Monthly Climate Summary for August 2010 at Hampstead  
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                       A rather cool, very cloudy month with frequent rain   back forward
                       
Overall mean temperature was 16.3 ēC which is -0.9 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 20.3 ēC              
Mean night minimum (21-09) was 12.3 ēC              
Mean 24hr maximum (09-09) was 20.4 ēC which is -1.4 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 12.3 ēC which is -0.3 degC compared with the 1971-2000 average
  Highest day max was 24.1 ēC on  the   9          
  Lowest day max was 16.7 ēC on  the 27          
  Highest night min was 18.0 ēC on  the 21          
  Lowest night min was 8.1 ēC on  the 30          
  Lowest grass min was 2.5 ēC on  the 31          
                       
Total rainfall this month was 121.9 mm which is 196.6 per  cent of the 1971-2000 average  
  Highest daily fall was 28.4 mm on  the 22          
Number of hours with rain was 73.0 hrs              
Equiv. TSR rainfall duration was 51.1 hrs which is 150.3 per  cent of the 1971-2000 average  
  Highest no of wet hrs 20.0 hrs on  the 26          
  Highest equiv duration 16.6 hrs on  the 26          
Mean rainfall intensity 2.39 mm/h              
                       
Total sunshine this month was 111.4 hrs which is 64.8 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 122.5 hrs which is 64.8 per  cent of the 1971-2000 average  
  Highest daily sun was 8.5 hrs on  the 31          
                       
Maximum  snow depth  was 0.0 cm on the            
                       
Mean sea-level pressure at 09Z 1015.7 mbar which is -0.6 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1028.3 mbar on  the 31          
  Lowest  pressure at 09Z 999.8 mbar on  the 23          
                       
Number of days with:                    
Air Frost 0   0.2mm rain 21   No  sun 0   Snow lying 0  
Grnd Frost 0   1.0mm 14   3h  sun 15   Snow/sleet 0  
Max < 0ēC 0   5mm 9   6h  sun 7   Hail 0  
Max > 10 31   10mm 3   9h  sun 0   Thunder 0  
Max > 20 14   25mm 1   12h sun 0   Fog at 09Z 0  
Max > 30 0         15h sun 0   Gale 0  
                       
Notable events during the month: