When to plant watermelons in Sucre: 21 August – 21 March

In Sucre, watermelon: sow for seedlings from 3 July to 22 February; plant into a greenhouse from 31 July to 21 March; plant out into open ground from 21 August to 21 March.

Watermelon in Sucre: soil, season and weather

In Sucre the soil, not frost, sets the date: the last frost is over around 5 August, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 21 August, 16 days later.

Last spring frost	5 August
Top 7 cm of soil at 18 °C	21 August, 16 days after the last frost
Into an unheated greenhouse	31 July – 21 March; July outside: 6.2 °C at night, 20.1 °C by day; card 18–35 °C
First autumn frost	30 June, 314 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	19 October – 19 May
Days left for picking	255
Daylight	11:10 on 24 July, 11:33 on 21 August
Watering outdoors when fruiting (card)	every 5 days; the driest month, June, has 2 rainy days

The same dates in Sucre hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Sucre: care after planting

Planted on 21 August: in the first weeks water every 5 days.

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

21 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 Sucre during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, October, averages 22.9 °C. Nights average below 18 °C in every month of the season, from 6.1 °C to 11.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
August	20.9	6.5	17	4	11:27
September	22.6	9.1	28	7	11:58
October	22.9	10.2	63	13	12:31
November	22.5	10.8	81	15	13:00
December	20.6	11.2	143	22	13:16
January	20.2	11.1	153	23	13:09
February	19.3	11	142	22	12:43
March	18.8	10.7	135	22	12:13
April	19.1	9.7	65	12	11:40
May	19.7	8	17	5	11:14
June	19.8	6.1	8	2	10:59

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

All the nearest cities on our list plant watermelon later than Sucre; the closest date is in Cochabamba, 12 days later.

City	Distance	Date	Difference
Potosí	80 km	28 November – 5 December	99 days later
Cochabamba	206 km	2 September – 12 March	12 days later
Oruro	226 km	19 October – 19 January	59 days later
Tarija	283 km	11 September – 3 March	21 days later
La Paz	416 km	1 November – 9 January	72 days later
Calama	539 km	from 9 September	19 days later

Where to buy watermelon plants and seeds near Sucre

Buy plants ready to set out from 21 August to 21 March (from 31 July to 21 March for an unheated greenhouse); seed for raising your own is sown from 3 July to 22 February. Within 15 km of Sucre OpenStreetMap lists 1 farm-supply shop and 14 markets (collected 27 October 2026).

Mercado de Lajastambo — market
6 km
Mercado Tomas Katari — market
1 km
Mercado El Morro — market
1 km
Mercado Evo Morales Ayma — market
5 km

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