When to plant watermelons in Ayacucho: 7 November – 19 February

In Ayacucho, watermelon: sow for seedlings from 19 September to 22 January; plant into a greenhouse from 17 October to 19 February; plant out into open ground from 7 November to 19 February.

Watermelon in Ayacucho: soil, season and weather

In Ayacucho 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 7 November, 94 days later.

Last spring frost	5 August
Top 7 cm of soil at 18 °C	7 November, 94 days after the last frost
Into an unheated greenhouse	17 October – 19 February; October outside: 6.5 °C at night, 17.7 °C by day; card 18–35 °C
First autumn frost	30 May, 205 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	5 January – 18 April
Days left for picking	146
Daylight	12:19 on 10 October, 12:38 on 7 November
Watering outdoors when fruiting (card)	every 5 days; the driest month, May, has 8 rainy days

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

Watermelon in Ayacucho: care after planting

Planted on 7 November: in the first weeks water every 5 days.

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

7 November — 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 Ayacucho 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 °C. Months that stay below 18 °C even by day on average: December–May (14.8–16.7 °C). Nights average below 18 °C in every month of the season, from 5 °C to 7.7 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
November	18	6.9	90	18	12:43
December	16.7	7.5	118	22	12:54
January	15.4	7.4	159	25	12:49
February	15.2	7.7	142	24	12:31
March	14.8	7.6	144	25	12:11
April	15.2	6.4	51	14	11:49
May	15.6	5	31	8	11:31

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Ayacucho, Cochabamba is 66 days earlier and Potosí 21 days later.

City	Distance	Date	Difference
Cusco	247 km	24 November – 5 March	17 days later
Puno	541 km	13 October – 14 January	25 days earlier
La Paz	751 km	1 November – 9 January	6 days earlier
Oruro	932 km	19 October – 19 January	19 days earlier
Cochabamba	984 km	2 September – 12 March	66 days earlier
Potosí	1,151 km	28 November – 5 December	21 days later

Where to buy watermelon plants and seeds near Ayacucho

Buy plants ready to set out from 7 November to 19 February (from 17 October to 19 February for an unheated greenhouse); seed for raising your own is sown from 19 September to 22 January. Within 15 km of Ayacucho OpenStreetMap lists 21 farm-supply shops, 12 markets and 1 farm shop (collected 28 October 2026).

Mercado San José — market
3 km
Mercado Señor de Arequipa — market
1 km
Plaza Market — market
1 km
Mercado Playa Grau — farm shop
1 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