Frost dates in San Carlos de Bariloche: last spring frost and first autumn frost
When is it safe to plant out in San Carlos de Bariloche, and when does the first frost come? Dates from 45 years of nightly minimum temperatures (1981–2025), with how early or late they can fall.
Frost dates in San Carlos de Bariloche and how sure they are
| Early year (1 in 10) | Typical (median) | Late year (1 in 10) | |
|---|---|---|---|
| Last spring frost | 15 October | 14 November | 3 December |
| First autumn frost | 25 March | 15 April | 4 May |
In a typical year the last frost in San Carlos de Bariloche falls around 14 November and the first one around 15 April, leaving about 152 frost-free days (between 126 and 192 in 8 years out of 10). To be safe, plant tender crops after 3 December: by then the last frost has passed in 9 years out of 10. Bring them in before 25 March: in 1 year in 10 the first frost comes earlier.
Southern hemisphere: the frost season is the austral winter, so the last spring frost comes around August–October and the first autumn frost around April–June.
Frost month by month in San Carlos de Bariloche
| Month | Average low | Coldest night (avg) | Record low | Frost nights | Years with frost |
|---|---|---|---|---|---|
| January | 8.1 °C | 2.9 °C | 0.9 °C | 0 | 0% |
| February | 8.3 °C | 2.9 °C | 0.3 °C | 0 | 0% |
| March | 6.7 °C | 1.2 °C | -1.1 °C | 0.3 | 20% |
| April | 4.1 °C | -0.8 °C | -4.2 °C | 2.3 | 76% |
| May | 2 °C | -2.7 °C | -5.9 °C | 8.1 | 98% |
| June | -0.1 °C | -5.5 °C | -12.9 °C | 13.9 | 100% |
| July | -1.2 °C | -7.8 °C | -17.7 °C | 18.8 | 100% |
| August | -0.2 °C | -5 °C | -12.9 °C | 16.1 | 100% |
| September | 0.9 °C | -2.9 °C | -6.7 °C | 10.8 | 100% |
| October | 2.6 °C | -1.7 °C | -4.3 °C | 5.1 | 96% |
| November | 4.6 °C | -0.3 °C | -3.3 °C | 1.1 | 56% |
| December | 6.7 °C | 1.5 °C | -1.2 °C | 0.2 | 13% |
Frost here means a night minimum at or below 0 °C at 2 m. Frost nights is the average count per month; years with frost is how many years had at least one.
Frost alerts for your garden or field
LayEarth Business Agro sends an alert when the forecast low at your saved site drops below your threshold (0 °C by default), with frost risk, hours below zero and white or black frost for each forecast day. LayEarth Pro, from 9 USD a month, adds alerts for the places you follow.
Temperature map around San Carlos de Bariloche
The live temperature layer of the map (NOAA GFS forecast): watch the cold nights coming hour by hour.
More for San Carlos de Bariloche
Will it rain today in San Carlos de Bariloche? · Open the temperature map on San Carlos de Bariloche
Questions
- When is the last frost in San Carlos de Bariloche?
- On average around 14 November. In an early year the last frost comes by 15 October, in a late one (1 year in 10) after 3 December.
- When is the first frost in San Carlos de Bariloche?
- On average around 15 April. In 1 year in 10 it comes before 25 March, in a mild year not until 4 May.
- How long is the growing season in San Carlos de Bariloche?
- About 152 frost-free days between the last spring frost and the first autumn frost, from 126 in a short year to 192 in a long one.
- When can I plant tomatoes in San Carlos de Bariloche?
- Frost-tender plants such as tomatoes, peppers, beans and courgettes go out after the last frost: after 3 December the risk is down to 1 year in 10. Hardy crops can go earlier.
- How cold does it get in San Carlos de Bariloche?
- The coldest night of winter averages -8.7 °C; the lowest since 1981 was -17.7 °C in 2018.
Frost dates nearby
How these dates are computed
Daily minimum temperature at 2 m from NASA POWER (MERRA-2 reanalysis, public domain), 1981–2025, corrected from the ~50 km grid to the real altitude of San Carlos de Bariloche (6.5 °C per km). For each year: the last night at or below 0 °C before midsummer and the first one after it; the dates are the median and the 10% / 90% of those years. A garden in a frost pocket or a city centre can differ by days. Live temperatures: the temperature layer of the map.