1-5 PRECIPITATION BY ZONE(1999) |
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| (mm) | |||||||||||||
| Zone | January | February | March | April | May | June | July | August | September | October | November | December | Annual Average |
| The Northwest Part of Sichuan Basin | 6.3 | .8 | 17.2 | 59.1 | 52.9 | 153.8 | 170.8 | 153.0 | 110.1 | 61.1 | 19.3 | .1 | 804.3 |
| The Northeast Part of Sichuan Basin | 3.7 | 2.4 | 48.0 | 89.0 | 105.4 | 88.8 | 289.7 | 55.4 | 49.2 | 120.2 | 55.4 | 6.4 | 913.2 |
| The Central Part of Sichuan Basin | 10.0 | 3.4 | 25.4 | 85.2 | 75.3 | 227.4 | 296.1 | 118.6 | 69.3 | 70.0 | 45.8 | 8.9 | 1 035.3 |
| The Southwest Part of Sichuan Basin | 8.1 | 5.3 | 16.2 | 160.4 | 125.2 | 171.9 | 222.7 | 356.8 | 333.9 | 82.9 | 51.3 | 9.7 | 1 544.1 |
| The Southeast Part of Sichuan Basin | 22.4 | 9.9 | 27.3 | 81.4 | 175.4 | 151.7 | 160.4 | 303.8 | 185.8 | 92.2 | 63.6 | 22.4 | 1 301.0 |
| The Northwest Part of Plateau Region in the Northwest Part of Sichuan | .9 | 5.0 | 31.8 | 39.0 | 147.6 | 183.3 | 114.0 | 86.8 | 50.3 | 63.2 | 4.4 | 1.4 | 727.4 |
| The Northeast Part of Plateau Region in the Northwest Part of Sichuan | 2.7 | 4.8 | 24.9 | 59.8 | 110.2 | 117.1 | 140.3 | 84.0 | 59.3 | 120.5 | 4.4 | 2.0 | 729.5 |
| The South Part of Plateau Region in the Northwest Part of Sichuan | 2.6 | 2.6 | 3.4 | 24.8 | 72.6 | 177.2 | 215.1 | 196.4 | 94.3 | 18.9 | 13.2 | .6 | 821.5 |
| The North Part of Mountainous Region in the Southwest Part of Sichuan | 18.8 | 3.1 | 17.7 | 60.6 | 154.8 | 268.8 | 156.7 | 216.0 | 188.8 | 87.9 | 26.1 | 14.7 | 1 313.7 |
| The South Part of Mountainous Region in the Southwest Part of Sichuan | 12.9 | .0 | .0 | 2.2 | 97.2 | 132.9 | 319.8 | 142.6 | 166.4 | 54.6 | 49.6 | 2.4 | 980.5 |