| Average Precipitation mm (in) | 20.1 (0.79) | 15.2 (0.6) | 13.7 (0.5) | 17.3 (0.7) | 15.7 (0.6) | 28.4 (1.1) | 55.1 (2.2) | 68.8 (2.7) | 61.7 (2.4) | 34.3 (1.4) | 26.4 (1) | 21.1 (0.8) | | 377.8 (14.9) |
| Precipitation Litres/m² (Gallons/ft²) | 20.1 (0.49) | 15.2 (0.37) | 13.7 (0.34) | 17.3 (0.42) | 15.7 (0.39) | 28.4 (0.7) | 55.1 (1.35) | 68.8 (1.69) | 61.7 (1.51) | 34.3 (0.84) | 26.4 (0.65) | 21.1 (0.52) | | 377.8 (9.27) |
| Number of Wet Days (probability of rain on a day) | 11 (35%) | 11 (39%) | 11 (35%) | 10 (33%) | 9 (29%) | 8 (27%) | 13 (42%) | 17 (55%) | 14 (47%) | 12 (39%) | 11 (37%) | 11 (35%) | | 138 (38%) |
| Percentage of Sunny (Cloudy) Daylight Hours | 48 (52) | 44 (56) | 55 (45) | 49 (51) | 51 (49) | 47 (53) | 34 (66) | 29 (71) | 36 (64) | 36 (64) | 37 (63) | 38 (62) | | 43 (57) |