Last and first frost dates in Huaraz

When is the last frost in Huaraz?

The last frost in Huaraz usually comes around 5 December: 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 14 November, while corn waits until 12 December.

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 Huaraz

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 Huaraz

Weather in Huaraz by month

Average weather in Huaraz over 2016–2025: the warmest month is August. Months that average 20 °C or more by day: August (20.1 °C). No month averages below 0 °C at night; the coldest nights, in July, average 4.4 °C. About 1664 mm of rain falls in a year, on 220 days; March is the wettest month (287 mm) and July the driest (13 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).