
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 13 | 7 | 0 | 29 | 0 | 0 | 25 | 0 |
| February | 11 | 40 | 2 | 0 | 10 | 0 | 4 | 0 |
| March | 51 | 1 | 41 | 23 | 64 | 19 | 159 | 10 |
| April | 51 | 39 | 32 | 66 | 9 | 61 | 65 | 41 |
| May | 109 | 135 | 147 | 86 | 85 | 30 | 105 | 117 |
| June | 262 | 308 | 351 | 350 | 328 | 315 | 172 | 210 |
| July | 277 | 253 | 228 | 246 | 253 | 266 | 328 | 427 |
| August | 287 | 144 | 263 | 334 | 236 | 354 | 302 | 383 |
| September | 330 | 266 | 178 | 479 | 145 | 161 | 463 | 433 |
| October | 253 | 95 | 190 | 83 | 584 | 299 | 636 | 70 |
| November | 33 | 8 | 23 | 89 | 13 | 0 | 0 | 12 |
| December | 6 | 0 | 0 | 0 | 32 | 0 | 0 | 0 |
| Total | 1683 | 1296 | 1455 | 1785 | 1759 | 1505 | 2259 | 1703 |