When to plant cucumbers in Santarém: from 6 May

In Santarém, cucumber: sow for seedlings from 18 March; plant into a greenhouse from 15 April; plant out into open ground from 6 May. There is no autumn frost here, so the frost dates set no end to the window.

Cucumber in Santarém: soil, season and weather

In Santarém the soil, not frost, sets the date: the last frost is over around 15 January, but the top 7 cm of soil reaches 18 °C — the minimum on the cucumber card — only around 6 May, 111 days later. Santarém has no autumn frost in the median year, so frost does not end the season.

Last spring frost	15 January
Top 7 cm of soil at 18 °C	6 May, 111 days after the last frost
Into an unheated greenhouse	from 15 April; April outside: 10.7 °C at night, 20.5 °C by day; card 18–25 °C
Days in the bed to the first harvest (card)	34
First harvest, if planted in this window	from 9 June
Daylight	12:55 on 8 April, 14:01 on 6 May
Watering outdoors when fruiting (card)	every 2 days; the driest month, August, has 1 rainy day

The same dates in Santarém hold for Bell Pepper, Eggplant, Zucchini, Pumpkin and Watermelon.

Cucumber in Santarém: care after planting

Planted on 6 May: in the first weeks water every 4 days.

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

13 May — feed: nitrogen

Pests and diseases of cucumber 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 Santarém during the cucumber season

No month of the season averages above the cucumber card's 18–35 °C by day; the warmest, August, averages 30.9 °C. Nights average below 18 °C in May–July and September, October (13.3–17.6 °C).

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	24.2	13.3	44	6	14:19
June	26.7	15.7	21	5	14:55
July	30.2	17.6	4	1	14:41
August	30.9	18	3	1	13:44
September	28.1	16.6	33	4	12:29
October	24.5	14.5	79	9	11:13

ERA5 2016–2025, Open-Meteo

Cucumber in nearby cities

Around Santarém, Beja is 19 days earlier and Leiria 6 days later.

City	Distance	Date	Difference
Leiria	58 km	from 12 May	6 days later
Évora	100 km	from 5 May	1 day earlier
Coimbra	111 km	from 12 May	6 days later
Castelo Branco	122 km	30 April – 11 October	6 days earlier
Badajoz	154 km	3 May – 1 October	3 days earlier
Beja	154 km	17 April – 13 October	19 days earlier

Where to buy cucumber plants and seeds near Santarém

Buy plants ready to set out from 6 May (from 15 April for an unheated greenhouse); seed for raising your own is sown from 18 March. Within 15 km of Santarém OpenStreetMap lists 3 farm-supply shops and 8 markets (collected 27 October 2026).

Mercado de Almeirim — market
6 km
Mercado Municipal — market
10 km
Mercado Municipal de Benfica do Ribatejo — market
10 km
Mercado Municipal — market
12 km

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