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When to plant watermelons in San Fernando del Valle de Catamarca: 30 August – 19 March

In San Fernando del Valle de Catamarca, watermelon: sow for seedlings from 12 July to 20 February; plant into a greenhouse from 9 August to 19 March; plant out into open ground from 30 August to 19 March.

Watermelon in San Fernando del Valle de Catamarca: soil, season and weather

In San Fernando del Valle de Catamarca the soil, not frost, sets the date: the last frost is over around 15 July, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 30 August, 46 days later.

Last spring frost15 July
Top 7 cm of soil at 18 °C30 August, 46 days after the last frost
Into an unheated greenhouse9 August – 19 March; August outside: 10 °C at night, 23.3 °C by day; card 18–35 °C
First autumn frost28 June, 303 days after the start
Days in the bed to the first harvest (card)59
First harvest, if planted in this window28 October – 17 May
Days left for picking244
Daylight10:48 on 2 August, 11:28 on 30 August
Watering outdoors when fruiting (card)every 5 days; the driest month, August, has 1 rainy day

The same dates in San Fernando del Valle de Catamarca hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in San Fernando del Valle de Catamarca: care after planting

Planted on 30 August: in the first weeks water every 5 days.

Feeding, by the card’s schedule from that day:

  • 30 August — feed: balanced (NPK)

Pests and diseases of watermelon to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in San Fernando del Valle de Catamarca during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, January, averages 33.2 °C. Nights average below 18 °C in April–June and August–October (8.5–16.4 °C).

MonthDay, °CNight, °CRain, mmRainy daysDaylight on the 15th
August23.3105111:05
September26.713.214211:54
October28.916.434512:44
November31.719.840613:31
December32.621.468813:56
January33.222.592913:45
February31.721.880913:04
March29.319.663812:17
April25.516.145811:25
May21.111.730610:43
June19.38.516310:20

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

1 of the nearest cities share San Fernando del Valle de Catamarca's date.

CityDistanceDateDifference
La Rioja148 km30 August – 5 Marchsame day
San Miguel de Tucumán193 kmfrom 15 September16 days later
Córdoba362 km1 October – 5 March32 days later
Salta411 km26 September – 20 March27 days later
San Juan432 km18 September – 10 March19 days later
Copiapó463 km8 September – 14 March9 days later

Where to buy watermelon plants and seeds near San Fernando del Valle de Catamarca

Buy plants ready to set out from 30 August to 19 March (from 9 August to 19 March for an unheated greenhouse); seed for raising your own is sown from 12 July to 20 February. Within 15 km of San Fernando del Valle de Catamarca OpenStreetMap lists 6 garden centres, 2 plant nurseries and 9 markets (collected 28 October 2026).

Places: © OpenStreetMap contributors, ODbL.

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.

Questions

When to plant watermelons in San Fernando del Valle de Catamarca?

In San Fernando del Valle de Catamarca, watermelon: sow for seedlings from 12 July to 20 February; plant into a greenhouse from 9 August to 19 March; plant out into open ground from 30 August to 19 March.

When to sow watermelons for seedlings in San Fernando del Valle de Catamarca?

Sow for seedlings from 12 July to 20 February.

When is the last spring frost in San Fernando del Valle de Catamarca?

Last spring frost around 15 July, first autumn frost around 29 June.

Other crops in San Fernando del Valle de Catamarca, with their dates