 | Average Precipitation mm (in) | 23.6 (0.93) | 22.6 (0.9) | 28.1 (1.1) | 38.2 (1.5) | 77.2 (3) | 72.7 (2.9) | 66.2 (2.6) | 69.6 (2.7) | 40.4 (1.6) | 30.5 (1.2) | 31.9 (1.3) | 25.3 (1) | | 526.3 (20.7) |
 | Precipitation Litres/m² (Gallons/ft²) | 23.6 (0.58) | 22.6 (0.55) | 28.1 (0.69) | 38.2 (0.94) | 77.2 (1.89) | 72.7 (1.78) | 66.2 (1.62) | 69.6 (1.71) | 40.4 (0.99) | 30.5 (0.75) | 31.9 (0.78) | 25.3 (0.62) | | 526.3 (12.91) |
 | Number of Wet Days (probability of rain on a day) | 13 (42%) | 12 (42%) | 12 (39%) | 13 (43%) | 13 (42%) | 13 (43%) | 13 (42%) | 13 (42%) | 10 (33%) | 13 (42%) | 12 (40%) | 13 (42%) | | 150 (41%) |
 | Percentage of Sunny (Cloudy) Daylight Hours | 21 (79) | 28 (72) | 43 (57) | 45 (55) | 51 (49) | 53 (47) | 55 (45) | 56 (44) | 50 (50) | 36 (64) | 20 (80) | 17 (83) | | 43 (57) |