
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 12 | 2 | 2 | 32 | 17 | 21 | 19 | 0 |
| February | 16 | 25 | 13 | 0 | 75 | 11 | 5 | 4 |
| March | 34 | 0 | 5 | 42 | 27 | 32 | 55 | 7 |
| April | 109 | 143 | 72 | 99 | 188 | 89 | 50 | 56 |
| May | 257 | 385 | 281 | 159 | 232 | 361 | 387 | 177 |
| June | 579 | 783 | 503 | 513 | 625 | 626 | 501 | 589 |
| July | 765 | 622 | 517 | 1195 | 840 | 796 | 598 | 643 |
| August | 639 | 670 | 611 | 310 | 648 | 300 | 606 | 553 |
| September | 422 | 463 | 375 | 221 | 456 | 425 | 138 | 876 |
| October | 146 | 26 | 325 | 65 | 262 | 175 | 131 | 97 |
| November | 10 | 24 | 23 | 0 | 12 | 0 | 0 | 5 |
| December | 11 | 0 | 0 | 0 | 17 | 5 | 0 | 8 |
| Total | 3000 | 3123 | 2727 | 2636 | 3399 | 2841 | 2490 | 3015 |