| Moundou | Pala | Sarh | ||||
| Month | Vmp | VmaxE | Vmp | VmaxE | Vmp | VmaxE |
| January | 3.144 | 3.885 | 2.581 | 3.381 | 0.441 | 4.597 |
| February | 3.286 | 4.27 | 2.932 | 3.655 | 0.606 | 5.151 |
| March | 3.089 | 4.006 | 2.869 | 3.79 | 0.859 | 5.29 |
| April | 3.191 | 4.447 | 2.781 | 3.636 | 1.976 | 5.867 |
| May | 2.843 | 3.838 | 2.723 | 3.419 | 2.31 | 2.934 |
| June | 2.77 | 3.659 | 2.395 | 3.095 | 2.037 | 2.485 |
| July | 2.699 | 3.472 | 2.155 | 2.566 | 1.732 | 2.111 |
| August | 2.18 | 3.173 | 1.72 | 2.14 | 1.385 | 1.829 |
| September | 2.064 | 2.77 | 1.677 | 2.23 | 1.385 | 1.829 |
| October | 1.801 | 2.905 | 1.929 | 2.375 | 1.36 | 1.875 |
| November | 2.09 | 2.719 | 1.879 | 2.786 | 0.914 | 2.502 |
| December | 2.606 | 3.329 | 2.006 | 3.435 | 0.551 | 3.561 |
| Annual | 2.647 | 3.539 | 2.304 | 3.042 | 1.296 | 3.336 |