Frost dates in La Paz: last spring frost and first autumn frost
When is it safe to plant out in La Paz, 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 La Paz and how sure they are
| Early year (1 in 10) | Typical (median) | Late year (1 in 10) | |
|---|---|---|---|
| Last spring frost | 30 September | 29 October | 26 November |
| First autumn frost | 2 March | 14 April | 11 May |
In a typical year the last frost in La Paz falls around 29 October and the first one around 14 April, leaving about 165 frost-free days (between 127 and 207 in 8 years out of 10). To be safe, plant tender crops after 26 November: by then the last frost has passed in 9 years out of 10. Bring them in before 2 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 La Paz
| Month | Average low | Coldest night (avg) | Record low | Frost nights | Years with frost |
|---|---|---|---|---|---|
| January | 5.6 °C | 2.8 °C | 0.5 °C | 0 | 0% |
| February | 5.4 °C | 2.3 °C | -0.8 °C | 0.1 | 11% |
| March | 5.3 °C | 1.6 °C | -4.1 °C | 0.4 | 22% |
| April | 4.2 °C | -1 °C | -3.7 °C | 1.6 | 71% |
| May | 1.6 °C | -3.4 °C | -4.7 °C | 9.7 | 100% |
| June | 0.2 °C | -3.9 °C | -6 °C | 15.1 | 100% |
| July | -0.4 °C | -4.1 °C | -5.6 °C | 18 | 100% |
| August | 0.6 °C | -4 °C | -5.9 °C | 13.2 | 100% |
| September | 2.7 °C | -2.8 °C | -5.4 °C | 4.7 | 93% |
| October | 4.3 °C | -0.8 °C | -4 °C | 1.5 | 71% |
| November | 5 °C | 0.7 °C | -3.1 °C | 1.1 | 42% |
| December | 5.5 °C | 2.3 °C | -3.2 °C | 0.2 | 11% |
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 La Paz
The live temperature layer of the map (NOAA GFS forecast): watch the cold nights coming hour by hour.
More for La Paz
Weather in La Paz now · Will it rain today in La Paz? · Open the temperature map on La Paz
Questions
- When is the last frost in La Paz?
- On average around 29 October. In an early year the last frost comes by 30 September, in a late one (1 year in 10) after 26 November.
- When is the first frost in La Paz?
- On average around 14 April. In 1 year in 10 it comes before 2 March, in a mild year not until 11 May.
- How long is the growing season in La Paz?
- About 165 frost-free days between the last spring frost and the first autumn frost, from 127 in a short year to 207 in a long one.
- When can I plant tomatoes in La Paz?
- Frost-tender plants such as tomatoes, peppers, beans and courgettes go out after the last frost: after 26 November the risk is down to 1 year in 10. Hardy crops can go earlier.
- How cold does it get in La Paz?
- The coldest night of winter averages -4.7 °C; the lowest since 1981 was -6 °C in 1996.
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 La Paz (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.