Monthly Climate Summary for August 2006 at Hampstead

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A very cloudy month with frequent rain; persistently cool from the 9th

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Overall mean temperature was

17.0

ºC

which is

-0.2

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

21.3

ºC

Mean night minimum (21-09) was

12.8

ºC

Mean 24hr maximum (09-09) was

21.3

ºC

which is

-0.5

degC

compared with the 1971-2000 average

Mean 24hr minimum (09-09) was

12.8

ºC

which is

+0.2

degC

compared with the 1971-2000 average

Highest day max was

28.6

ºC

on  the

6

Lowest day max was

16.7

ºC

on  the

14

Highest night min was

18.3

ºC

on  the

7

Lowest night min was

9.3

ºC

on  the

25

Lowest grass min was

0.3

ºC

on  the

8

Total rainfall this month was

74.8

mm

which is

120.6

per  cent

of the 1971-2000 average

Highest daily fall was

20.0

mm

on  the

23

Number of hours with rain was

71.0

hrs

Equiv. TSR rainfall duration was

49.7

hrs

which is

146.2

per  cent

of the 1971-2000 average

Highest no of wet hrs

11.0

hrs

on  the

23

Highest equiv duration

9.1

hrs

on  the

23

Mean rainfall intensity

1.51

mm/h

Total sunshine this month was

128.0

hrs

which is

74.5

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

140.9

hrs

which is

74.5

per  cent

of the 1971-2000 average

Highest daily sun was

10.5

hrs

on  the

8

Maximum  snow depth  was

0.0

cm

on the

Mean sea-level pressure at 09Z

1013.8

mbar

which is

-2.5

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1025.0

mbar

on  the

8

Lowest  pressure at 09Z

1002.0

mbar

on  the

17

Number of days with:

Air Frost

0

0.2mm rain

19

No  sun

1

Snow lying

0

Grnd Frost

0

1.0mm

13

3h  sun

18

Snow/sleet

0

Max < 0ºC

0

5mm

3

6h  sun

7

Hail

0

Max > 10

31

10mm

2

9h  sun

2

Thunder

5

Max > 20

24

25mm

0

12h sun

0

Fog at 09Z

0

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: