Brazil: frost dates by city

The average last spring frost and first autumn frost in 37 cities of Brazil, from ten years of weather. The last spring frost comes earliest in Caxias do Sul and latest in Lages.

City	Last spring frost	First autumn frost	Frost-free days	Soil at 10 °C	Tomato: planting out	Places to buy (OpenStreetMap)
Belém	none in ten years	none in ten years	—	already in the first week of July	—	27
Belo Horizonte	none in ten years	none in ten years	—	already in the first week of July	—	15
Blumenau	none in ten years	none in ten years	—	already in the first week of July	—	23
Brasília	none in ten years	none in ten years	—	already in the first week of July	—	55
Campinas	none in ten years	none in ten years	—	already in the first week of July	—	28
Campo Grande	none in ten years	none in ten years	—	already in the first week of July	—	8
Cuiabá	none in ten years	none in ten years	—	already in the first week of July	—	23
Florianópolis	none in ten years	none in ten years	—	already in the first week of July	—	16
Fortaleza	none in ten years	none in ten years	—	already in the first week of July	—	44
Goiânia	none in ten years	none in ten years	—	already in the first week of July	—	16
Joinville	none in ten years	none in ten years	—	already in the first week of July	—	9
Juiz de Fora	none in ten years	none in ten years	—	already in the first week of July	—	1
Londrina	none in ten years	none in ten years	—	already in the first week of July	—	18
Manaus	none in ten years	none in ten years	—	already in the first week of July	—	32
Maringá	none in ten years	none in ten years	—	already in the first week of July	—	5
Natal	none in ten years	none in ten years	—	already in the first week of July	—	31
Pelotas	none in ten years	none in ten years	—	already in the first week of July	—	28
Poços de Caldas	none in ten years	none in ten years	—	already in the first week of July	—	2
Porto Alegre	none in ten years	none in ten years	—	already in the first week of July	—	26
Recife	none in ten years	none in ten years	—	already in the first week of July	—	52
Ribeirão Preto	none in ten years	none in ten years	—	already in the first week of July	—	10
Rio de Janeiro	none in ten years	none in ten years	—	already in the first week of July	—	34
Salvador	none in ten years	none in ten years	—	already in the first week of July	—	41
São José dos Campos	none in ten years	none in ten years	—	already in the first week of July	—	10
São Luís	none in ten years	none in ten years	—	already in the first week of July	—	36
São Paulo	none in ten years	none in ten years	—	already in the first week of July	—	86
Sorocaba	none in ten years	none in ten years	—	already in the first week of July	—	7
Uberlândia	none in ten years	none in ten years	—	already in the first week of July	—	17
Caxias do Sul	13 July	17 June	339 days	already in the first week of July	20 July – 25 February	19
Santa Maria	16 July	13 June	332 days	already in the first week of July	23 July – 21 February	11
Cascavel	18 July	29 June	346 days	already in the first week of July	25 July – 8 March	3
Curitiba	19 July	none in ten years	—	already in the first week of July	from 26 July	39
Passo Fundo	19 July	18 June	334 days	already in the first week of July	26 July – 26 February	4
Ponta Grossa	19 July	25 June	341 days	already in the first week of July	26 July – 4 March	5
Chapecó	3 August	24 June	325 days	already in the first week of July	10 August – 3 March	17
Guarapuava	5 August	24 June	323 days	already in the first week of July	12 August – 3 March	3
Lages	14 August	24 June	314 days	already in the first week of July	21 August – 3 March	3

The last spring frost comes 32 days later in Lages (14 August) than in Caxias do Sul (13 July). The frost-free season lasts 314–346 days.

Gardening in Brazil: climate zones and crops by region

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.