Last and first frost dates in Calama

When is the last frost in Calama?

The last frost in Calama usually comes around 10 August: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 20 July, while corn waits until 17 August.

When to sow and plant

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. 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.

When the soil warms up in Calama

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).

Frost dates near Calama

Of the nearest cities on our list, the last spring frost ends earliest in Salta (10 August) and latest in Tarija (27 August).

Seeds, seedlings and markets in Calama

Within 15 km of Calama OpenStreetMap lists 2 garden centres and 2 markets (collected 28 October 2026). The nearest garden centre to the city centre is vivero terra nostra, 6 km away.

• vivero terra nostra — garden centre
  Ojo de Opache cascada ojoopache, calama · Mon–Sun 09:00–21:00 · 6 km
• Feria Modelo — market
  Antofagasta 1938, Calama · Mon–Sat 08:30–18:00 · 1 km
• vivero nicolas — garden centre
  Ojo de Opache 13, calama · 6 km
• Terminal Agropecuario de Calama — market
  Almirante Grau 1158, Calama · Mon–Sat 06:00–14:00 · 2 km

• Where to buy seeds and seedlings in Calama
• Selling your own harvest in Chile

Places: © OpenStreetMap contributors, ODbL.

Weather in Calama by month

Average weather in Calama over 2016–2025: the warmest month is December. Months that average 20 °C or more by day: January–December (20.7–25 °C). No month averages below 0 °C at night; the coldest nights, in August, average 6.6 °C. About 23 mm of rain falls in a year, on 3 days; February is the wettest month (6 mm) and September the driest (0 mm).

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).