Weather Data - May 2005

May 2005
Times indicate the end of a measurement period (BST)
Maximum Temperature 25.9 ēC 27-May-05    4:45 PM
Minimum Temperature 1.9 ēC 09-May-05    4:15 AM
Mean (15 min) 12.4 ēC 0.9 from average
Mean (Max Min) 12.9 ēC 1.4 from average  (calculated from 0901 to 0900 GMT data)
Mean Max 18.3 ēC 2.5 from average  (calculated from 0901 to 0900 GMT data)
Mean Min 7.6 ēC 0.6 from average  (calculated from 0901 to 0900 GMT data)
Lowest Max 10.1 ēC 14-May-05
Highest Min 13.1 ēC 28-May-05
Air Frosts 0 0 hours of Frost duration
Maximum Station Pressure 1026 hPa 30-May-05   10:15 PM
Minimum Station Pressure 1000 hPa 21-May-05    9:15 PM
Mean 1014.9 hPa
Mean of 09Z values 1015.1 hPa
Rainfall 61.2 mm 81.6% of average
Wettest 24hr 11.7 mm 20-May-05 12:45 PM
Wettest Calendar Day 11.4 mm 02-May-05 (calculated from 0901 to 0900 following day)
Rain Days ( > 0.3mm) 11 days (calculated from 0901 to 0900 GMT data)
Wet Days (>1.0mm) 9 days (calculated from 0901 to 0900 GMT data)
Wet Days (>5.0mm) 6 days (calculated from 0901 to 0900 GMT data)
Max 15min accum 2.1 mm 20-May-05    1:00 PM
Rain Duration 35 hours
Longest Dry period 10.26 days 13-May-05 12:30 PM 246.25 (hours)
Longest Wet period (>0.3mm / 15 mins) 3.00 hours 20-May-05 2:00 AM
Sunshine Hours (>30klux) 274.00 hours 139.8% of average
Max Sunshine 12.00 hours 07-May-05 (calculated from 0901 to 0900 following day)
Sunshine Hours (>50%) 215 hours 109.7% of average
Max Sunshine 12.75 hours 08-May-05 (calculated from 0901 to 0900 following day)
Brightest Calendar Day 45.6 klux 23-May-05 (calculated from 0901 to 0900 following day)
Sunless Days 2 days (calculated from 0901 to 0900 GMT data)
Maximum Brightness (klux) 140 klux 22-May-05   12:45 PM
Average Wind Speed 5.0 knots 5.8 mph
Maximum Wind Speed 19.71 knots 12-May-05    5:00 PM 22.7 mph
Days with wind from: (calculated from 0901 to 0900 GMT data)
Calm 3
N 0
NE 0
E 7
SE 5
S 1
SW 3
W 11
NW 1
Average RH (at 09Z) 64.4

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