Number of days available for climatic review
| Parameter | Jan | Feb | Mär | Apr | Mai | Jun |
| Tmax | 35 | 50 | 52 | 54 | 59 | 65 |
| Tmin | 40 | 38 | 48 | 49 | 59 | 63 |
| Sonnenscheindauer | 0 | 0 | 0 | 0 | 0 | 0 |
| Niederschlag | 68 | 63 | 70 | 72 | 78 | 97 |
| Feuchte/Sicht | 39 | 49 | 56 | 52 | 66 | 77 |
| Parameter | Jul | Aug | Sep | Okt | Nov | Dez |
| Tmax | 74 | 60 | 75 | 77 | 78 | 58 |
| Tmin | 81 | 69 | 78 | 84 | 77 | 62 |
| Sonnenscheindauer | 0 | 0 | 0 | 0 | 0 | 0 |
| Niederschlag | 98 | 96 | 94 | 95 | 95 | 100 |
| Feuchte/Sicht | 78 | 67 | 78 | 79 | 80 | 65 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |
Aitutaki