
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 9 | 3 | 0 | 22 | 1 | 10 | 10 | 24 |
| February | 14 | 55 | 1 | 3 | 32 | 0 | 0 | 13 |
| March | 27 | 6 | 0 | 27 | 45 | 6 | 6 | 53 |
| April | 47 | 72 | 27 | 97 | 7 | 91 | 91 | 9 |
| May | 127 | 308 | 133 | 155 | 76 | 71 | 71 | 59 |
| June | 207 | 133 | 286 | 241 | 245 | 315 | 315 | 87 |
| July | 315 | 270 | 209 | 330 | 200 | 203 | 203 | 383 |
| August | 247 | 164 | 269 | 295 | 194 | 145 | 145 | 201 |
| September | 310 | 654 | 271 | 257 | 184 | 241 | 241 | 160 |
| October | 153 | 83 | 165 | 45 | 264 | 389 | 389 | 181 |
| November | 7 | 0 | 1 | 15 | 0 | 0 | 0 | 2 |
| December | 3 | 0 | 0 | 0 | 7 | 0 | 0 | 0 |
| Total | 1466 | 1753 | 1362 | 1487 | 1255 | 1471 | 1471 | 1172 |