Histórico de chuvas dos últimos 26 anos (em mm)
| Ano/mês | Jan | Fev | Mar | Abr | Mai | Jun | Jul | Ago | Set | Out | Nov | Dez | Total |
| 1995 | 102,0 | 493,0 | 211,0 | 47,0 | 73,0 | 19,0 | 30,0 | 0,0 | 59,0 | 116,0 | 100,0 | 275,0 | 1.525,0 |
| 1996 | 287,0 | 100,0 | 119,0 | 84,0 | 56,0 | 28,0 | 0,0 | 15,0 | 202,0 | 76,0 | 147,0 | 186,0 | 1.300,0 |
| 1997 | 502,0 | 231,0 | 54,0 | 60,0 | 113,0 | 226,0 | 43,0 | 0,0 | 65,0 | 104,0 | 229,0 | 195,0 | 1.822,0 |
| 1998 | 168,0 | 256,0 | 266,0 | 97,0 | 98,0 | 8,0 | 4,0 | 70,0 | 78,0 | 207,0 | 40,0 | 413,0 | 1.705,0 |
| 1999 | 429,0 | 218,0 | 49,0 | 112,0 | 85,0 | 96,0 | 0,0 | 0,0 | 133,0 | 90,0 | 37,0 | 217,0 | 1.466,0 |
| 2000 | 487,0 | 283,0 | 248,0 | 5,0 | 10,0 | 13,0 | 60,0 | 73,0 | 125,0 | 36,0 | 332,0 | 200,0 | 1.872,0 |
| 2001 | 289,0 | 178,0 | 192,0 | 47,0 | 70,0 | 40,0 | 10,0 | 70,0 | 72,0 | 199,0 | 185,0 | 215,0 | 1.567,0 |
| 2002 | 387,0 | 282,0 | 133,0 | 19,0 | 104,0 | 0,0 | 50,0 | 46,0 | 54,0 | 10,0 | 138,0 | 257,0 | 1.480,0 |
| 2003 | 442,0 | 124,5 | 118,0 | 86,0 | 59,0 | 15,0 | 5,0 | 31,0 | 18,0 | 115,0 | 341,0 | 162,0 | 1.516,5 |
| 2004 | 231,0 | 289,0 | 97,0 | 125,0 | 238,0 | 53,0 | 64,0 | 0,0 | 10,0 | 162,0 | 108,0 | 215,0 | 1.592,0 |
| 2005 | 419,0 | 143,0 | 131,0 | 74,0 | 120,0 | 53,0 | 10,0 | 7,0 | 44,0 | 202,0 | 110,0 | 270,0 | 1.583,0 |
| 2006 | 263,0 | 156,0 | 269,0 | 46,0 | 5,0 | 30,0 | 13,0 | 21,0 | 58,0 | 93,0 | 106,0 | 235,0 | 1.295,0 |
| 2007 | 393,0 | 151,0 | 142,0 | 41,0 | 75,5 | 0,0 | 179,5 | 0,0 | 0,0 | 71,0 | 201,5 | 212,5 | 1.467,0 |
| 2008 | 243,0 | 228,5 | 144,5 | 125,0 | 58,0 | 43,5 | 0,0 | 62,0 | 34,0 | 130,0 | 165,5 | 212,5 | 1.446,5 |
| 2009 | 447,5 | 169,5 | 170,0 | 133,5 | 71,0 | 23,5 | 75,5 | 157,0 | 134,0 | 234,0 | 213,5 | 324,5 | 2.153,5 |
| 2010 | 329,0 | 162,0 | 128,0 | 172,5 | 24,0 | 18,0 | 40,0 | 0,0 | 102,0 | 100,0 | 52,0 | 430,0 | 1.557,5 |
| 2011 | 359,5 | 229,5 | 296,5 | 112,0 | 4,5 | 35,0 | 3,6 | 26,0 | 0,0 | 161,5 | 190,5 | 131,0 | 1.549,6 |
| 2012 | 332,0 | 112,0 | 54,5 | 144,5 | 77,0 | 204,5 | 16,5 | 0,0 | 75,0 | 86,0 | 64,5 | 315,5 | 1.482,0 |
| 2013 | 251,5 | 215,0 | 184,5 | 77,0 | 168,0 | 102,0 | 34,0 | 0,0 | 69,5 | 106,5 | 141,5 | 220,5 | 1.570,0 |
| 2014 | 112,5 | 84,0 | 111,0 | 35,0 | 80,0 | 7,0 | 24,0 | 9,5 | 105,0 | 14,8 | 197,0 | 154,0 | 933,8 |
| 2015 | 187,0 | 185,5 | 231,0 | 60,0 | 115,5 | 10,0 | 61,0 | 27,0 | 140,0 | 108,0 | 287,5 | 214,0 | 1.626,5 |
| 2016 | 376,0 | 125,0 | 79,5 | 23,0 | 221,0 | 94,5 | 0,0 | 64,0 | 18,0 | 243,0 | 48,0 | 266,5 | 1.558,5 |
| 2017 | 421,0 | 42,0 | 55,0 | 118,0 | 294,0 | 5,5 | 0,0 | 47,5 | 19,0 | 90,0 | 214,0 | 168,0 | 1.474,0 |
| 2018 | 200,0 | 128,0 | 174,5 | 9,0 | 38,0 | 0,0 | 1,0 | 116,0 | 109,0 | 177,0 | 188,0 | 24,5 | 1.165,0 |
| 2019 | 202,0 | 235,0 | 129,0 | 89,0 | 15,0 | 20,0 | 17,5 | 20,0 | 37,0 | 101,0 | 118,0 | 92,0 | 1.075,5 |
| 2020 | 211,0 | 292,0 | 88,0 | 12,0 | 29,0 | 88,0 | 0,0 | 33,0 | 9,0 | 45,0 | 112,0 | 268,0 | 1.187,0 |
| 2021 | 158,5 | 115,0 | 114,0 | 24,0 | 10,0 | 31,0 | 13,0 | 13,0 | 15,0 | 155,0 | 188,0 | 150,0 | 986,5 |
| 2022 | 312,0 | 120,0 | 117,0 | 29,0 | 47,0 | 14,0 | 0 | 27,0 | 108,0 | 82,0 | 60,0 | 302,0 | 1.218,0 |
| Média | 305,0 | 190,9 | 146,6 | 71,6 | 84,2 | 45,6 | 26,9 | 33,3 | 67,6 | 118,3 | 154,0 | 225,9 | 1.470,5 |
Histórico das últimas décadas (em mm)
