
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 9 | 3 | 2 | 26 | 8 | 15 | 17 | 0 |
| February | 11 | 17 | 0 | 0 | 61 | 8 | 5 | 7 |
| March | 59 | 15 | 42 | 94 | 103 | 35 | 132 | 17 |
| April | 163 | 152 | 112 | 244 | 202 | 208 | 207 | 98 |
| May | 307 | 400 | 385 | 167 | 260 | 416 | 230 | 404 |
| June | 678 | 1021 | 529 | 471 | 630 | 647 | 438 | 625 |
| July | 958 | 818 | 473 | 1319 | 1234 | 1307 | 782 | 760 |
| August | 586 | 694 | 626 | 145 | 432 | 436 | 648 | 242 |
| September | 478 | 414 | 523 | 343 | 550 | 668 | 254 | 637 |
| October | 222 | 141 | 473 | 116 | 314 | 171 | 353 | 201 |
| November | 20 | 58 | 35 | 2 | 24 | 9 | 7 | 15 |
| December | 9 | 0 | 5 | 5 | 24 | 4 | 0 | 11 |
| Total | 3509 | 3733 | 3205 | 2932 | 3842 | 3924 | 3073 | 3017 |