
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 7 | 2 | 1 | 8 | 4 | 22 | 12 | 0 |
| February | 13 | 42 | 0 | 0 | 58 | 0 | 11 | 0 |
| March | 26 | 33 | 0 | 18 | 60 | 2 | 41 | 12 |
| April | 59 | 101 | 8 | 123 | 38 | 76 | 10 | 62 |
| May | 125 | 153 | 232 | 117 | 119 | 83 | 110 | 105 |
| June | 258 | 324 | 338 | 185 | 300 | 332 | 87 | 178 |
| July | 361 | 173 | 238 | 206 | 380 | 490 | 528 | 220 |
| August | 301 | 160 | 208 | 317 | 120 | 237 | 398 | 260 |
| September | 329 | 469 | 230 | 366 | 234 | 160 | 188 | 405 |
| October | 195 | 43 | 302 | 33 | 331 | 515 | 194 | 71 |
| November | 5 | 0 | 0 | 8 | 0 | 0 | 0 | 15 |
| December | 9 | 0 | 0 | 0 | 8 | 2 | 0 | 1 |
| Total | 1688 | 1500 | 1557 | 1381 | 1652 | 1919 | 1579 | 1329 |