When to plant tomatoes in Galway: 31 May – 8 August

In Galway, tomato: sow for seedlings from 19 March to 17 June; plant into a greenhouse from 10 May to 8 August; plant out into open ground from 31 May to 8 August. For plants and seeds, the places nearby include Woodie's Garden Centre (garden centre, 1 km) and Dangan House Garden Centre (garden centre, 3 km); addresses and opening hours are below.

Tomato in Galway: soil, season and weather

In Galway the soil, not frost, sets the date: the last frost is over around 17 March, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 31 May, 75 days later.

Last spring frost	17 March
Top 7 cm of soil at 15 °C	31 May, 75 days after the last frost
Into an unheated greenhouse	10 May – 8 August; May outside: 8.6 °C at night, 16 °C by day; card 16–27 °C
First autumn frost	28 November, 181 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	9 August – 17 October
Days left for picking	111
Daylight	13:32 on 9 April, 16:35 on 31 May
Watering outdoors when fruiting (card)	every 3 days; the driest month, May, has 14 rainy days

Tomato in Galway: care after planting

Planted on 31 May: in the first weeks water every 4 days.

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

31 May — feed: balanced (NPK)
28 June — feed: nitrogen

Pests and diseases of tomato 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 Galway during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, July, averages 18.6 °C. Months that stay below 16 °C even by day on average: October (13.8 °C) and November (10.6 °C). Nights average below 16 °C in every month of the season, from 6.1 °C to 12.8 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
May	16	8.6	73	14	15:50
June	17.6	11.2	96	17	16:57
July	18.6	12.5	119	17	16:30
August	18.5	12.8	140	19	14:50
September	16.7	10.9	111	17	12:45
October	13.8	8.9	141	19	10:40
November	10.6	6.1	122	16	8:41

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

1 of the nearest cities share Galway's date.

City	Distance	Date	Difference
Limerick	73 km	2 June – 1 August	2 days later
Athlone	76 km	2 June – 6 August	2 days later
Sligo	118 km	6 June – 1 August	6 days later
Tralee	119 km	31 May – 2 August	same day
Kilkenny	139 km	16 June – 31 July	16 days later
Cork	157 km	10 June – 1 August	10 days later

Where to buy tomato plants and seeds near Galway

Buy plants ready to set out from 31 May to 8 August (from 10 May to 8 August for an unheated greenhouse); seed for raising your own is sown from 19 March to 17 June. Within 15 km of Galway OpenStreetMap lists 9 garden centres, 1 plant nursery and 1 farm shop (collected 20 October 2026).

Dangan House Garden Centre — garden centre
Mon–Sat 09:00–18:00 · 3 km · galwaygardencentre.ie
B&Q Garden Centre — garden centre
Western Distributor Road, Galway · Mon–Sat 08:00–20:00; Sun 10:00–18:00 · 3 km
Woodie's Garden Centre — garden centre
Headford Road, Galway · 1 km
Horkans Garden Centre — garden centre
Mon–Sat 09:30–18:00; Sun 12:00–18:00 · 9 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.

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