Cambridge Weather Summary September 2023 Based on 30 days' worth of half-hourly data recorded with rooftop sensors at the Computer Laboratory, Cambridge, U.K. Temperature (degrees C) Average: 16.6 Minimum: 6.4 (23 September 06:30) Maximum: 32.2 (09 September 15:30) Relative Humidity (%) Average: 73.5 Minimum: 12 (04 September 16:00) Maximum: 100 (01 September 00:00) Dew Point (degrees C) Average: 11.3 Minimum: -4.6 (23 September 17:00) Maximum: 20.9 (06 September 19:00) Atmospheric Pressure (mbar) Average: 1014.7 Minimum: 992 (20 September 20:00) Maximum: 1031 (03 September 08:30) Half-hourly Instantaneous Wind Speed (knots) Average: 2.6 Minimum: 0.0 (01 September 00:00) Maximum: 24.0 (19 September 11:30) Half-hourly Maximum Wind Speed (knots) Average: 8.7 Minimum: 0 (01 September 01:30) Maximum: 40 (19 September 12:30) Prevalent Wind Direction S (26.7% of readings) Total Sunshine Hours 141.9 Total Rainfall mm 68.5