GreenlyWhen to plant tomatoes in Coimbra: from 9 April
In Coimbra, tomato: sow for seedlings from 26 January; plant into a greenhouse from 19 March; plant out into open ground from 9 April. There is no autumn frost here, so the frost dates set no end to the window. For plants and seeds, the places nearby include Tradição Loja Agrícola (farm supply, 1 km) and Bonsai Mondego (garden centre, 2 km); addresses and opening hours are below.
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Tomato in Coimbra: soil, season and weather
In Coimbra the soil, not frost, sets the date: the last frost is over around 29 January, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 9 April, 70 days later. Coimbra has no autumn frost in the median year, so frost does not end the season.
| Last spring frost | 29 January |
|---|---|
| Top 7 cm of soil at 15 °C | 9 April, 70 days after the last frost |
| Into an unheated greenhouse | from 19 March; March outside: 7.7 °C at night, 17.1 °C by day; card 16–27 °C |
| Days in the bed to the first harvest (card) | 70 |
| First harvest, if planted in this window | from 18 June |
| Daylight | 10:43 on 16 February, 13:00 on 9 April |
| Watering outdoors when fruiting (card) | every 3 days; the driest month, August, has 1 rainy day |
Tomato in Coimbra: care after planting
Planted on 9 April: in the first weeks water every 4 days.
Feeding, by the card’s schedule from that day:
- 9 April — feed: balanced (NPK)
- 7 May — feed: nitrogen
Pests and diseases of tomato to watch for:
- Bacterial canker of tomato
- Tomato leaf mould
- Late Blight
- Bacterial spot
- Fruit cracking
- Bacterial wilt (brown rot of potato)
Dates count from the first planting day of the window above; a later planting moves them by as many days.
Weather in Coimbra during the tomato season
Days average above the tomato card's 16–27 °C in July (28.8 °C) and August (29.3 °C). Nights average below 16 °C in every month of the season, from 9.6 °C to 15.8 °C.
| Month | Day, °C | Night, °C | Rain, mm | Rainy days | Daylight on the 15th |
|---|---|---|---|---|---|
| April | 19.7 | 9.6 | 123 | 13 | 13:15 |
| May | 22.8 | 11.8 | 65 | 10 | 14:23 |
| June | 25.1 | 14.1 | 46 | 8 | 15:01 |
| July | 28.8 | 15.8 | 9 | 2 | 14:46 |
| August | 29.3 | 15.7 | 7 | 1 | 13:48 |
| September | 26.5 | 14.5 | 45 | 6 | 12:30 |
ERA5 2016–2025, Open-Meteo
Tomato in nearby cities
Around Coimbra, Castelo Branco is 7 days earlier and Guarda 30 days later.
Where to buy tomato plants and seeds near Coimbra
Buy plants ready to set out from 9 April (from 19 March for an unheated greenhouse); seed for raising your own is sown from 26 January. Within 15 km of Coimbra OpenStreetMap lists 3 garden centres, 1 farm-supply shop and 12 markets (collected 27 October 2026).
- Horto Mondego — garden centre
Avenida Elísio de Moura, 3030-183 Coimbra · Mon–Fri 09:00–13:00, 14:00–18:00; Sat 09:00–13:00, 14:00–17:00 · 3 km · hortomondego.pt - Bonsai Mondego — garden centre
Rua António Gonçalves 53 Lote 17, 3040-262 Coimbra · Mon–Fri 14:00–20:00; Sat 15:00–19:00 · 2 km - Tradição Loja Agrícola — farm supply
Estrada de Coselhas 265 · Mon–Fri 09:00–13:00, 15:00–19:00; Sat 09:00–13:00 · 1 km - Mercado Municipal Dom Pedro V — market
Rua Olímpio Nicolau Fernandes, 3000-303 Coimbra · Mon–Wed 07:00–00:00; Thu–Sat 07:00–02:00 · 0 km · cm-coimbra.pt
Places: © OpenStreetMap contributors, ODbL.
- How to grow tomato
- All frost dates and weather of Coimbra
- Shops and markets: Coimbra
- Selling a surplus in Portugal
- When to plant tomatoes in Portugal
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant tomatoes in Coimbra?
In Coimbra, tomato: sow for seedlings from 26 January; plant into a greenhouse from 19 March; plant out into open ground from 9 April. There is no autumn frost here, so the frost dates set no end to the window.
When to sow tomatoes for seedlings in Coimbra?
Sow for seedlings from 26 January.
