
| Month | Normal- 2006 | Actual (Millimeter) | ||||||
| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | ||
| January | 14 | 6 | 0 | 19 | 0 | 1 | 15 | 0 |
| February | 20 | 55 | 0 | 1 | 60 | 0 | 19 | 0 |
| March | 27 | 0 | 34 | 24 | 53 | 4 | 25 | 15 |
| April | 25 | 12 | 19 | 17 | 18 | 57 | 20 | 25 |
| May | 90 | 101 | 140 | 84 | 46 | 59 | 41 | 122 |
| June | 236 | 169 | 384 | 394 | 220 | 191 | 140 | 208 |
| July | 291 | 254 | 334 | 160 | 268 | 259 | 250 | 381 |
| August | 272 | 156 | 294 | 306 | 244 | 392 | 204 | 277 |
| September | 208 | 240 | 137 | 269 | 112 | 161 | 130 | 217 |
| October | 114 | 40 | 92 | 106 | 214 | 91 | 209 | 16 |
| November | 10 | 0 | 0 | 3 | 18 | 0 | 9 | 15 |
| December | 7 | 0 | 0 | 0 | 7 | 5 | 17 | 0 |
| Total | 1314 | 1033 | 1434 | 1383 | 1260 | 1220 | 1079 | 1276 |