Monthly Climate Summary for  May  2006  at Hampstead

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Very warm first half; very wet second half

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Overall mean temperature was

13.1

ºC

which is

+1.2

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

17.2

ºC

Mean night minimum (21-09) was

9.1

ºC

Mean 24hr maximum (09-09) was

17.2

ºC

which is

+0.9

degC

compared with the 1971-2000 average

Mean 24hr minimum (09-09) was

9.1

ºC

which is

+1.5

degC

compared with the 1971-2000 average

Highest day max was

26.3

ºC

on  the

4

Lowest day max was

13.1

ºC

on  the

21

Highest night min was

13.2

ºC

on  the

27

Lowest night min was

4.2

ºC

on  the

30

Lowest grass min was

0.8

ºC

on  the

2

Total rainfall this month was

78.3

mm

which is

132.7

per  cent

of the 1971-2000 average

Highest daily fall was

9.5

mm

on  the

24

Number of hours with rain was

83.0

hrs

Equiv. TSR rainfall duration was

58.1

hrs

which is

161.4

per  cent

of the 1971-2000 average

Highest no of wet hrs

11.0

hrs

on  the

24

Highest equiv duration

9.1

hrs

on  the

24

Mean rainfall intensity

1.35

mm/h

Total sunshine this month was

138.7

hrs

which is

77.1

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

152.6

hrs

which is

77.1

per  cent

of the 1971-2000 average

Highest daily sun was

11.7

hrs

on  the

11

Maximum  snow depth  was

0.0

cm

on the

Mean sea-level pressure at 09Z

1014.4

mbar

which is

-0.8

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

1026.2

mbar

on  the

31

Lowest  pressure at 09Z

988.4

mbar

on  the

22

Number of days with:

Air Frost

0

0.2mm rain

17

No  sun

0

Snow lying

0

Grnd Frost

0

1.0mm

15

3h  sun

19

Snow/sleet

0

Max < 0ºC

0

5mm

7

6h  sun

11

Hail

0

Max > 10

31

10mm

0

9h  sun

3

Thunder

0

Max > 20

5

25mm

0

12h sun

0

Fog at 09Z

1

Max > 30

0

15h sun

0

Gale

0

Notable events during the month: