Monthly Climate Summary for August 2004 at Hampstead  
                        home daily
               Very wet with frequent heavy rain;  very warm and humid till the 20th   back forward
                       
Overall mean temperature was 18.8 ēC which is +1.6 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 23.3 ēC              
Mean night minimum (21-09) was 14.3 ēC              
Mean 24hr maximum (09-09) was 23.3 ēC which is +1.5 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 14.3 ēC which is +1.7 degC compared with the 1971-2000 average
  Highest day max was 30.8 ēC on  the   8          
  Lowest day max was 18.2 ēC on  the 29          
  Highest night min was 19.6 ēC on  the 9          
  Lowest night min was 9.5 ēC on  the 31          
  Lowest grass min was 7.4 ēC on  the 31          
                       
Total rainfall this month was 124.7 mm which is 201.2 per  cent of the 1971-2000 average  
  Highest daily fall was 21.8 mm on  the 9          
Number of hours with rain was 92.0 hrs              
Equiv. TSR rainfall duration was 64.4 hrs which is 222.1 per  cent of the 1971-2000 average  
  Highest no of wet hrs 15.0 hrs on  the 9          
  Highest equiv duration 12.5 hrs on  the 9          
  Equiv. rainfall intensity 1.94 mm/h              
                       
Total sunshine this month was 160.4 hrs which is 93.3 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 176.4 hrs which is 93.3 per  cent of the 1971-2000 average  
  Highest daily sun was 11.5 hrs on  the 7          
                       
Maximum  snow depth  was 0.0 cm              
                       
Mean sea-level pressure at 09Z 1012.1 mbar which is -4.2 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1022.7 mbar on  the 1          
  Lowest  pressure at 09Z 1000.0 mbar on  the 18          
                       
Number of days with:                    
Air Frost 0   0.2mm rain 20   No  sun 0   Snow lying 0  
Grnd Frost 0   1.0mm 15   3h  sun 26   Snow/sleet 0  
Max < 0ēC 0   5mm 9   6h  sun 8   Hail 0  
Max > 10 31   10mm 4   9h  sun 4   Thunder 5  
Max > 20 27   25mm 0   12h sun 0   Fog at 09Z 0  
Max > 30 1         15h sun 0   Gale 0  
                       
Notable events during the month: