Maximum potential solar radiation


Annual average maximum 920.02 W/m2
Minimum 620.65 W/m2
21 June
Maximum 1136.98 W/m2
29 December

Months


15 January 12.17 1133.45
15 February 12.22 1094.2
15 March 12.17 998.041
15 April 12.08 845.151
15 May 12.04 700.598
15 June 12.08 623.189
15 July 12.14 652.856
15 August 12.12 773.574
15 September 12.03 926.341
15 October 11.54 1047.39
15 November 11.52 1114.09
15 December 12.03 1135.04

Days


1 January 12.11 1136.91
2 January 12.11 1136.84
3 January 12.12 1136.75
4 January 12.12 1136.64
5 January 12.13 1136.5
6 January 12.13 1136.33
7 January 12.14 1136.14
8 January 12.14 1135.92
9 January 12.15 1135.66
10 January 12.15 1135.38
11 January 12.15 1135.06
12 January 12.16 1134.71
13 January 12.16 1134.32
14 January 12.17 1133.9
15 January 12.17 1133.45
16 January 12.17 1132.95
17 January 12.18 1132.41
18 January 12.18 1131.84
19 January 12.18 1131.22
20 January 12.19 1130.55
21 January 12.19 1129.85
22 January 12.19 1129.09
23 January 12.19 1128.51
24 January 12.20 1127.67
25 January 12.20 1126.78
26 January 12.20 1125.83
27 January 12.20 1124.84
28 January 12.21 1123.79
29 January 12.21 1122.68
30 January 12.21 1121.52
31 January 12.21 1120.29
1 February 12.21 1119.01
2 February 12.21 1117.67
3 February 12.22 1116.26
4 February 12.22 1114.79
5 February 12.22 1113.26
6 February 12.22 1111.66
7 February 12.22 1110
8 February 12.22 1108.27
9 February 12.22 1106.47
10 February 12.22 1104.6
11 February 12.22 1102.67
12 February 12.22 1100.66
13 February 12.22 1098.58
14 February 12.22 1096.43
15 February 12.22 1094.2
16 February 12.22 1091.91
17 February 12.22 1089.54
18 February 12.22 1087.1
19 February 12.22 1084.58
20 February 12.22 1081.99
21 February 12.21 1079.32
22 February 12.21 1076.58
23 February 12.21 1073.77
24 February 12.21 1070.88
25 February 12.21 1067.92
26 February 12.21 1064.88
27 February 12.21 1061.77
28 February 12.20 1058.58
29 February 12.20 1055.32
1 March 12.20 1051.99
2 March 12.20 1048.59
3 March 12.20 1045.11
4 March 12.19 1041.56
5 March 12.19 1037.94
6 March 12.19 1034.25
7 March 12.19 1030.49
8 March 12.18 1026.66
9 March 12.18 1022.77
10 March 12.18 1018.81
11 March 12.18 1014.78
12 March 12.17 1010.69
13 March 12.17 1006.54
14 March 12.17 1002.32
15 March 12.17 998.041
16 March 12.16 993.705
17 March 12.16 989.311
18 March 12.16 984.858
19 March 12.15 980.35
20 March 12.15 975.792
21 March 12.15 971.18
22 March 12.15 966.516
23 March 12.14 961.807
24 March 12.14 957.051
25 March 12.14 952.247
26 March 12.13 947.402
27 March 12.13 942.517
28 March 12.13 937.59
29 March 12.12 932.626
30 March 12.12 927.63
31 March 12.12 922.599
1 April 12.12 918.073
2 April 12.11 912.981
3 April 12.11 907.861
4 April 12.11 902.714
5 April 12.10 897.546
6 April 12.10 892.36
7 April 12.10 887.153
8 April 12.09 881.93
9 April 12.09 876.698
10 April 12.09 871.453
11 April 12.09 866.199
12 April 12.08 860.939
13 April 12.08 855.678
14 April 12.08 850.414
15 April 12.08 845.151
16 April 12.07 839.892
