GreenlyLast and first frost dates in San José
Costa Rica
San José had no frost in 2016–2025, so crops are planted by warmth and rain rather than by frost dates.
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| Last spring frost | none in ten years |
|---|---|
| First autumn frost | none 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.
There is no frost season here: crops are planted by warmth and rain rather than by frost dates.
When the soil warms up in San José
The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo).
| Soil | Date |
|---|---|
| 5 °C | already in the first week of January |
| 10 °C | already in the first week of January |
| 15 °C | already in the first week of January |
| 18 °C | already in the first week of January |
Frost dates near San José
| City | Distance | Last spring frost | First autumn frost |
|---|---|---|---|
| San Isidro de El General | 76 km | — | — |
| Puntarenas | 82 km | — | — |
| Limón | 115 km | — | — |
| Liberia | 168 km | — | — |
| Bluefields | 234 km | — | — |
Seeds, seedlings and markets in San José
Within 15 km of San José OpenStreetMap lists 12 garden centres, 6 farm-supply shops, 8 plant nurseries, 27 markets and 4 farm shops (collected 20 October 2026). The nearest garden centre to the city centre is Vivero Verdolaguis, 5 km away.
- Vivero Verdolaguis — garden centre
Avenida 49 #3, Urb. Térraba., 10804 Mata de Plátano · Mon–Fri 18:00–21:00; Sat–Sun 9:00–20:00 · 5 km - Almacén Agroveterinario Dos Pinos — farm supply
Avenida 20, San José · 2 km - Vivero Los Quesada — plant nursery
Transversal 25A, San José · 2 km - Mercado El Registro — market
Avenida 4, San José · 0 km - Agroservicios El Salitre S.A. — farm shop
Calle 1, Santa Ana · 11 km - Agropecuaria Santo Domingo — garden centre
Avenida del Comercio, Santo Domingo · 6 km
Places: © OpenStreetMap contributors, ODbL.
San José: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in San José by month
Average weather in San José over 2016–2025: the warmest month is May. Months that average 20 °C or more by day: January–December (21.3–23.2 °C). No month averages below 0 °C at night; the coldest nights, in February, average 14.3 °C. About 4125 mm of rain falls in a year, on 295 days; October is the wettest month (605 mm) and February the driest (60 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 21.4 | 14.6 | 105 | 18 |
| February | 22.1 | 14.3 | 60 | 11 |
| March | 22.8 | 14.7 | 70 | 16 |
| April | 23.1 | 15.6 | 193 | 22 |
| May | 23.2 | 16.4 | 453 | 29 |
| June | 22.6 | 16.3 | 528 | 30 |
| July | 22.3 | 16.3 | 427 | 29 |
| August | 22.6 | 16.1 | 512 | 30 |
| September | 22.9 | 15.9 | 597 | 30 |
| October | 22.4 | 15.8 | 605 | 30 |
| November | 21.6 | 15.9 | 400 | 28 |
| December | 21.3 | 15 | 175 | 22 |
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).
