Page updated June 1, 2018 11:13
Link to April 2018..Link to June 2018

Data on this website may be freely used for personal and/or academic purposes only -but please do acknowledge Swanston Weather Site as source
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Swanston Weather Station
May 2018 (Means and totals to date are at foot of table)
 
  0900 GMT readings
 Daily  Readings (See notes at foot of page)
Weather in previous 24h & hours of air frost (to 0900 on date)
Date
Date
Pressure
(mb)
Temp (°C)
Relative
Humidity (%)
Wind Speed
(mph)
Wind
Direction
SoilTemp @ 20cm
(°C)
SnowDepth(cm) or
Pentlands, Lammermuirs, Moorfoots snowline(ft)
1Maximum Temperature (°C)
2Minimum Temperature (°C)
3Rainfall
(mm)
4GrassMin Temp
(°C)
5Sunshine (Hours)

Solar
Rad'n High
(W/m2)
7ET
(mm)
6Max Wind
Speed (mph)
1
1002.0
10.0
67
11
WSW
9.0
12.9
2.8
1.7
– 2.1
7.20
802
3.0
44
 Prolonged sunshine 30th. Clear am 1st
1
2
994.2
6.9
88
12
WNW
9.0
11.3
6.3
1.1
5.0
5.16
1039
2.5
39
 Sunny periods am 1st, cloudy later. Rain am 2nd
2
3
1012.8
9.1
79
13
WSW
9.0
13.4
4.8
0.2
2.0
2.47
452
1.8
33
 Rain am 2nd, sunny intervals pm. Cloudy am 3rd
3
4
1017.0
13.4
80
6
WSW
9.0
17.2
8.3
0.0
6.5
3.38
930
2.5
25
 Sunny intervals 3rd. Cloudy overnight 3rd/4th. Milder
4
5
1021.5
14.3
78
8
SSW
9.5
19.5
10.3
0.0
7.6
11.75
1013
3.6
31
 Sunny intervals 4th. Clear overnight. Warmer
5
6
1022.4
16.9
71
3
NNE
11.0
22.8
8.5
0.0
3.5
12.07
1027
4.1
24
 Sunny periods 5th. Clear am 6th
6
7
1017.9
14.7
80
4
NE
12.0
22.9
10.4
0.0
6.5
12.47
882
4.3
19
 Prolonged sunshine 6th. Clear am 7th. Warm
7
8
1005.6
16.2
67
11
SSW
12.5
17.3
13.1
1.0
10.0
7.87
1130
3.2
28
 Prolonged sunshine 7th. Clear am 8th. Warm
8
9
1004.4
11.2
77
11
SW
11.0
11.8
7.0
0.4
2.6
1.82
506
1.9
35
 Rain mid-afternoon 8th. Clear am 9th
9
10
1008.5
10.4
71
12
W
11.0
14.1
6.3
0.0
1.8
14.40
1023
4.5
26
 Cloudy, light rain pm 9th. Clear skies am 10th
10
11
1011.3
10.6
69
13
SSE
10.5
14.0
3.5
2.4
– 1.4
0.56
406
2.8
36
 Unbroken sunshine 10th. Clear skies am 11th
11
12
1013.1
11.5
67
3
NNE
10.5
15.7
5.7
10.3
2.5
14.13
891
3..8
17
 Mainly cloudy 11th. Rain early 12th then clear skies
12
13
1012.7
10.7
91
3
NNW
12.0
17.9
7.9
0.0
5.1
8.02
1046
3.3
18
 Unbroken sunshine 12th. Moderate rain am 13th
13
14
1021.7
14.9
61
2
SE
12.0
18.7
5.8
0.0
1.1
14.74
1011
4.1
16
 Sunny periods 13th. Clear skies am 14th
14
15
1021.5
15.2
70
8
W
12.0
19.9
8.2
0.0
4.6
7.82
1134
3.0
19
 Unbroken sunshine 14th. Clear am 15th
15
16
1030.8
11.3
62
3
NE
11.5
14.6
6.0
0.0
2.2
15.33
830
4.1
16
 Sunny periods 15th. Clear skies am 16th
16
17
1030.4
10.2
65
5
SE
12.0
15.9
6.2
0.0
2.3
15.89
838
4.3
14
 Unbroken sunshine 16th. Clear skies am 17th
17
18
1024.8
13.5
64
3
NW
12.0
18.8
5.2
0.0
1.5
9.73
884
3.6
16
 Unbroken sunshine 17th. Hazy skies am 18th
18
19
1022.4
16.3
56
8
SW
13.0
21.3
8.8
0.2
3.5
11.37
914
5.3
39
 Sunny periods 18th. Hazy skies am 19th
19
20
1018.3
13.3
68
13
SSW
13.0
18.6
12.1
0.0
10.6
0.09
501
3.3
37
 Sunny periods 19th. Some light rain am 20th
20
21
1017.6
18.6
49
6
SW
13.0
21.7
11.2
0.0
5.1
8.94
854
4.1
18
 Cloudy 20th. Cloud clearing am 21st
21
22
1024.6
8.2
86
11
ESE
13.0
12.7
7.6
0.0
7.2
1.77
824
2.3
25
 Sunny periods 21st. Cloud from E overnight, cooler
22
23
1028.6
8.7
90
5
E
12.5
12.9
7.4
0.0
7.0
9.86
1009
2.8
15
 Mainly cloudy 22nd. Low cloud from E am 23rd
23
24
1027.2
10.2
85
4
ENE
13.0
15.1
6.1
0.0
2.3
10.70
860
3.6
14
 Sunny periods 23rd. Clear skies am 24th
24
25
1026.2
14.2
76
4
E
13.0
17.7
7.2
0.0
7.0
9.85
893
3.8
27
 Prolonged sunshine 24th. Fog overnight 24th/25th
25
26
1029.3
11.1
91
10
ESE
13.0
15.1
9.5
0.2
4.9
6.45
939
3.0
23
 Sunny periods 25th. Low cloud at times am 26th
26
27
1025.2
9.1
99
6
E
13.0
13.9
7.5
0.1
7.5
0.00
396
1.3
16
 Sunny periods 26th. Low cloud/fog late 26th/am 27th
27
28
1022.7
13.9
98
5
SE
13.5
21.9
8.6
0.1
8.6
12.25
911
4.3
14
 Haar 27th clearing am 28th
28
29
1024.8
10.2
99
3
NE
14.0
16.6
9.1
0.0
7.4
5.11
775
1.5
16
 Prolonged sunshine 28th. Haar late 28th/am 29th
29
30
1017.7
11.7
98
3
SE
13.5
17.6
9.6
0.2
8.4
1.60
962
1.5
18
 Haar clearing mid pm 29th. Haar am 30th
30
31
1015.9
13.0
99
1
SE
14.0
18.6
10.7
0.0
10.7
1.00
780
1.5
9
 Mainly cloudy 30th. Haar overnight 30th/31st
31
 
