When to plant watermelons in Oruro: 19 October – 19 January

In Oruro, watermelon: sow for seedlings from 31 August to 22 December; plant into a greenhouse from 28 September to 19 January; plant out into open ground from 19 October to 19 January.

Watermelon in Oruro: soil, season and weather

In Oruro the soil, not frost, sets the date: the last frost is over around 26 September, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 19 October, 23 days later.

Last spring frost	26 September
Top 7 cm of soil at 18 °C	19 October, 23 days after the last frost
Into an unheated greenhouse	28 September – 19 January; September outside: 2.5 °C at night, 17.2 °C by day; card 18–35 °C
First autumn frost	29 April, 193 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	17 December – 18 March
Days left for picking	134
Daylight	12:05 on 21 September, 12:33 on 19 October
Watering outdoors when fruiting (card)	every 5 days; the driest month, April, has 9 rainy days

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

Watermelon in Oruro: care after planting

Planted on 19 October: in the first weeks water every 5 days.

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

19 October — 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 Oruro during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, November, averages 18.9 °C. Months that stay below 18 °C even by day on average: December–April (15.5–17.2 °C). Nights average below 18 °C in every month of the season, from 3.7 °C to 5.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
October	18.2	3.9	36	10	12:29
November	18.9	5.2	48	11	12:57
December	17.2	5.7	93	20	13:12
January	16.2	5.6	115	22	13:05
February	15.7	5.8	121	22	12:41
March	15.5	5.2	100	22	12:13
April	16.4	3.7	34	9	11:42

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Oruro, Sucre is 59 days earlier and Potosí 40 days later.

City	Distance	Date	Difference
Cochabamba	118 km	2 September – 12 March	47 days earlier
La Paz	198 km	1 November – 9 January	13 days later
Sucre	226 km	21 August – 21 March	59 days earlier
Potosí	228 km	28 November – 5 December	40 days later
Puno	391 km	13 October – 14 January	6 days earlier
Tarija	467 km	11 September – 3 March	38 days earlier

Where to buy watermelon plants and seeds near Oruro

Buy plants ready to set out from 19 October to 19 January (from 28 September to 19 January for an unheated greenhouse); seed for raising your own is sown from 31 August to 22 December. Within 15 km of Oruro OpenStreetMap lists 15 markets (collected 27 October 2026).

Bartolina Sisa — market
3 km
Mercado El Paraíso — market
4 km
Mercado Venezuela — market
4 km
Roberto Young — 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