Greenly Garden

Last and first frost dates in Melo

Uruguay

In Melo the last spring frost usually comes around 13 July and the first autumn frost around 14 June, which leaves about 336 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 1 August to 22 February.

Last spring frostaround 13 July
First autumn frostaround 14 June
Frost-free days336 days

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 Melo?

The last frost in Melo usually comes around 13 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 22 June, while corn waits until 20 July. The first autumn frost follows around 14 June, about 336 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha20 May – 5 March29 June – 14 April20 July – 14 April
Ageratumfrom 16 May—from 1 August
Arugula——sow 22 June – 9 May
Basil18 August – 11 April25 September – 19 May16 October – 19 May
Beet——sow 22 June – 14 April
Bell Pepper27 July – 24 December25 September – 22 February16 October – 22 February
Black-eyed Susanfrom 28 April—from 20 July
Bok Choy25 May – 22 April29 June – 27 May20 July – 27 May
Borage——sow 20 July – 19 April
Broad bean——sow 22 June – 5 March
Broccoli——sow 22 June – 27 February
Brussels Sprouts17 April – 25 January1 June – 10 March22 June – 10 March
Busy Lizziefrom 27 April—from 20 July
Cabbage——sow 22 June – 4 February
Calendula——sow from 22 June
Carrot——sow 22 June – 21 March
Cauliflower20 April – 27 February1 June – 9 April22 June – 9 April
Celeriac13 April – 25 December29 June – 11 March20 July – 11 March
Celery13 April – 4 January29 June – 21 March20 July – 21 March
Celosiafrom 28 Junefrom 12 Augustfrom 2 September
Chamomile——sow 22 June – 9 April
Chayote2 April – 18 December29 June – 15 March20 July – 15 March
Chickpea——sow 22 June – 24 February
Chicory7 May – 20 March—22 June – 14 April
Chili Pepper27 July – 30 January25 September – 30 March16 October – 30 March
China asterfrom 4 Augustfrom 25 Septemberfrom 16 October
Chives——sow 22 June – 31 March
Cilantro——sow 22 June – 10 April
Corn——sow 20 July – 24 February
Corn poppy——sow from 22 June
Cosmosfrom 28 Junefrom 12 Augustfrom 2 September
Cucumber28 August – 1 March25 September – 29 March16 October – 29 March
Daikon——sow 22 June – 7 April
Delphiniumfrom 3 April—from 22 June
Dill——sow 22 June – 20 April
Edging lobeliafrom 27 April—from 20 July
Eggplant27 July – 24 December25 September – 22 February16 October – 22 February
Florence fennel15 May – 5 March29 June – 19 April20 July – 19 April
Foxglovefrom 16 March—from 22 June
Garden sorrel——sow 22 June – 8 April
Green Beans——sow 2 September – 3 March
Hollyhock——sow from 22 June
Hyssop——sow 22 June – 1 March
Kale——sow 22 June – 2 April
Kiwano9 June – 8 March11 July – 9 April1 August – 9 April
Kohlrabi——sow 22 June – 12 April
Leek23 March – 16 December1 June – 24 February22 June – 24 February
Lemon balm——sow 22 June – 4 April
Lettuce——sow 22 June – 17 April
Lisianthusfrom 6 Marchfrom 1 Junefrom 22 June
Lovage——sow from 22 June
Luffa14 August – 1 January25 September – 12 February16 October – 12 February
Marigoldfrom 18 Mayfrom 29 Junefrom 20 July
Marjoram27 July – 20 March—16 October – 19 May
Melon28 August – 17 February25 September – 16 March16 October – 16 March
Microgreens——sow 2 September – 30 May
Moringa26 August – 25 March20 October – 19 May10 November – 19 May
Moss rosefrom 4 May—from 20 July
Mustard greens——sow 22 June – 29 April
Napa cabbage27 May – 30 March29 June – 2 May20 July – 2 May
Nasturtiumfrom 22 Mayfrom 29 Junefrom 20 July
Okra14 August – 13 March25 September – 24 April16 October – 24 April
Oregano2 April – 10 March1 June – 9 May22 June – 9 May
Pansyfrom 6 Aprilfrom 1 Junefrom 22 June
Parsley——sow 22 June – 29 March
Parsnip——sow 22 June – 16 February
Peanut19 August – 7 February25 September – 15 March16 October – 15 March
Peas——sow 22 June – 31 March
Petuniafrom 24 Julyfrom 25 Septemberfrom 16 October
Physalis27 May – 4 February11 July – 20 March1 August – 20 March
Pumpkin14 August – 6 January25 September – 17 February16 October – 17 February
Purple coneflowerfrom 31 March—from 22 June
Radish——sow 22 June – 14 May
Sage13 April – 6 March1 June – 24 April22 June – 24 April
Scarlet sagefrom 20 May—from 1 August
Snapdragonfrom 28 Marchfrom 1 Junefrom 22 June
Soybean——sow 16 October – 25 March
Spinach——sow 22 June – 19 April
Stevia23 May – 26 January11 July – 15 March1 August – 15 March
Stock——sow from 22 June
Sunflower——sow from 2 September
Sweet alyssum——sow from 22 June
Sweet Corn7 June – 20 March29 June – 11 April20 July – 11 April
Sweet peafrom 20 Aprilfrom 1 Junefrom 22 June
Sweet William——sow from 22 June
Swiss Chard——sow 22 June – 14 April
Thyme——sow 22 June – 24 February
Tomato20 May – 1 January11 July – 22 February1 August – 22 February
Turnip——sow 22 June – 16 April
Watercress——sow 22 June – 27 April
Watermelon28 August – 5 February25 September – 4 March16 October – 4 March
Zinniafrom 15 Septemberfrom 20 Octoberfrom 10 November
Zucchini4 September – 6 March25 September – 27 March16 October – 27 March

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 Melo

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 °C1 August19 days later
18 °C16 October95 days later

Frost dates near Melo

Of the nearest cities on our list, the last spring frost ends earliest in Maldonado (15 July) and latest in Rivera (30 July).

CityDistanceLast spring frostFirst autumn frost
Pelotas184 km——
Tacuarembó187 km21 July14 June
Rivera209 km30 July10 June
Maldonado291 km15 July—
Santa Maria301 km16 July13 June

What to grow at home in winter in Melo

Frosts in Melo usually come from about 14 June to about 13 July. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Melo by month

Average weather in Melo over 2016–2025: the warmest month is January. Months that average 20 °C or more by day: October–April (21.9–28.8 °C). No month averages below 0 °C at night; the coldest nights, in July, average 7.8 °C. About 1404 mm of rain falls in a year, on 117 days; September is the wettest month (154 mm) and November the driest (88 mm).

MonthDay, °CNight, °CRain, mmRainy days
January28.818.611211
February28.718.59710
March26.416.910211
April2314.313610
May18.810.81209
June16.58.51239
July16.37.81299
August188.41289
September19.510.515411
October21.91211111
November25.214.3888
December27.516.61049

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

CropWhen to plant
Bearded Irisby 15 May
Crocusby 15 May
Daffodilby 15 May
Garlic16 April – end of June
Grape hyacinthby 15 May
Helleboreby 15 May
Hyacinthby 15 May
Lilyby 15 May
Ornamental onionby 15 May
Peonyby 15 May
Saffronby 15 May
Snowdropby 15 May
Tulipby 15 May
Wild garlicby 15 May

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).