
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 13 | 9 | 0 | 29 | 0 | 0 | 25 | 0 |
| February | 22 | 58 | 6 | 0 | 1 | 0 | 0 | 0 |
| March | 43 | 0 | 60 | 11 | 45 | 31 | 66 | 1 |
| April | 65 | 101 | 33 | 76 | 49 | 91 | 112 | 42 |
| May | 139 | 263 | 211 | 97 | 324 | 35 | 100 | 118 |
| June | 266 | 276 | 402 | 347 | 331 | 281 | 235 | 120 |
| July | 337 | 254 | 239 | 389 | 347 | 213 | 337 | 290 |
| August | 330 | 277 | 262 | 460 | 186 | 295 | 302 | 466 |
| September | 283 | 171 | 142 | 306 | 178 | 276 | 358 | 544 |
| October | 224 | 114 | 208 | 72 | 351 | 351 | 461 | 128 |
| November | 62 | 20 | 16 | 85 | 34 | 0 | 0 | 11 |
| December | 21 | 0 | 219 | 0 | 17 | 0 | 0 | 0 |
| Total | 1805 | 1543 | 1799 | 1872 | 1863 | 1573 | 1896 | 2020 |