When to plant watermelons in Ensenada: 29 March – 4 September

In Ensenada, watermelon: sow for seedlings from 8 February to 7 August; plant into a greenhouse from 8 March to 4 September; plant out into open ground from 29 March to 4 September.

Watermelon in Ensenada: soil, season and weather

In Ensenada the soil, not frost, sets the date: the last frost is over around 16 February, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 29 March, 41 days later.

Last spring frost	16 February
Top 7 cm of soil at 18 °C	29 March, 41 days after the last frost
Into an unheated greenhouse	8 March – 4 September; March outside: 8.5 °C at night, 18.1 °C by day; card 18–35 °C
First autumn frost	14 December, 260 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	27 May – 2 November
Days left for picking	201
Daylight	11:29 on 1 March, 12:24 on 29 March
Watering outdoors when fruiting (card)	every 5 days; the driest month, June, has 0 rainy days

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

Watermelon in Ensenada: care after planting

Planted on 29 March: in the first weeks water every 5 days.

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

29 March — 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 Ensenada during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, August, averages 28.3 °C. Nights average below 18 °C in March–June and October–December (8.1–15.4 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
March	18.1	8.5	65	8	11:57
April	20.4	11	17	3	12:57
May	20.6	12.3	14	3	13:46
June	24.4	15.4	1	0	14:13
July	27.1	18.2	1	0	14:03
August	28.3	19.5	6	0	13:20
September	27.2	18.4	14	2	12:24
October	25.5	14.7	6	2	11:26
November	22.3	10.6	29	3	10:33
December	19.1	8.1	48	6	10:05

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Ensenada, Phoenix is 34 days earlier and Santa Barbara 46 days later.

City	Distance	Date	Difference
Riverside	243 km	2 April – 9 September	4 days later
Santa Barbara	405 km	14 May – 5 September	46 days later
Bakersfield	449 km	2 April – 4 September	4 days later
Phoenix	459 km	23 February – 19 September	34 days earlier
Las Vegas	497 km	1 April – 2 September	3 days later
Tucson	536 km	7 March – 8 September	22 days earlier

Where to buy watermelon plants and seeds near Ensenada

Buy plants ready to set out from 29 March to 4 September (from 8 March to 4 September for an unheated greenhouse); seed for raising your own is sown from 8 February to 7 August. Within 15 km of Ensenada OpenStreetMap lists 3 markets (collected 27 October 2026).

Los Globos — market
Calle 9na · 0 km
Mayorista Ambar — market
2 km
Mercado Negro — market
3 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