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The climate of the state of Acre is of a humid equatorial type with a long rainy season and a short dry season, temperatures are stable during all seasons of the year, humidity is very high.
The rainy season extends during most of the year, while the dry season lasts only for a few months, generally between May and August / September, the average amount of annual rainfall varies between 1,900 mm and 2,500 mm. In the remaining months, between October and April the rains are intense and constant, so as to make the roads of the region impassable.
The maximum average temperatures vary, during the year, between 30 ° C and 33 ° C, while the average minimum temperatures vary between 17 ° C and 23 ° C.
WHEN TO GO TO ACRE
The best time to visit Acre are the least rainy months between May and August / September.
THE CLIMATE OF ACRE: CLIMATE TABLES
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| RIO BRANCO (143 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days |
| January | 21,3 | 30,9 | 289,0 | 20 |
| February | 21,2 | 30,9 | 284,8 | 18 |
| March | 21,2 | 31,3 | 230,2 | 18 |
| April | 20,8 | 31,1 | 190,3 | 14 |
| May | 19,4 | 30,6 | 93,2 | 8 |
| June | 17,6 | 30,3 | 31,6 | 4 |
| July | 16,5 | 31,3 | 43,7 | 3 |
| August | 17,4 | 32,6 | 38,4 | 4 |
| September | 19,1 | 32,8 | 89,6 | 7 |
| October | 20,6 | 32,6 | 170,8 | 12 |
| November | 21,2 | 31,9 | 221,2 | 15 |
| December | 21,3 | 31,2 | 264,7 | 17 |
| YEAR | 19,8 | 31,5 | 1947,5 | 140 |
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| CRUZEIRO DO SUL (182 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days |
| January | 20,2 | 31,0 | 257,9 | 19 |
| February | 20,0 | 30,7 | 277,3 | 18 |
| March | 19,9 | 31,0 | 299,4 | 18 |
| April | 19,6 | 30,8 | 244,1 | 15 |
| May | 19,0 | 30,5 | 162,6 | 12 |
| June | 17,7 | 30,3 | 86,5 | 8 |
| July | 19,6 | 30,7 | 65,7 | 6 |
| August | 17,6 | 31,7 | 85,9 | 7 |
| September | 18,5 | 32,0 | 134,5 | 10 |
| October | 19,3 | 31,8 | 215,4 | 13 |
| November | 19,7 | 31,4 | 230,7 | 15 |
| December | 18,8 | 31,2 | 223,0 | 18 |
| YEAR | 19,0 | 31,1 | 2283,0 | 158 |
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