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  Home - Climate - 30 Year Averages - Shannon Airport

 

30 Year Averages


Please choose a 30 year average report from any station by clicking on the map or one of the links below:

SHANNON AIRPORT

monthly and annual mean and extreme values

1961-1990

TEMPERATURE (degrees Celsius)

jan

feb

mar

apr

may

jun

jul

aug

sep

oct

nov

dec

year

mean daily max.

8.2

8.5

10.5

12.7

15.3

17.9

19.4

19.2

17.2

14.2

10.4

8.9

13.5

mean daily min.

2.6

2.7

3.6

4.8

7.3

10.1

12.0

11.7

10.1

8.0

4.5

3.6

6.8

mean

5.4

5.6

7.0

8.8

11.3

14.0

15.7

15.5

13.6

11.1

7.5

6.3

10.1

absolute max.

14.0

14.8

20.2

22.2

25.6

31.6

30.6

28.7

25.5

21.8

18.2

15.2

31.6

absolute min.

-11.2

-9.8

-7.8

-4.1

-0.9

1.5

5.2

2.9

1.3

-1.4

-6.1

-8.3

-11.2

mean no. of days with air frost

6.5

5.4

3.2

1.6

0.0

0.0

0.0

0.0

0.0

0.3

3.5

5.0

25.4

mean no. of days with ground frost

13.2

11.0

9.5

8.2

2.5

0.4

0.0

0.0

0.6

2.7

9.6

11.0

68.6

RELATIVE HUMIDITY (%)

mean at 0900UTC

88

87

85

81

77

79

81

83

85

88

88

89

84

mean at 1500UTC

82

75

70

65

64

67

68

69

71

77

81

84

73

SUNSHINE (hours)

mean daily duration

1.58

2.34

3.34

4.93

5.77

5.13

4.59

4.44

3.69

2.65

1.93

1.42

3.48

greatest daily duration

7.8

9.5

11.6

13.6

15.3

15.8

15.7

14.8

11.6

9.9

8.8

7.1

15.8

mean no. of days with no sun

10

7

5

3

2

2

2

2

3

6

8

11

62

RAINFALL (mm)

mean monthly total

97.8

71.5

71.4

55.7

59.5

62.8

56.8

82.4

81.6

93.4

94.8

99

926.7

greatest daily total

29.0

33.5

28.5

29.6

27.0

29.7

42.5

35.9

35.5

33.0

33.0

50.4

50.4

mean no. of days with >= 0.2mm

20

16

19

16

17

16

15

18

18

20

19

20

214

mean no. of days with >= 1.0mm

16

12

14

11

13

11

10

13

13

15

15

16

160

mean no. of days with >= 5.0mm

7

5

5

4

4

4

4

5

6

6

7

7

66

WIND (knots)

mean monthly speed

10.9

11.1

11.0

9.5

9.5

8.9

8.7

8.6

9.6

10.0

9.6

10.5

9.8

max. gust

82

80

65

62

61

57

52

55

93

84

64

81

93

max. mean 10-minute speed

55

53

44

41

39

42

33

39

60

57

45

51

60

mean no. of days with gales

2.1

1.2

1.4

0.5

0.5

0.1

0.0

0.1

0.6

0.9

1.0

1.5

9.8

WEATHER (mean no. of days with...)

snow or sleet

3.4

3.2

1.8

0.6

0.1

0.0

0.0

0.0

0.0

0.1

0.3

1.5

10.9

snow lying at 0900UTC

0.8

0.7

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.3

2.0

hail

3.7

3.1

4.3

2.5

1.7

0.2

0.1

0.2

0.3

1.1

1.8

2.7

21.7

thunder

0.9

0.5

0.4

0.3

0.4

0.8

0.8

0.5

0.4

0.4

0.4

0.4

6.3

fog

4.1

2.0

1.8

2.2

1.7

1.8

1.7

3.1

3.0

3.3

3.4

3.6

31.8

 

 
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