- Sinop ›
- Weather by month
Sinop Weather by Month
Average temperatures, rainfall and humidity for Sinop, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Sinop month looks like before you travel — then check the live Sinop forecast for the days ahead.
Warmest month
September
37°C average high
Coolest month
July
18°C average low
Wettest month
January
102 mm of rain
Driest month
July
1 mm of rain
Average temperature and rainfall in Sinop 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 | 32°C | 23°C | 19°C / 38°C | 102 mm | 78% | 10 km/h |
| February | 32°C | 23°C | 18°C / 39°C | 59 mm | 79% | 9 km/h |
| March | 32°C | 23°C | 17°C / 39°C | 78 mm | 79% | 8 km/h |
| April | 32°C | 23°C | 13°C / 37°C | 38 mm | 78% | 8 km/h |
| May | 31°C | 21°C | 9°C / 37°C | 9 mm | 72% | 8 km/h |
| June | 31°C | 19°C | 7°C / 39°C | 5 mm | 67% | 8 km/h |
| July | 33°C | 18°C | 6°C / 42°C | 1 mm | 54% | 9 km/h |
| August | 35°C | 20°C | 9°C / 41°C | 4 mm | 45% | 10 km/h |
| September | 37°C | 23°C | 11°C / 45°C | 9 mm | 48% | 10 km/h |
| October | 35°C | 24°C | 13°C / 43°C | 45 mm | 62% | 10 km/h |
| November | 34°C | 24°C | 13°C / 41°C | 64 mm | 69% | 10 km/h |
| December | 33°C | 24°C | 20°C / 41°C | 91 mm | 75% | 10 km/h |
Best time to visit Sinop
The most comfortable time to visit Sinop is generally May to July, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around January, totalling about 506 mm a year.
Travellers who prefer heat should aim for September, when highs average 37°C. January is the month to avoid if rain would spoil your plans — it averages 102 mm, roughly 71× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sinop forecast for what is happening now.