Sinop climate — normals and trends
Sinop (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.1 °C and it receives 1,758 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is September (27.2 °C on average) and the coldest is January (24.3 °C). Rainfall peaks in January.
Sinop averages 0 frost days, 222 hot days (≥ 30 °C) and 199 rainy days per year.
Sinop has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.3 °C (on 16 October 1963) and the coldest 9.5 °C (on 19 July 1981).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
SinopMato Grosso
- coords
- -11.86°, -55.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.1°C
Average daily high
30.8°C
Average daily low
21.1°C
Annual rainfall
1,758mm
Sunshine / day
9.8h
Mean relative humidity
77%
Average peak wind
9.3km/h
Seasonal range
2.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
222 d/yr
Rainy days (≥ 1 mm)
199 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.1 °C
Average feels-like low
23.7 °C
Average peak gust
26.8 km/h
Tropical nights (≥ 20 °C)
309 d/yr
Solar radiation
18.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.28 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.3 °C
16 October 1963
Coldest day
9.5 °C
19 July 1981
Wettest day
206 mm
5 February 1965
Windiest day
28.7 km/h
26 January 1965
Strongest gust
74.5 km/h
26 January 1965
Hottest feels-like
44.2 °C
16 October 2017
Coldest feels-like
5.4 °C
19 July 1981
Sunniest day
12.7 h
5 December 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.1 °C | +0.2 °C | 201 mm | -104 mm |
| Feb | 30.0 °C | +1.0 °C | 147 mm | -129 mm |
| Mar | 30.4 °C | +1.2 °C | 170 mm | -82 mm |
| Apr | 30.6 °C | +1.0 °C | 109 mm | -33 mm |
| May | 31.8 °C | +1.5 °C | 9 mm | -32 mm |
| Jun | 32.8 °C | +1.4 °C | 3 mm | -2 mm |
| Jul | 33.7 °C | +1.5 °C | 0 mm | -4 mm |
| Aug | 35.5 °C | +1.4 °C | 0 mm | -9 mm |
| Sep | 35.3 °C | +1.4 °C | 49 mm | -9 mm |
| Oct | 33.5 °C | +1.8 °C | 99 mm | -56 mm |
| Nov | 31.2 °C | +1.3 °C | 160 mm | -66 mm |
| Dec | 29.0 °C | 0.0 °C | 387 mm | +101 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Sinop?
Sinop has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.1 °C and it receives 1,758 mm of precipitation per year.
What is the hottest day ever recorded in Sinop?
The hottest day measured in Sinop between 1940 and 2025 was 16 October 1963, reaching 41.3 °C.
What is the coldest day in Sinop?
The coldest day measured in Sinop between 1940 and 2025 was 19 July 1981, at 9.5 °C.
Does it snow in Sinop?
Almost never: Sinop sees virtually no snow, with about 0 frost days per year.
Has the climate of Sinop warmed?
Yes: Sinop warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sinop?
The wettest day measured in Sinop between 1940 and 2025 was 5 February 1965, with 206 mm of rain in 24 hours.
What was the windiest day in Sinop?
The windiest day measured in Sinop between 1940 and 2025 was 26 January 1965, with winds reaching 28.7 km/h.
What is the warmest month in Sinop?
The warmest month in Sinop is September (27.2 °C on average); the coldest is January (24.3 °C).
How much does it rain in Sinop?
Sinop receives on average 1,758 mm of precipitation per year, spread over about 199 rainy days.
Is it sunny in Sinop?
Sinop gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
Are there tropical nights in Sinop?
Yes: Sinop has on average 309 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sinop?
In Sinop, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 16 October 2017, and the lowest was 5.4 °C on 19 July 1981.
Compare Sinop with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sinop