
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 11 | 8 | 0 | 27 | 0 | 2 | 18 | 0 |
| February | 10 | 54 | 1 | 0 | 17 | 3 | 0 | 0 |
| March | 40 | 0 | 27 | 21 | 35 | 6 | 113 | 1 |
| April | 48 | 64 | 41 | 51 | 20 | 69 | 45 | 52 |
| May | 125 | 204 | 150 | 107 | 125 | 41 | 75 | 108 |
| June | 278 | 275 | 517 | 368 | 368 | 264 | 227 | 187 |
| July | 405 | 471 | 378 | 210 | 308 | 280 | 548 | 636 |
| August | 361 | 207 | 261 | 374 | 256 | 468 | 310 | 374 |
| September | 332 | 258 | 227 | 219 | 172 | 171 | 292 | 490 |
| October | 208 | 102 | 172 | 91 | 410 | 295 | 527 | 42 |
| November | 37 | 2 | 18 | 84 | 11 | 0 | 0 | 2 |
| December | 6 | 0 | 0 | 0 | 32 | 0 | 0 | 0 |
| Total | 1861 | 1645 | 1792 | 1552 | 1754 | 1599 | 2155 | 1892 |