Number of days available for climatic review
| Parameter | Jan | Feb | Mär | Apr | Mai | Jun |
| Tmax | 156 | 142 | 166 | 160 | 166 | 157 |
| Tmin | 151 | 136 | 131 | 113 | 128 | 116 |
| Sonnenscheindauer | 0 | 0 | 0 | 0 | 0 | 0 |
| Niederschlag | 197 | 173 | 189 | 184 | 194 | 182 |
| Feuchte/Sicht | 95 | 79 | 89 | 87 | 95 | 89 |
| Parameter | Jul | Aug | Sep | Okt | Nov | Dez |
| Tmax | 163 | 170 | 190 | 199 | 187 | 162 |
| Tmin | 120 | 125 | 153 | 146 | 130 | 137 |
| Sonnenscheindauer | 0 | 0 | 0 | 0 | 0 | 0 |
| Niederschlag | 191 | 192 | 212 | 213 | 213 | 203 |
| Feuchte/Sicht | 94 | 98 | 111 | 106 | 104 | 93 |
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. |
Alofi