Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 760 | 687 | 794 | 773 | 804 | 777 |
| Tmin | 762 | 693 | 791 | 762 | 789 | 763 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 754 | 672 | 777 | 752 | 776 | 751 |
| Humidity/Visibility | 91 | 84 | 113 | 113 | 116 | 114 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 778 | 799 | 793 | 796 | 770 | 776 |
| Tmin | 773 | 784 | 774 | 789 | 746 | 766 |
| Duration of sunshine | 0 | 2 | 2 | 0 | 0 | 0 |
| Precipitation | 759 | 781 | 771 | 775 | 756 | 785 |
| Humidity/Visibility | 105 | 109 | 116 | 113 | 103 | 103 |
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. |
Antigua