17 April 12.07 834.642
18 April 12.07 829.4
19 April 12.07 824.169
20 April 12.07 818.951
21 April 12.06 813.752
22 April 12.06 808.572
23 April 12.06 803.414
24 April 12.06 798.279
25 April 12.06 793.171
26 April 12.05 788.093
27 April 12.05 783.049
28 April 12.05 778.038
29 April 12.05 773.065
30 April 12.05 768.131
1 May 12.05 763.24
2 May 12.05 758.392
3 May 12.05 753.592
4 May 12.04 748.844
5 May 12.04 744.148
6 May 12.04 739.507
7 May 12.04 734.923
8 May 12.04 730.398
9 May 12.04 725.936
10 May 12.04 721.538
11 May 12.04 717.207
12 May 12.04 712.945
13 May 12.04 708.755
14 May 12.04 704.638
15 May 12.04 700.598
16 May 12.04 696.635
17 May 12.04 692.753
18 May 12.04 688.953
19 May 12.04 685.238
20 May 12.04 681.609
21 May 12.04 678.069
22 May 12.04 674.619
23 May 12.04 671.261
24 May 12.05 667.998
25 May 12.05 664.832
26 May 12.05 661.763
27 May 12.05 658.794
28 May 12.05 655.925
29 May 12.05 653.159
30 May 12.05 650.497
31 May 12.05 647.939
1 June 12.06 645.49
2 June 12.06 643.15
3 June 12.06 640.92
4 June 12.06 638.799
5 June 12.06 636.791
6 June 12.06 634.894
7 June 12.07 633.113
8 June 12.07 631.448
9 June 12.07 630.051
10 June 12.07 628.611
11 June 12.07 627.288
12 June 12.08 626.084
13 June 12.08 625.001
14 June 12.08 624.036
15 June 12.08 623.189
16 June 12.08 622.462
17 June 12.09 621.858
18 June 12.09 621.375
19 June 12.09 621.011
20 June 12.09 620.768
21 June 12.10 620.646
22 June 12.10 620.647
23 June 12.10 620.767
24 June 12.10 621.008
25 June 12.10 621.368
26 June 12.11 621.85
27 June 12.11 622.452
28 June 12.11 623.172
29 June 12.11 624.01
30 June 12.11 624.965
1 July 12.12 626.041
2 July 12.12 627.232
3 July 12.12 628.538
4 July 12.12 629.959
5 July 12.12 631.492
6 July 12.13 633.141
7 July 12.13 634.902
8 July 12.13 636.772
9 July 12.13 638.752
10 July 12.13 640.84
11 July 12.13 643.034
12 July 12.14 645.333
13 July 12.14 647.739
14 July 12.14 650.247
15 July 12.14 652.856
16 July 12.14 655.564
17 July 12.14 658.369
18 July 12.14 661.271
19 July 12.14 664.267
20 July 12.14 667.356
21 July 12.14 670.535
22 July 12.14 673.804
23 July 12.14 677.16
24 July 12.14 680.601
25 July 12.14 684.125
26 July 12.14 687.731
27 July 12.14 691.416
28 July 12.14 695.178
29 July 12.14 699.015
30 July 12.14 702.925
31 July 12.14 706.906
1 August 12.14 710.956
2 August 12.14 715.071
3 August 12.14 719.251
4 August 12.14 723.493
5 August 12.14 727.794
6 August 12.14 732.152
7 August 12.14 736.565
8 August 12.14 741.03
9 August 12.13 745.547
10 August 12.13 750.113
11 August 12.13 754.723
12 August 12.13 759.377
13 August 12.13 764.072
14 August 12.13 768.804
15 August 12.12 773.574
16 August 12.12 778.379
17 August 12.12 783.214
18 August 12.12 787.771
19 August 12.12 792.653
20 August 12.11 797.563
21 August 12.11 802.494
22 August 12.11 807.444
23 August 12.11 812.409
24 August 12.10 817.393
25 August 12.10 822.39
26 August 12.10 827.395
27 August 12.09 832.408
28 August 12.09 837.43
29 August 12.09 842.454
30 August 12.09 847.477
