| Soil temperature (˚C) | Rainfall (cm) | |||||||
| Month | 2005 | 2006 | 2007 | 2008 | 2005 | 2006 | 2007 | 2008 |
| January | 9 | 9 | 10 | 7 | 5.5 | 10.9 | 14.6 | 6.2 |
| February | 9 | 8 | 7 | 8 | 6.6 | 5.0 | 10.0 | 12.2 |
| March | 10 | 12 | 12 | 11 | 7.1 | 4.7 | 9.2 | 11.8 |
| April | 16 | 17 | 16 | 16 | 8.7 | 10.3 | 2.8 | 9.2 |
| May | 21 | 21 | 22 | 21 | 10.5 | 2.8 | 3.8 | 5.8 |
| June | 23 | 26 | 27 | 27 | 24.6 | 21.0 | 8.5 | 1.5 |
| July | 28 | 28 | 27 | 28 | 23.0 | 5.5 | 7.7 | 3.6 |
| August | 29 | 28 | 29 | 28 | 9.8 | 6.6 | 4.3 | 17.0 |
| September | 27 | 25 | 27 | 26 | 1.7 | 13.0 | 5.7 | 1.2 |
| October | 22 | 20 | 22 | 20 | 7.2 | 11.4 | 4.1 | 6.7 |
| November | 15 | 14 | 14 | 12 | 9.5 | 7.4 | 3.2 | 4.9 |
| December | 7 | 11 | 11 | 10 | 13.8 | 11.2 | 14.6 | 11.7 |