Monthly Climate Summary for September 1999 at Milhaguet (Carreau)

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Dry, sunny and hot until the 12th, then cool and cloudy with heavy rain at times

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Overall mean temperature was

16.9

ºC

which is

+0.7

degC

compared with the 1971-2000 average

Mean day maximum (09-21) was

22.1

ºC

which is

-1.1

degC

compared with the 1971-2000 average

Mean night minimum (21-09) was

11.7

ºC

which is

+2.5

degC

compared with the 1971-2000 average

Mean 24hr maximum (09-09) was

22.1

ºC

Mean 24hr minimum (09-09) was

11.7

ºC

Highest day max was

29.7

ºC

on  the

11

Lowest day max was

13.5

ºC

on  the

20

Highest night min was

15.1

ºC

on  the

2

Lowest night min was

5.7

ºC

on  the

16

Lowest grass min was

5.5

ºC

on  the

16

Total rainfall this month was

97.9

mm

which is

107.6%

per  cent

of the 1971-2000 average

Highest daily fall was

19.1

mm

on  the

13

Number of hours with rain was

0.0

hrs

Equiv. TSR rainfall duration was

0.0

hrs

which is

per  cent

of the 1971-2000 average

Highest no of wet hrs

0.0

hrs

on  the

Highest equiv duration

0.0

hrs

on  the

Total sunshine this month was

138.5

hrs

which is

76.1%

per  cent

of the 1971-2000 average

Equiv. C/S sunshine total was

152.4

hrs

which is

76.1%

per  cent

of the 1971-2000 average

Highest daily sun was

9.7

hrs

on  the

1

Maximum  snow depth  was

0.0

cm

on  the

Mean sea-level pressure at 09Z

mbar

which is

mbar

compared with the 1961-1990 average

Highest pressure at 09Z

mbar

on  the

Lowest  pressure at 09Z

mbar

on  the

Number of days with:

Air Frost

0

0.2mm rain

17

No  sun

0

Snow lying

0

Grnd Frost

0

1.0mm

11

3h  sun

19

Snow/sleet

0

Max < 0ºC

0

5mm

8

6h  sun

10

Hail

0

Max > 10

30

10mm

3

9h  sun

2

Thunder

0

Max > 20

18

25mm

0

12h sun

0

Fog at 09Z

0

Max > 30

0

50mm

0

15h sun

0

Gale

0

Notable events during the month: