GreenlyLast and first frost dates in São Luís
Brazil
São Luís 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 São Luís
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 July |
| 10 °C | already in the first week of July |
| 15 °C | already in the first week of July |
| 18 °C | already in the first week of July |
Frost dates near São Luís
Seeds, seedlings and markets in São Luís
Within 15 km of São Luís OpenStreetMap lists 1 farm-supply shop and 35 markets (collected 27 October 2026). The nearest farm supply to the city centre is Terra Zoo - Conceiro Quixaba, 6 km away.
- Terra Zoo - Conceiro Quixaba — farm supply
Avenida Deputado Luís Eduardo Magalhães · 6 km - Feira da Mauro Fecury — market
Rua Vinte e Seis S/N, São Luís · 4 km - Mercado do Santo Antônio — market
Rua Santo Antônio, São Luís · 7 km - Comercial Jesus Maria e José — market
Avenida Aluisio Azevedo 29, 65050-140 São Luís · 9 km - Real Clima Refrigeração — market
Avenida 4 55A, 65051-775 São Luís · 9 km - Comercial Princesa — market
Avenida 4 27, 65051-775 São Luís · 9 km
Places: © OpenStreetMap contributors, ODbL.
São Luís: weather for the next 7 days
Forecast by Open-Meteo. Nights at or below 0 °C are marked as frost.
Weather in São Luís by month
Average weather in São Luís over 2016–2025: the warmest month is September. Months that average 20 °C or more by day: January–December (28.4–30.5 °C). Months that average 30 °C or more by day: August–December (30–30.5 °C). No month averages below 0 °C at night; the coldest nights, in March, average 24.3 °C. About 2420 mm of rain falls in a year, on 257 days; March is the wettest month (511 mm) and September the driest (35 mm).
| Month | Day, °C | Night, °C | Rain, mm | Rainy days |
|---|---|---|---|---|
| January | 28.8 | 24.7 | 305 | 28 |
| February | 28.5 | 24.4 | 373 | 27 |
| March | 28.4 | 24.3 | 511 | 30 |
| April | 28.9 | 24.5 | 406 | 29 |
| May | 29.4 | 24.8 | 268 | 27 |
| June | 29.5 | 24.7 | 131 | 23 |
| July | 29.8 | 24.8 | 78 | 20 |
| August | 30.2 | 25.3 | 55 | 16 |
| September | 30.5 | 25.6 | 35 | 11 |
| October | 30.5 | 25.9 | 37 | 12 |
| November | 30.5 | 25.9 | 81 | 13 |
| December | 30 | 25.7 | 140 | 21 |
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).
