| Average Precipitation mm (in) | 39 (1.54) | 33 (1.3) | 30 (1.2) | 39 (1.5) | 60 (2.4) | 77 (3) | 77 (3) | 80 (3.1) | 58 (2.3) | 42 (1.7) | 41 (1.6) | 31 (1.2) | | 607 (23.9) |
| Precipitation Litres/m² (Gallons/ft²) | 39 (0.96) | 33 (0.81) | 30 (0.74) | 39 (0.96) | 60 (1.47) | 77 (1.89) | 77 (1.89) | 80 (1.96) | 58 (1.42) | 42 (1.03) | 41 (1.01) | 31 (0.76) | | 607 (14.89) |
| Number of Wet Days (probability of rain on a day) | 15 (48%) | 13 (46%) | 12 (39%) | 13 (43%) | 13 (42%) | 14 (47%) | 14 (45%) | 13 (42%) | 12 (40%) | 12 (39%) | 13 (43%) | 14 (45%) | | 158 (43%) |
| Percentage of Sunny (Cloudy) Daylight Hours | 19 (81) | 25 (75) | 44 (56) | 41 (59) | 46 (54) | 45 (55) | 48 (52) | 50 (50) | 43 (57) | 34 (66) | 18 (82) | 15 (85) | | 39 (61) |