Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 621 | 547 | 601 | 611 | 640 | 625 |
| Tmin | 623 | 557 | 610 | 615 | 643 | 627 |
| Durata del soleggiamento | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitazione | 133 | 111 | 132 | 142 | 154 | 153 |
| Umidità/Visibilità | 82 | 77 | 84 | 98 | 109 | 109 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 633 | 610 | 587 | 601 | 585 | 594 |
| Tmin | 642 | 620 | 594 | 616 | 598 | 605 |
| Durata del soleggiamento | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitazione | 153 | 161 | 153 | 149 | 120 | 144 |
| Umidità/Visibilità | 111 | 110 | 107 | 100 | 84 | 95 |
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. |
Aeroporto di Walvis Bay