Page updated May 27, 2017 11:08
Link to April 2017 ..Link to June 2017

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 2017(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
1009.8
10.2
85
8
E
9.0
-
13.4
7.1
0.0
4.8
7.97
881
2.8
24
Sunny intervals 30th April. Haar am 1st, clearing
1
2
1024.5
7.9
92
5
E
10.0
-
9.9
6.9
0.0
6.9
1.29
410
1.0
16
Sunny periods 1st, haar evening. Haar am 2nd
2
3
1033.0
8.5
85
7
ENE
10.0
-
14.4
5.8
0.0
4.2
10.08
814
3.6
21
Haar 2nd, lifting evening. Clear am 3rd
3
4
1033.0
7.4
88
8
ESE
10.0
-
12.8
6.2
0.0
6.1
7.42
1005
2.6
24
Sunny periods 3rd. Haar overnight 3rd/4th
4
5
1030.8
11.4
58
16
ENE
10.0
-
13.3
4.6
0.0
0.5
15.24
807
3.8
28
Sunny periods 4th. Clear skies am 5th
5
6
1021.4
9.8
66
11
E
10.0
-
14.4
5.9
0.0
4.6
14.59
895
3.8
26
Unbroken sunshine 5th. Clear skies am 6th
6
7
1023.7
11.2
79
6
E
10.5
-
13.5
7.4
0.0
5.4
8.62
979
3.0
19
Unbroken sunshine 5th. Clear then cloudy 7th
7
8
1032.5
7.7
73
10
E
11.0
-
11.9
5.7
0.0
1.4
10.42
954
3.8
25
Sunny periods 8th. Clear skies am 9th
8
9
1025.8
8.2
74
5
W
11.0
-
17.5
4.7
0.0
1.4
10.67
998
4.1
23
Prolonged sunshine 8th. Clear then cloudy am 9th
9
10
1007.6
9.7
77
8
WNW
11.0
-
15.1
5.7
0.0
3.0
9.27
1086
3.1
23
Prolonged sunshine 9th. Clear then cloudy am 10th
10
11
999.4
12.6
74
6
E
11.0
-
17.4
4.2
0.0
– 2.5
11.80
979
3.8
23
Sunny periods 10th. Clear skies am 11th
11
12
998.3
10.8
84
8
E
11.0
-
12.7
4.8
0.9
2.3
1.56
951
1.8
19
Prolonged sunshine 11th. Clear then cloudy am 12th
12
13
998.8
9.8
99
SE
2
11.5
-
13.3
8.4
0.6
8.4
0.82
991
1.5
44
Haar pm 12th. Heavy shower 0710h 13th
13
14
1010.7
12.6
74
WSW
12
12.0
-
16.7
9.8
2.3
8.8
8.91
1025
4.1
30
Shower midday 13th. Cloudy am 14th
14
15
1012.4
9.2
93
S
18
11.0
-
15.1
8.6
3.8
7.5
0.27
482
1.5
45
Sunny periods 14th. Rain 0700h onwards am 15th
15
16
1012.1
15.7
83
SW
15
12.5
-
18.1
9.2
0.1
11.3
10.87
974
3.6
42
Rain am 15th and early am 16th
16
17
1015.9
14.1
70
SSW
6
12.0
-
17.6
8.1
trace
3.8
7.70
997
3.3
20
Prolonged sunshine 16th. Clear am 17th
17
18
1010.3
12.6
68
W
8
13.0
-
18.0
8.9
0.0
5.9
6.96
1148
2.8
17
Sunny periods 17th, occ light shwrs. Clear am 18th
18
19
1011.0
12.4
70
NNE
1
12.5
-
14.8
6.3
5.0
3.0
3.51
628
1.8
14
Sunny periods 18th. Clear turning cloudy am 19th
19
20
1009.9
9.3
92
W
9
12.0
-
13.7
7.6
6.9
7.1
3.00
812
1.5
25
Sunny intervals 19th. Cloudy with rain am 20th
20
21
1018.9
12.4
75
SSW
9
13.0
-
14.9
8.2
0.0
6.1
3.10
819
2.5
32
Rain 21st, drier later. Cloudy am 22nd
21
22
1014.6
12.9
80
SSW
4
12.5
-
18.3
8.6
4.8
5.7
1.20
519
1.5
31
Sunny intervals pm 21st. Cloudy am 22nd
22
23
1017.1
12.8
79
W
11
12.0
-
16.8
7.9
0.5
5.8
6.27
1078
2.8
29
Rain am & evening 22nd. Rather cloudy am 23rd
23
24
1023.8
14.4
91
WNW
8
14.0
-
20.8
11.9
trace
12.2
5.86
1085
3.0
30
Light rain evening 23rd. Cloudy am 24th
24
25
1023.7
19.8
77
NNE
2
14.0
-
24.6
14.1
0.0
10.4
15.94
838
3.0
14
Sunny intervals 24th. Clear am 25th
25
26
1017.7
22.8
64
SSE
8
16.0
-
28.3
15.9
0.0
11.4
16.00
849
5.3
21
Unbroken sunshine 25th. Clear am 26th
26
27
1009.6
19.4
72
E
8
16
-
17.0
13.0
Unbroken sunshine 26th. Cloudier am 27th
27
28
 
28
29
 
29
30
 
30
31
 
31
 
   
Total/
Mean
16.1
7.8
24.9
– 2.4
199.34
1148
75.4
47
 
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)
6Max
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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