
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 11 | 0 | 2 | 44 | 5 | 17 | 16 | 0 |
| February | 10 | 19 | 2 | 0 | 36 | 0 | 7 | 0 |
| March | 13 | 1 | 7 | 7 | 31 | 1 | 33 | 8 |
| April | 77 | 115 | 18 | 171 | 66 | 56 | 55 | 58 |
| May | 182 | 295 | 240 | 182 | 174 | 134 | 89 | 140 |
| June | 323 | 412 | 285 | 359 | 460 | 266 | 272 | 208 |
| July | 516 | 386 | 217 | 682 | 519 | 539 | 440 | 362 |
| August | 382 | 342 | 374 | 186 | 193 | 202 | 414 | 167 |
| September | 383 | 373 | 700 | 294 | 217 | 197 | 240 | 259 |
| October | 146 | 12 | 361 | 15 | 245 | 100 | 260 | 43 |
| November | 7 | 0 | 53 | 3 | 0 | 0 | 0 | 7 |
| December | 9 | 0 | 0 | 0 | 25 | 1 | 0 | 9 |
| Total | 2059 | 1955 | 2259 | 1943 | 1971 | 1513 | 1826 | 1261 |