
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 15 | 12 | 0 | 42 | 0 | 0 | 15 | 0 |
| February | 16 | 72 | 5 | 0 | 20 | 3 | 2 | 0 |
| March | 45 | 5 | 70 | 23 | 65 | 20 | 85 | 8 |
| April | 60 | 58 | 85 | 89 | 30 | 48 | 50 | 71 |
| May | 120 | 168 | 203 | 111 | 88 | 48 | 87 | 115 |
| June | 235 | 272 | 337 | 308 | 264 | 245 | 206 | 163 |
| July | 316 | 324 | 339 | 283 | 242 | 242 | 309 | 407 |
| August | 311 | 263 | 271 | 326 | 216 | 397 | 262 | 376 |
| September | 251 | 259 | 179 | 395 | 115 | 216 | 293 | 245 |
| October | 149 | 33 | 173 | 43 | 377 | 173 | 338 | 41 |
| November | 13 | 0 | 6 | 43 | 16 | 1 | 0 | 10 |
| December | 6 | 0 | 0 | 0 | 13 | 0 | 13 | 0 |
| Total | 1537 | 1466 | 1668 | 1663 | 1446 | 1393 | 1660 | 1436 |