GreenlySantiago: frost dates
Chile
In Santiago the last spring frost usually comes around 9 August and the first autumn frost around 18 June, which leaves about 313 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground around 23 September.
| Last spring frost | around 9 August |
|---|---|
| First autumn frost | around 18 June |
| Frost-free days | 313 days |
Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.
When to sow and plant
| Crop | Sow for seedlings | Plant out in a greenhouse | Open ground |
|---|---|---|---|
| Achocha | 16 June | 26 July | 16 August |
| Arugula | — | 28 June | sow 19 July |
| Basil | 16 August | 23 September | 14 October |
| Beet | — | 28 June | sow 19 July |
| Bell Pepper | 11 July | 23 September | 14 October |
| Black-eyed Susan | 15 June | — | 16 August |
| Bok Choy | 21 June | 26 July | 16 August |
| Broad bean | — | 28 June | sow 19 July |
| Broccoli | — | 28 June | sow 19 July |
| Brussels Sprouts | 14 May | 28 June | 19 July |
| Cabbage | — | 28 June | sow 19 July |
| Calendula | — | 28 June | sow 19 July |
| Carrot | — | — | sow 19 July |
| Cauliflower | 17 May | 28 June | 19 July |
| Celeriac | 10 May | 26 July | 16 August |
| Celery | 10 May | 26 July | 16 August |
| Celosia | 24 July | 7 September | 28 September |
| Chamomile | — | 28 June | sow 19 July |
| Chayote | 14 May | 10 August | 31 August |
| Chickpea | — | — | sow 19 July |
| Chili Pepper | 24 July | 6 October | 27 October |
| China aster | 2 August | 23 September | 14 October |
| Chives | — | — | sow 19 July |
| Cilantro | — | 28 June | sow 19 July |
| Corn | — | 10 August | sow 31 August |
| Cosmos | 24 July | 7 September | 28 September |
| Cucumber | 12 August | 23 September | 14 October |
| Daikon | — | 28 June | sow 19 July |
| Delphinium | 21 May | — | 19 July |
| Dill | — | 28 June | sow 19 July |
| Eggplant | 15 July | 23 September | 14 October |
| Florence fennel | 11 June | 26 July | 16 August |
| Garden sorrel | — | 28 June | sow 19 July |
| Green Beans | 4 July | 10 August | 31 August |
| Hyssop | — | — | sow 19 July |
| Kale | — | 28 June | sow 19 July |
| Kiwano | 1 August | 2 September | 23 September |
| Kohlrabi | — | 28 June | sow 19 July |
| Leek | 19 April | 28 June | 19 July |
| Lemon balm | — | 28 June | sow 19 July |
| Lettuce | — | 28 June | sow 19 July |
| Lisianthus | 2 April | 28 June | 19 July |
| Lovage | — | — | sow 19 July |
| Luffa | 12 August | 23 September | 14 October |
| Marigold | 14 June | 26 July | 16 August |
| Melon | 2 August | 23 September | 14 October |
| Microgreens | — | 7 September | sow 28 September |
| Moringa | 12 August | 6 October | 27 October |
| Mustard greens | — | 28 June | sow 19 July |
| Napa cabbage | 23 June | 26 July | 16 August |
| Nasturtium | 18 June | 26 July | 16 August |
| Okra | 12 August | 23 September | 14 October |
| Oregano | 29 April | 28 June | 19 July |
| Pansy | 3 May | 28 June | 19 July |
| Parsley | — | 28 June | sow 19 July |
| Parsnip | — | — | sow 19 July |
| Peanut | 17 August | 23 September | 14 October |
| Peas | — | 28 June | sow 19 July |
| Petunia | 22 July | 23 September | 14 October |
| Physalis | 19 July | 2 September | 23 September |
| Pumpkin | 27 July | 2 September | 23 September |
| Purple coneflower | 18 May | — | 19 July |
| Radish | — | — | sow 19 July |
| Sage | 10 May | 28 June | 19 July |
| Snapdragon | 24 April | 28 June | 19 July |
| Spinach | — | 28 June | sow 19 July |
| Stevia | 15 July | 2 September | 23 September |
| Stock | — | 28 June | sow 19 July |
| Sunflower | — | 7 September | sow 28 September |
| Sweet Corn | — | 10 August | sow 31 August |
| Sweet pea | 17 May | 28 June | 19 July |
| Sweet William | — | — | sow 19 July |
| Swiss Chard | — | 28 June | sow 19 July |
| Thyme | — | 28 June | sow 19 July |
| Tomato | 7 July | 2 September | 23 September |
| Turnip | — | 28 June | sow 19 July |
| Watercress | — | 28 June | sow 19 July |
| Watermelon | 22 August | 23 September | 14 October |
| Zinnia | 1 September | 6 October | 27 October |
| Zucchini | 1 August | 2 September | 23 September |
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.
Santiago: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in Santiago by month
Average weather in Santiago over 2016–2025: the warmest month is January, the wettest June.
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 30.5 | 15.9 | 13 | 1 |
| February | 30.5 | 16.1 | 6 | 1 |
| March | 28.5 | 14.4 | 4 | 1 |
| April | 23.7 | 11.4 | 49 | 3 |
| May | 19.1 | 8.6 | 55 | 5 |
| June | 15.5 | 6 | 123 | 7 |
| July | 15.5 | 5.5 | 65 | 5 |
| August | 16.8 | 6.3 | 84 | 6 |
| September | 19.5 | 8.1 | 37 | 4 |
| October | 23 | 10.1 | 29 | 4 |
| November | 26.9 | 12.5 | 14 | 2 |
| December | 29.5 | 14.6 | 5 | 1 |
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).
Planted in autumn
| Crop | Plant around |
|---|---|
| Bearded Iris | 19 May |
| Crocus | 19 May |
| Daffodil | 19 May |
| Garlic | 19 May |
| Hyacinth | 19 May |
| Lily | 19 May |
| Peony | 19 May |
| Saffron | 19 May |
| Tulip | 19 May |
| Wild garlic | 19 May |
A month before the first autumn frost, so the roots grow before winter.