Frost dates near Paraná

Of the nearest cities on our list, the last spring frost ends earliest in Santa Fe (1 July) and latest in San Francisco (Argentina) (29 July).

CityDistanceLast spring frostFirst autumn frost
Santa Fe19 km1 July—
Rafaela106 km17 July17 June
Rosario136 km16 July15 June
San Francisco (Argentina)151 km29 July25 June
Paysandú240 km15 July27 June

Seeds, seedlings and markets in Paraná

Within 15 km of Paraná OpenStreetMap lists 1 garden centre and 5 markets (collected 27 October 2026). The nearest market to the city centre is Mercado Nogoyá, 1 km away.

Places: © OpenStreetMap contributors, ODbL.

Weather in Paraná by month

Average weather in Paraná over 2016–2025: the warmest month is January. Months that average 20 °C or more by day: September–April (22.1–30.9 °C). Months that average 30 °C or more by day: January (30.9 °C). No month averages below 0 °C at night; the coldest nights, in July, average 8.7 °C. About 967 mm of rain falls in a year, on 82 days; January is the wettest month (118 mm) and June the driest (38 mm).

MonthDay, °CNight, °CRain, mmRainy days
January30.921.61188
February29.920.81077
March27.418.91158
April23.515.81119
May19.212687
June16.99.2385
July16.68.7495
August19.39.7465
September22.111.8445
October24.814.4848
November27.817.4897
December29.819.7988

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).