Cachoeira do Arari climate — normals and trends
Cachoeira do Arari (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.5 °C and it receives 2,714 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 October (28.1 °C on average) and the coldest is February (25.3 °C). Rainfall peaks in March.
Cachoeira do Arari averages 0 frost days, 257 hot days (≥ 30 °C) and 249 rainy days per year.
Cachoeira do Arari has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.9 °C (on 31 October 2023) and the coldest 19.6 °C (on 6 August 1959).
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
Cachoeira do ArariPará
- coords
- -1.01°, -48.96°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.5°C
Average daily high
31.2°C
Average daily low
23.1°C
Annual rainfall
2,714mm
Sunshine / day
10.0h
Mean relative humidity
84%
Average peak wind
12.7km/h
Seasonal range
2.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
257 d/yr
Rainy days (≥ 1 mm)
249 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.7 °C
Average feels-like low
27.5 °C
Average peak gust
33.5 km/h
Tropical nights (≥ 20 °C)
364 d/yr
Solar radiation
18.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.64 · 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
36.9 °C
31 October 2023
Coldest day
19.6 °C
6 August 1959
Wettest day
285 mm
4 April 1966
Windiest day
25.3 km/h
4 November 1944
Strongest gust
59.4 km/h
7 October 2002
Hottest feels-like
42.9 °C
8 May 2010
Coldest feels-like
21.9 °C
6 August 1959
Sunniest day
12.0 h
8 October 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 | 30.5 °C | +0.5 °C | 385 mm | +35 mm |
| Feb | 29.7 °C | +0.3 °C | 681 mm | +262 mm |
| Mar | 29.7 °C | +0.4 °C | 799 mm | +283 mm |
| Apr | 30.7 °C | +1.1 °C | 432 mm | -46 mm |
| May | 31.7 °C | +1.5 °C | 251 mm | -98 mm |
| Jun | 31.8 °C | +1.1 °C | 147 mm | -24 mm |
| Jul | 32.2 °C | +1.1 °C | 118 mm | +7 mm |
| Aug | 32.6 °C | +0.4 °C | 89 mm | +32 mm |
| Sep | 33.1 °C | 0.0 °C | 27 mm | -8 mm |
| Oct | 33.4 °C | -0.3 °C | 34 mm | +10 mm |
| Nov | 33.4 °C | -0.1 °C | 43 mm | -3 mm |
| Dec | 32.3 °C | +0.4 °C | 98 mm | -60 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 Cachoeira do Arari?
Cachoeira do Arari has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.5 °C and it receives 2,714 mm of precipitation per year.
What is the hottest day ever recorded in Cachoeira do Arari?
The hottest day measured in Cachoeira do Arari between 1940 and 2025 was 31 October 2023, reaching 36.9 °C.
What is the coldest day in Cachoeira do Arari?
The coldest day measured in Cachoeira do Arari between 1940 and 2025 was 6 August 1959, at 19.6 °C.
Does it snow in Cachoeira do Arari?
Almost never: Cachoeira do Arari sees virtually no snow, with about 0 frost days per year.
Has the climate of Cachoeira do Arari warmed?
Yes: Cachoeira do Arari warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Cachoeira do Arari?
The wettest day measured in Cachoeira do Arari between 1940 and 2025 was 4 April 1966, with 285 mm of rain in 24 hours.
What was the windiest day in Cachoeira do Arari?
The windiest day measured in Cachoeira do Arari between 1940 and 2025 was 4 November 1944, with winds reaching 25.3 km/h.
What is the warmest month in Cachoeira do Arari?
The warmest month in Cachoeira do Arari is October (28.1 °C on average); the coldest is February (25.3 °C).
How much does it rain in Cachoeira do Arari?
Cachoeira do Arari receives on average 2,714 mm of precipitation per year, spread over about 249 rainy days.
Is it sunny in Cachoeira do Arari?
Cachoeira do Arari gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Cachoeira do Arari?
Yes: Cachoeira do Arari has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Cachoeira do Arari?
In Cachoeira do Arari, between 1940 and 2025, the highest apparent temperature reached 42.9 °C on 8 May 2010, and the lowest was 21.9 °C on 6 August 1959.
Compare Cachoeira do Arari with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Cachoeira do Arari