GreenlyFrost dates and when to plant in the Canary Islands
Spain
None of the 5 cities in the Canary Islands had frost in 2016–2025, so crops are planted by warmth and rain rather than by frost dates.
Frost dates by city in the Canary Islands
| City | Last spring frost | First autumn frost | Frost-free days | Climate zone | Tomato: window |
|---|---|---|---|---|---|
| Arrecife | none in ten years | none in ten years | — | No frost in ten years | — |
| Las Palmas | none in ten years | none in ten years | — | No frost in ten years | — |
| Puerto del Rosario | none in ten years | none in ten years | — | No frost in ten years | — |
| Santa Cruz de La Palma | none in ten years | none in ten years | — | No frost in ten years | — |
| Santa Cruz de Tenerife | none in ten years | none in ten years | — | No frost in ten years | — |
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 plant in the Canary Islands: windows by crop
The earliest start and the latest end among the cities here, each with its city; every city’s own window is on its page. 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.
| Crop | Planting out or sowing |
|---|---|
| Garlic | Autumn planting: 1 October – end of December |
Weather by month in the Canary Islands
Across the 5 cities the warmest month is August (average days 24 … 27.6 °C) and the coldest February (average nights 10.6 … 15.3 °C). No city here averages below 0 °C at night in any month.
| Month | Day, °C | Night, °C | Rain, mm |
|---|---|---|---|
| January | 16.7 … 20.2 °C | 10.8 … 15.5 °C | 26 |
| February | 16.8 … 20.4 °C | 10.6 … 15.3 °C | 37 |
| March | 16.9 … 21.3 °C | 10.8 … 15.7 °C | 32 |
| April | 18.1 … 22.6 °C | 11.8 … 16.7 °C | 29 |
| May | 19 … 23.7 °C | 12.7 … 17.9 °C | 17 |
| June | 21 … 25 °C | 14.7 … 19.5 °C | 18 |
| July | 22.7 … 26.7 °C | 16.8 … 20.6 °C | 1 |
| August | 24 … 27.6 °C | 18 … 21.5 °C | 4 |
| September | 23.3 … 26.4 °C | 17 … 21.2 °C | 27 |
| October | 22.6 … 25.5 °C | 16.1 … 20.2 °C | 25 |
| November | 19.7 … 23.4 °C | 14 … 18.4 °C | 35 |
| December | 17.5 … 21.2 °C | 11.9 … 16.5 °C | 31 |
Day and night: the lowest … highest monthly average among the cities; rain: the middle city (ERA5 via Open-Meteo).