   
Total/
Mean
16.9
7.8
17.9
– 2.1
243.77
1134
98.8
44
  
Date
 
Pressure
(mb)
Temp
(°C)
Relative
Humidity
(%)
Wind
Speed (mph)
Wind
Direction
Soil Temp
at 20cm
(°C)
Snow Depth(cm)
or
Pentlands Snow line(ft)
1 Mean Maximum
Temperature
(°C)
2Mean Minimum
Temperature
(°C)
3Total Rainfall
(mm)
4GrassMin
Temperature
lowest
(°C)
5Total Sunshine
(Hours)
Solar
Rad'n highest
( W/m2)
7Total ET
(mm)
6Maximum
Wind Speed
(mph)
 
  0900 GMTreadings
Daily Readings (see notes below)  
    

 

Notes
1. For the 24 hours from 0900UTC* on the date to 0900UTC* on the following day. (The maximum temperature is generally in the afternoon*)
2. For the 24 hours ending at 0900UTC* on the date. (The minimum temperature is generally just after sunrise*)
*Where a maximum is overnight or minimum is during the day the figure is shown in italics. This often occurs in winter
3. For the 24 hours from 0900UTC* on the date to 0900UTC* on following day. SEPA = Scottish Environmental Protection Agency/UKMO 5" diameter gauge
4. For the period from sunset on previous day to 0900UTC* on the date
5.For the period sunrise to sunset on the date
6. For the period 0000UTC*-2400UTC* on the date i.e the Calendar Day
7. Total evapotranspiration on the date (in mm).
* UTC is Universal Time Coordinated. It has been adopted by the UK Met.Office in place of Greenwich Mean Time (GMT). When British Summer Time is in force UTC is BST minus one hour ,e.g.1000BST=0900UTC

 

 

 

 

 


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