GreenlyWhen to plant watermelons in Salto: from 22 August
In Salto, watermelon: sow for seedlings from 4 July; plant into a greenhouse from 1 August; plant out into open ground from 22 August. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Vivero Juan José (garden centre, 9 km); addresses and opening hours are below.
Your location is not available. Pick your city from the list below.
Watermelon in Salto: soil, season and weather
In Salto the soil, not frost, sets the date: the last frost is over around 10 July, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 22 August, 43 days later. Salto has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 10 July |
|---|---|
| Top 7 cm of soil at 18 °C | 22 August, 43 days after the last frost |
| Into an unheated greenhouse | from 1 August; August outside: 9.6 °C at night, 19.5 °C by day; card 18–35 °C |
| Days in the bed to the first harvest (card) | 59 |
| First harvest, if planted in this window | from 20 October |
| Daylight | 10:27 on 25 July, 11:09 on 22 August |
| Watering outdoors when fruiting (card) | every 5 days; the driest month, August, has 7 rainy days |
The same dates in Salto hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.
Watermelon in Salto: care after planting
Planted on 22 August: in the first weeks water every 5 days.
Feeding, by the card’s schedule from that day:
- 22 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 Salto during the watermelon season
No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, January, averages 31.1 °C. Nights average below 18 °C in August–November (9.6–16.8 °C).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| August | 19.5 | 9.6 | 91 | 7 | 10:57 |
| September | 21.5 | 11.7 | 106 | 9 | 11:52 |
| October | 24.3 | 14 | 120 | 9 | 12:49 |
| November | 27.8 | 16.8 | 117 | 7 | 13:42 |
| December | 29.9 | 19.1 | 110 | 7 | 14:10 |
| January | 31.1 | 21.1 | 112 | 9 | 13:58 |
ERA5 2016–2025, Open-Meteo
Watermelon in nearby cities
All the nearest cities on our list plant watermelon later than Salto; the closest date is in Paraná, 19 days later.
| City | Distance | Date | Difference |
|---|---|---|---|
| Paysandú | 105 km | 21 September – 17 March | 30 days later |
| Tacuarembó | 191 km | 14 October – 4 March | 53 days later |
| Rivera | 236 km | 28 September – 29 February | 37 days later |
| Paraná | 247 km | from 10 September | 19 days later |
| Santa Fe | 262 km | from 20 September | 29 days later |
| Rosario | 307 km | 29 September – 5 March | 38 days later |
Where to buy watermelon plants and seeds near Salto
Buy plants ready to set out from 22 August (from 1 August for an unheated greenhouse); seed for raising your own is sown from 4 July. Within 15 km of Salto OpenStreetMap lists 3 garden centres and 3 markets (collected 20 October 2026).
- Vivero Juan José — garden centre
Humberto Primero 4864, 3201 Concordia · Mon–Sat 08:00–18:00 · 9 km - Mini-Mercado San Luis — market
San Luis, 3200 Concordia · Mon–Sat 08:00–13:00, 17:00–21:00; Sun 08:00–13:00 · 6 km - Vivero San Roque — garden centre
6 km - Vivero Zordan — garden centre
8 km
Places: © OpenStreetMap contributors, ODbL.
- How to grow watermelon
- All frost dates and weather of Salto
- Shops and markets: Salto
- Selling a surplus in Uruguay
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant watermelons in Salto?
In Salto, watermelon: sow for seedlings from 4 July; plant into a greenhouse from 1 August; plant out into open ground from 22 August. There is no autumn frost here, so the frost dates set no end to the window.
When to sow watermelons for seedlings in Salto?
Sow for seedlings from 4 July.
