
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 15 | 8 | 0 | 27 | 0 | 12 | 23 | 0 |
| February | 15 | 53 | 0 | 0 | 13 | 0 | 6 | 0 |
| March | 37 | 3 | 22 | 27 | 77 | 2 | 77 | 1 |
| April | 47 | 63 | 24 | 94 | 22 | 87 | 23 | 16 |
| May | 123 | 197 | 240 | 116 | 87 | 69 | 44 | 82 |
| June | 219 | 269 | 418 | 254 | 202 | 169 | 170 | 139 |
| July | 282 | 324 | 188 | 331 | 211 | 130 | 234 | 308 |
| August | 211 | 213 | 151 | 265 | 145 | 183 | 126 | 201 |
| September | 272 | 458 | 182 | 172 | 131 | 439 | 128 | 362 |
| October | 134 | 47 | 195 | 51 | 272 | 127 | 359 | 28 |
| November | 37 | 0 | 4 | 38 | 0 | 0 | 0 | 6 |
| December | 4 | 0 | 0 | 0 | 12 | 6 | 5 | 0 |
| Total | 1396 | 1635 | 1424 | 1375 | 1172 | 1224 | 1195 | 1143 |