June 2008

Temperatures
(all temperatures in degrees Celsius; all averages 1961 – 1990)

Mean daily maximum: 17.8
Difference from average: +0.3

Mean daily minimum: 9.0
Difference from average: +0.4

Mean air temperature: 13.4
Difference from average: +0.4

Absolute maximum: 24.2 (8th)

Absolute minimum: 4.8 (21st)

Mean grass minimum: 9.1

Absolute grass minimum: 1.4 (23rd)

Number of ground frosts: 0

Number of air frosts: 0

Mean soil temperature at 30cm depth: 15.8

Mean soil temperature at 100cm depth: 14.5

Rainfall
(all totals in millimetres; all averages 1961 – 1990)

NB: gauge faulty – estimate from Met Office website

Total for the month: 68.2
Difference from average: +16.4

Percentage of the average: 132%

Wettest day: 13.4 (21st)

Number of rain days (>0.25mm): 14

Number of wet days (=> 1mm): 12

3-month total rainfall to 30th June: 189.2
Difference from average: +38.1

6-month rainfall total to 30th June: 327.6
Difference from average: +24.8

12-month rainfall total to 30th June:
Difference from average: -16.2

Humidity
(Averages for 09:00 hours GMT)

Relative Humidity: 71%

Sunshine
(all averages 1961 – 1990)

NB: gauge faulty – estimate from Met Office website

Total for the month: 185 hours
Difference from average: +21.3

Percentage of the average: 113%

Mean daily sunshine: 6.2 hours
Difference from average: +0.7

Cumulative total sunshine since 1st January: 726.6 hours
Difference from average: +36.5

Wind

The mean wind speed: 9.8km/h [5.3kt]
Difference from average: -1.8km/hr

The highest gust: 82.8km/h [44.7kt] from 188° at 14:10 GMT on 22nd

ISSN1350-483

Comments on June 2008
A new automatic weather station was installed in 3rd June. This has meant a new system to master and a new format for data received over the internet, hence the delay in getting this report out, for which our apologies. Not that the sunshine recorder was not functional for part of the month.

Temperatures in June were slightly above average. The highest maximum was 24.2°C on the 8th and maxima did not exceed 20°C after the 9th, a somewhat disappointing state of affairs. Rainfall was above average, although not exceptionally so. Long-term totals are now at or above average. It was a relatively calm month, with mean wind speeds well below average. Judging from the Met Office website, sunshine was a little above average.

Professor Tim Burt
Department of Geography
Durham University