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Example climate estimate

Llanfairpwlligwyngll
Climate estimates (1961 90)

National Grid Reference: 2530E 3710N
Lat: 53 deg 12 min 55 sec N
Long: 4 deg 12 min 6 sec W
Altitude: 15 metres above mean sea level

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Max temp °C 7.7 8.0 9.7 12.1 15.2 17.9 19.4 19.3 17.4 14.6 10.5 8.7 13.4
Min temp °C 2.6 2.2 3. 4 4.9 7.4 10.1 11.9 11.9 10.4 8.3 5.0 3.5 6.8
Mean temp °C 5.2 5.1 6.6 8.5 11.3 14.0 15.7 15.6 13.9 11.5 7.8 6.1 10.1
Temp range °C 5.1 5.7 6.3 7.2 7.8 7.8 7.5 7.4 6.9 6.3 5.4 5.2 6.6
Highest max °C 16 17 22 24 28 29 31 34 27 25 18 17 34
Lowest min °C -9 -8 -7 -3 -1 2 5 4 1 -1 -4 -8 -9
Lowest max °C -3 -1 1 4 7 10 12 13 10 7 2 -1 -3
Highest min °C 12 11 12 12 16 18 20 20 17 18 13 12 20
Grass min °C -0.6 1.2 -0.2 0.9 3.5 6.8 8.9 8.9 7.0 4.8 1.5 0.1 3.4
30 cm soil temp °C 4.9 4.8 6.1 8.8 12.1 15.1 16.8 16.7 15.0 12.1 8.5 6.1 10.6
Sunshine hr/day 1.6 2.6 3.4 5.1 6.3 6.1 5.6 5.3 4.2 3.0 1.9 1.3 3.87
Rainfall mm 107 72 85 65 65 68 74 95 98 120 130 123 1102
Wind at 10 m knots 11.6 10.5 11.1 9.5 9.3 9.0 8.8 8.9 9.9 10.4 10.8 11.2 10.1
Min hourly RH % 79 76 73 69 67 68 70 71 73 75 78 80 73
Max hourly RH % 88 88 88 88 89 91 91 92 91 90 89 89 89
Air frost days 5.8 5.9 2.2 0.9 0.0 0.0 0.0 0.0 0.0 0.1 1.8 4 4 21
Grass frost days 17.1 16.9 15.3 12.5 6.0 1.2 0.2 0.1 1.3 4.7 12.2 15.9 104
>=10 mm rain days 2.5 1.7 2.0 1.5 1.2 1.6 2.2 2.7 2.8 3.4 3.8 3.5 29
>=1 mm rain days 15.6 11.2 13.0 10.4 10.9 10.3 9.5 11.7 12.3 15.0 15.7 15.1 151
>=0.2 mm rain days 19.7 15.0 17.4 14.1 14.9 13.7 13.1 15.1 15.8 18.7 19.5 19.5 197
Snow falling days 2.9 3.1 1. 7 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.4 1.6 10
Sleet/snow fall days 4.6 4.5 3.4 1.5 0.2 0.0 0.0 0.0 0.0 0.0 1.0 2.9 18
Snow lying days 1.0 0.7 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.5 2.8
Hail days 1.7 1.2 1.6 1.1 0.8 0.2 0.0 0.1 0.2 1.0 1.8 1.4 11
Thunder heard days 0.2 0.2 0.3 0.4 1.4 1.3 1.2 1.2 0.7 0.6 0.4 0.3 8.3

Notes

These estimates of 30-year averages are interpolated from values on a regular grid derived from station observations. Where relevant and possible the effects of altitude, urban areas and proximity to the coast are taken into account.

Local effects are not taken into account in producing these estimates. As a general rule this makes them less accurate in mountainous areas. In particular, days of thunder, hail, snow falling and snow lying may be unreliable in data-sparse areas such as central and northern Scotland.

Estimates are available for 1961 1990 for all the climate variables shown in the example.

Estimates are also available for 1971 2000 for most of the climate variables. However, Highest max °C, Lowest min °C, Lowest max °C, Highest min °C, Min hourly RH %, Max hourly RH % will not be included.



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