São Mateus weather by month
Warmest month
February
32°C average high
Coolest month
August
18°C average low
Wettest month
November
101 mm of rain
Driest month
September
36 mm of rain
Average temperature and rainfall in São Mateus by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 30°C | 22°C | 20°C / 35°C | 82 mm | 81% | 11 km/h |
| February | 32°C | 23°C | 21°C / 38°C | 81 mm | 78% | 10 km/h |
| March | 31°C | 22°C | 19°C / 35°C | 97 mm | 79% | 9 km/h |
| April | 29°C | 21°C | 18°C / 34°C | 94 mm | 80% | 10 km/h |
| May | 28°C | 20°C | 17°C / 34°C | 52 mm | 79% | 9 km/h |
| June | 27°C | 18°C | 14°C / 32°C | 43 mm | 80% | 10 km/h |
| July | 26°C | 18°C | 14°C / 33°C | 45 mm | 78% | 9 km/h |
| August | 27°C | 18°C | 13°C / 36°C | 45 mm | 77% | 11 km/h |
| September | 28°C | 19°C | 14°C / 37°C | 36 mm | 76% | 12 km/h |
| October | 30°C | 21°C | 18°C / 38°C | 89 mm | 77% | 12 km/h |
| November | 29°C | 21°C | 17°C / 39°C | 101 mm | 81% | 12 km/h |
| December | 29°C | 22°C | 19°C / 36°C | 89 mm | 83% | 11 km/h |
Frost and snow-likely months in São Mateus
No month in São Mateus averages a night of 2°C or below. The coldest month is August with an average low of 18°C and a record low of 13°C, so frost is rare and snow is very unlikely.
These records carry temperature and precipitation, not snowfall totals.
Best time to visit São Mateus
The most comfortable time to visit São Mateus is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around November, totalling about 853 mm a year.
Travellers who prefer heat should aim for February, when highs average 32°C. November is the month to avoid if rain would spoil your plans — it averages 101 mm, roughly 3× the rainfall of the driest month (September).
São Mateus climate: your questions
Is it going to snow in São Mateus this year?
No: the coldest month in São Mateus is August with an average low of 18°C and a record low of 13°C, so snow is very unlikely. What is falling now: São Mateus weather today.
Which months are best for visiting São Mateus?
June to August are the most comfortable months in São Mateus, with highs near 27°C. February is the warmest month, averaging 32°C by day; November is the wettest, with 101 mm; and August is the coolest, with lows near 18°C. What it is doing today: São Mateus weather today.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the São Mateus forecast for what is happening now.
Weather across Brazil right now
- Belém25°C
- Belo Horizonte22°C
- Brasília21°C
- Campinas22°C
- Campo Grande27°C
- Contagem22°C
- Cuiabá27°C
- Curitiba19°C
- Feira de Santana22°C
- Fortaleza27°C
- Goiânia25°C
- Guarulhos21°C
- Jaboatão dos Guararapes27°C
- João Pessoa24°C
- Maceió24°C
- Manaus29°C
- Natal25°C
- Osasco21°C
- Porto Alegre20°C
- Recife27°C
- Ribeirão Prêto25°C
- Rio de Janeiro24°C
- Salvador25°C
- Santo André21°C
- São Bernardo do Campo21°C
- São Gonçalo24°C
- São José dos Campos22°C
- São Luís26°C
- São Paulo21°C
- Sorocaba20°C
- Teresina28°C
- Uberlândia25°C
