June 2008

Lynton Sea Fog
Looking down on sea fog near Lynton on the north Devon Coast on a hot, humid day in early June.
Summary for  June 2008
Mean Max: 20.4C (+1.3C)
Mean Min: 10.1C (-0.2C)
Mean: 15.3C (+0.6C)
     
High Max: 27.4C 9th
Low Max: 16.6C 21st
High Min: 15.7C 28th
Low Min: 5.1C 17th
Mean Grass Min: 8.3C  
Grass Min: 2.6C 16th
     
Rain Total (gauge): 30.9 mm (75%)
Rain Total (tipping bucket): 29.8 mm (72%)
Rain Days >0.2 mm: 10 Days  
Rain Days >1.0 mm: 9 Days  
Max 24 hrs: 8.0 mm 8th
Days without any rain: 18  
     
Air Frost: 0 Days  
Ground Frost: 0 Days  
Snow Falling: 0 Days  
Snow (50%) @ 9am: 0 Days  
Thunder Heard: 1 Days  7th
Hail <5 mm: 0 Days  
Hail >5 mm: 0 Days  
Fog @ 9am: 0 Days  
     
Total Monthly Sunshine: 232h:55m  
Total Monthly Sunshine: 232.9 Hours  
Most Sunshine in a Day: 14h:12m 30th
Average Daily Sunshine: 07h:45m  
Sunless Days: 0 Days  
Cloudless Days: 3 Days  
Total Possible Sunshine: 492h:43m  
Percentage of Total Sun: 47%  
     
Mean Soil Temp @ 30 cm: 15.8C  
Min Soil Temp @ 30 cm: 14.2C 18th
Max Soil Temp @ 30 cm: 18.1C 10th
Mean Soil Temp @ 100 cm: 13.9C  
Min Soil Temp @ 100 cm: 13.3C 1st
Max Soil Temp @ 100 cm: 14.6C 13th
     
Mean 10 Min Wind >39 mph: 0.0 Days  
N: 1.30 Days  
NE: 0.57 Days  
E: 0.71 Days  
SE: 2.74 Days  
S: 4.94 Days  
SW: 3.66 Days  
W: 7.27 Days  
NW: 6.81 Days  
Calm: 5.24 Days  
Mean Wind: 4 mph  
Max Gust: 28 mph 22nd
     
Mean Cloud Cover: 56%  
Mean RH @ 9am: 80%  
Rain Duration >0.1mm/hour: 23.8 Hours  
Frost Duration: 0.0 Hours  
Max Frost Duration in a Day: 0.0 Hours  
     
Mean Sea Temperature: 15.1C  
Normal for Month:    
Max Sea Temperature: 16.3C 24th
Min Sea Temperature: 13.5C 3rd
     
Mean Pressure @ 9am: 1017.1 hPa (-0.3 hPa)
Mean Pressure: 1017.0 hPa (-0.4 hPa)
Max Pressure: 1026.2 hPa 9th
Min Pressure: 1003.9 hPa 19th
     
Max Dewpoint: 15.8C 9th
Min Dewpoint: 1.6C 17th
Mean Dewpoint: 8.9C  
     
Max Humidity: 93% 22nd
Min Humidity: 40% 8th
Mean Humidity: 71% (-5)

 

A generally dry, sunny and reasonably warm month.

Very warm during the 2nd week but otherwise temperatures slightly above the LTA but with a few cool nights mid-month.  Interesting to note that the night of the 28th had a minimum temperature of 15.7C, this was warmer than any night minimum for the whole of 2007 and the highest night minimum since the 13th of September 2006 thus showing the lack of any really warm nights during 2007.  All months so far this year have had a mean temperature above the LTA.

