Monthly Climate Summary for  May  2008  at Hampstead  
                        home daily
                     Exceptionally warm and sunny first fortnight; very wet 24th-29th   back forward
                       
Overall mean temperature was 14.2 ēC which is +2.3 degC compared with the 1971-2000 average
Mean day maximum (09-21) was 18.8 ēC              
Mean night minimum (21-09) was 9.6 ēC              
Mean 24hr maximum (09-09) was 18.9 ēC which is +2.6 degC compared with the 1971-2000 average
Mean 24hr minimum (09-09) was 9.6 ēC which is +2.0 degC compared with the 1971-2000 average
  Highest day max was 25.5 ēC on  the   11          
  Lowest day max was 11.2 ēC on  the 26          
  Highest night min was 14.3 ēC on  the 10          
  Lowest night min was 3.4 ēC on  the 20          
  Lowest grass min was -0.4 ēC on  the 20          
                       
Total rainfall this month was 87.3 mm which is 148.0 per  cent of the 1971-2000 average  
  Highest daily fall was 23.5 mm on  the 26          
Number of hours with rain was 56.0 hrs              
Equiv. TSR rainfall duration was 39.2 hrs which is 108.9 per  cent of the 1971-2000 average  
  Highest no of wet hrs 16.0 hrs on  the 26          
  Highest equiv duration 13.3 hrs on  the 26          
Mean rainfall intensity 2.23 mm/h              
                       
Total sunshine this month was 175.0 hrs which is 97.2 per  cent of the 1971-2000 average  
Equiv. C/S sunshine total was 192.5 hrs which is 97.2 per  cent of the 1971-2000 average  
  Highest daily sun was 11.7 hrs on  the 6          
                       
Maximum  snow depth  was 0.0 cm on the            
                       
Mean sea-level pressure at 09Z 1016.3 mbar which is +1.1 mbar compared with the 1961-1990 average
  Highest pressure at 09Z 1026.7 mbar on  the 5          
  Lowest  pressure at 09Z 1003.2 mbar on  the 28          
                       
Number of days with:                    
Air Frost 0   0.2mm rain 11   No  sun 4   Snow lying 0  
Grnd Frost 1   1.0mm 8   3h  sun 23   Snow/sleet 0  
Max < 0ēC 0   5mm 4   6h  sun 13   Hail 0  
Max > 10 31   10mm 4   9h  sun 8   Thunder 1  
Max > 20 16   25mm 0   12h sun 0   Fog at 09Z 0  
Max > 30 0         15h sun 0   Gale 0  
                       
Notable events during the month: