When to plant tomatoes in Río Gallegos: 17 November – 15 December

In Río Gallegos, tomato: sow for seedlings from 5 September to 24 October; plant into a greenhouse from 27 October to 15 December; plant out into open ground from 17 November to 15 December.

Tomato in Río Gallegos: soil, season and weather

In Río Gallegos the soil, not frost, sets the date: the last frost is over around 16 October, but the top 7 cm of soil reaches 15 °C — the minimum on the tomato card — only around 17 November, 32 days later.

Last spring frost	16 October
Top 7 cm of soil at 15 °C	17 November, 32 days after the last frost
Into an unheated greenhouse	27 October – 15 December; October outside: 3.9 °C at night, 14.3 °C by day; card 16–27 °C
First autumn frost	5 April, 140 days after the start
Days in the bed to the first harvest (card)	70
First harvest, if planted in this window	26 January – 23 February
Days left for picking	70
Daylight	12:22 on 26 September, 15:38 on 17 November
Watering outdoors when fruiting (card)	every 3 days; the driest month, November, has 8 rainy days

Tomato in Río Gallegos: care after planting

Planted on 17 November: in the first weeks water every 4 days.

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

17 November — feed: balanced (NPK)
15 December — 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 Río Gallegos during the tomato season

No month of the season averages above the tomato card's 16–27 °C by day; the warmest, January, averages 19 °C. Months that stay below 16 °C even by day on average: March (15.6 °C) and April (11.9 °C). Nights average below 16 °C in every month of the season, from 3.4 °C to 8.2 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
November	17	5.8	30	8	15:32
December	18.3	7.5	39	10	16:37
January	19	8.2	45	11	16:08
February	18.8	8.2	36	8	14:25
March	15.6	6.2	34	9	12:33
April	11.9	3.4	31	8	10:32

ERA5 2016–2025, Open-Meteo

Tomato in nearby cities

Around Río Gallegos, Trelew is 41 days earlier and Ushuaia 32 days later.

City	Distance	Date	Difference
Punta Arenas	206 km	4 November – 16 December	13 days earlier
Ushuaia	360 km	from 19 December	32 days later
Comodoro Rivadavia	653 km	15 October – 1 February	33 days earlier
Coyhaique	704 km	from 10 December	23 days later
Trelew	976 km	7 October – 6 February	41 days earlier
Puerto Montt	1,164 km	9 December – 14 February	22 days later

Where to buy tomato plants and seeds near Río Gallegos

Buy plants ready to set out from 17 November to 15 December (from 27 October to 15 December for an unheated greenhouse); seed for raising your own is sown from 5 September to 24 October. Within 15 km of Río Gallegos OpenStreetMap lists 1 plant nursery (collected 28 October 2026).

Vivero Los Fresnos — plant nursery
0 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