Rainfall was well below average with a dry spell from the 6th to the 20th. Most of the rainfall for the month fell during the first week of the month.
As usual in a summer month there were no air or grass frosts.
Sunshine levels were slightly above average for June with the 2nd week being very sunny. No dull days but only 3 cloud-free days.
Soil temperatures remained around normal throughout.
This month saw a 'Return of the Westerlies' (after nearly 2 months dominated by winds from the east) with westerly and north-westerly being the dominant wind directions.
.
Sea temperatures rose gradually throughout the month and on the whole were around average or slightly above.
Mean pressure was was -0.4 hPa below normal and indicative of the generally unsettled nature of this month.
Dewpoints were generally quite low until the end of the month.
With a mean relative humidity of 71%, this was 5 percentage points below normal.
Weather Data for Otter Valley, Devon.  June 2008  
  Temp (oC) Hum (RH%) Dewpoint (oC) Wind (mph) Rain Pressure (hPa) Grass Sun  
  Min Max Ave Min Max Ave Min Max Ave Max Ave Run mm Min Max Ave Min Hours Observations
1 11.8 20.5 16.2 68 89 79 8.9 14.2 11.6 11 1.5 35 0.0 1013 1017 1015 11.1 2.3 Sunny ints am, cloudy pm
2 9.6 19.7 14.7 69 90 80 7.0 13.7 10.4 9 1.3 31 2.0 1011 1014 1012 9.3 2.8 Sunny am, cloudy pm
3 12.4 18.2 15.3 57 90 74 7.9 12.6 10.3 21 7.2 172 8.0 1011 1017 1014 12.2 4.4 Hazy sunshine all day
4 6.1 19.4 12.8 53 90 72 3.1 10.8 7.0 19 3.8 90 0.2 1016 1018 1017 5.1 6.5 Sunny intervals all day
5 11.2 18.7 15.0 61 91 76 6.9 11.4 9.2 25 6.3 152 4.4 1015 1018 1016 11.1 8.7 Sunny intervals all day
6 7.7 20.1 13.9 50 89 70 4.7 9.9 7.3 19 4.9 119 0.0 1018 1020 1019 5.2 11.7 Sunny ints am, sunny pm
7 6.2 19.4 12.8 48 90 69 2.7 10.5 6.6 14 2.9 69 0.2 1020 1021 1021 4.5 8.6 Sunny ints, thunder pm
8 7.8 25.1 16.5 40 90 65 4.5 12.2 8.4 15 3.1 76 0.0 1021 1025 1023 6.6 13.8 Sunny all day
9 10.2 27.4 18.8 47 89 68 6.8 15.8 11.3 12 1.8 44 0.0 1025 1026 1025 8.2 12.1 Sunny am, sunny ints pm
10 10.8 26.6 18.7 46 89 68 7.6 15.7 11.7 16 2.9 71 0.0 1023 1026 1024 9.2 13.9 Sunny all day
11 10.9 22.5 16.7 53 82 68 6.6 12.4 9.5 18 4.8 116 0.0 1022 1026 1024 8.4 10.0 Sunny intervals all day
12 12.1 19.1 15.6 47 87 67 6.4 11.8 9.1 20 5.9 141 1.4 1018 1022 1020 9.8 11.5 Sunny intervals all day
13 8.7 19.6 14.2 42 85 64 4.9 7.8 6.4 18 3.7 88 0.0 1017 1020 1019 6.2 8.8 Sunny intervals all day
14 8.8 19.7 14.3 48 86 67 4.8 9.8 7.3 16 2.7 64 0.0 1015 1019 1017 6.2 8.1 Sunny intervals all day
15 5.9 18.5 12.2 55 88 72 2.4 9.0 5.7 17 1.7 41 0.0 1010 1015 1013 4.2 6.9 Sunny intervals all day
16 5.7 20.3 13.0 49 84 67 1.9 9.0 5.5 13 2.2 52 0.0 1010 1012 1011 2.6 8.5 Sunny intervals all day
17 5.1 18.6 11.9 51 88 70 1.6 8.6 5.1 20 2.6 61 0.0 1012 1013 1012 2.7 7.7 Sunny intervals all day
18 12.7 16.9 14.8 68 86 77 7.7 11.0 9.4 26 5.5 132 1.4 1007 1013 1010 7.8 0.8 Sunny ints am, rain late pm
19 12.1 20.8 16.5 43 90 67 7.2 12.3 9.8 26 7.4 177 0.6 1004 1015 1010 10.2 12.7 Sunny intervals all day
20 10.3 17.1 13.7 63 87 75 6.0 11.5 8.8 11 2.3 55 3.6 1015 1019 1017 7.5 1.4 Sunny intervals am, rain pm
21 12.2 16.6 14.4 86 92 89 9.2 13.9 11.6 20 5.1 123 1.8 1012 1018 1015 12.7 0.5 Brief sunny int am, rain pm
22 14.3 19.1 16.7 49 93 71 6.8 14.3 10.6 28 8.4 201 4.2 1008 1016 1012 13.1 10.0 Sunny intervals all day
23 9.6 20.6 15.1 50 89 70 5.9 10.9 8.4 14 2.7 65 0.0 1016 1021 1018 9.3 6.4 Sunny intervals all day
24 7.4 21.3 14.4 45 90 68 3.9 10.9 7.4 13 2.8 67 0.0 1014 1020 1017 6.7 9.9 Sunny intervals all day
25 13.7 21.2 17.5 49 88 69 7.7 11.7 9.7 22 6.0 143 0.0 1013 1019 1016 11.4 9.2 Sunny intervals all day
26 8.9 21.1 15.0 55 89 72 5.7 11.1 8.4 24 4.5 109 0.0 1017 1021 1019 5.8 7.4 Sunny intervals all day
27 14.8 20.8 17.8 71 90 81 10.6 14.2 12.4 24 5.1 123 2.0 1017 1020 1018 13.8 1.1 Brief sunny ints all day
28 15.7 21.9 18.8 49 87 68 9.0 13.6 11.3 21 5.6 136 0.0 1018 1020 1019 14.2 7.1 Sunny intervals all day
29 12.3 21.0 16.7 51 86 69 7.9 11.6 9.8 23 4.1 98 0.0 1018 1019 1019 10.6 6.2 Sunny intervals all day
30 8.1 21.1 14.6 52 90 71 4.0 11.4 7.7 20 3.8 90 0.0 1019 1022 1020 4.5 14.2 Sunny all day
10.1 20.4 15.3 54 88 71 6.0 11.8 8.9 19 4.1 2937 29.8 1015 1019 1017 8.3 232.9  
 
Graphs for June 2008
Figure 1. Temperature and Rainfall for June 2008.
Figure 2. Sunshine, air pressure and mean wind speed for June 2008.
Figure 3. Wind direction for June 2008.
Figure 4. Soil & sea surface temperature (SST) for Lyme Bay for June 2008.
Figure 5. Wind run, maximum gusts and mean pressure for June 2008.