31 August 12.08 852.504
1 September 12.08 857.526
2 September 12.08 862.54
3 September 12.07 867.551
4 September 12.07 872.551
5 September 12.07 877.538
6 September 12.06 882.514
7 September 12.06 887.473
8 September 12.06 892.412
9 September 12.05 897.335
10 September 12.05 902.235
11 September 12.05 907.109
12 September 12.04 911.962
13 September 12.04 916.784
14 September 12.03 921.576
15 September 12.03 926.341
16 September 12.03 931.07
17 September 12.02 935.764
18 September 12.02 940.424
19 September 12.02 945.042
20 September 12.01 949.623
21 September 12.01 954.164
22 September 12.01 958.658
23 September 12.00 963.112
24 September 12.00 967.519
25 September 12.00 971.876
26 September 11.59 976.188
27 September 11.59 980.449
28 September 11.59 984.656
29 September 11.58 988.816
30 September 11.58 992.919
1 October 11.58 996.966
2 October 11.57 1000.96
3 October 11.57 1004.9
4 October 11.57 1008.77
5 October 11.56 1012.59
6 October 11.56 1016.36
7 October 11.56 1020.05
8 October 11.55 1023.69
9 October 11.55 1027.27
10 October 11.55 1030.78
11 October 11.55 1034.23
12 October 11.54 1037.62
13 October 11.54 1040.94
14 October 11.54 1044.2
15 October 11.54 1047.39
16 October 11.53 1050.52
17 October 11.53 1053.58
18 October 11.53 1056.58
19 October 11.53 1059.51
20 October 11.53 1062.37
21 October 11.52 1065.17
22 October 11.52 1067.9
23 October 11.52 1070.56
24 October 11.52 1073.16
25 October 11.54 1075.65
26 October 11.52 1077.57
27 October 11.52 1079.97
28 October 11.52 1082.31
29 October 11.52 1084.59
30 October 11.52 1086.8
31 October 11.51 1088.95
1 November 11.51 1091.04
2 November 11.51 1093.06
3 November 11.51 1095.03
4 November 11.51 1096.93
5 November 11.51 1098.77
6 November 11.51 1100.55
7 November 11.52 1102.28
8 November 11.52 1103.95
9 November 11.52 1105.56
10 November 11.52 1107.12
11 November 11.52 1108.62
12 November 11.52 1110.06
13 November 11.52 1111.46
14 November 11.52 1112.8
15 November 11.52 1114.09
16 November 11.53 1115.34
17 November 11.53 1116.53
18 November 11.53 1117.68
19 November 11.53 1118.78
20 November 11.53 1119.84
21 November 11.54 1120.86
22 November 11.54 1121.83
23 November 11.54 1122.76
24 November 11.55 1123.65
25 November 11.55 1124.5
26 November 11.55 1125.31
27 November 11.55 1126.09
28 November 11.56 1126.83
29 November 11.56 1127.54
30 November 11.57 1128.22
1 December 11.57 1128.86
2 December 11.57 1129.47
3 December 11.58 1130.06
4 December 11.58 1130.61
5 December 11.58 1131.13
6 December 11.59 1131.63
7 December 11.59 1132.11
8 December 12.00 1132.55
9 December 12.00 1132.98
10 December 12.01 1133.37
11 December 12.01 1133.75
12 December 12.02 1134.1
13 December 12.02 1134.44
14 December 12.03 1134.74
15 December 12.03 1135.04
16 December 12.03 1135.3
17 December 12.04 1135.55
18 December 12.04 1135.78
19 December 12.05 1135.99
20 December 12.05 1136.18
21 December 12.06 1136.35
22 December 12.06 1136.5
23 December 12.07 1136.63
24 December 12.07 1136.74
25 December 12.08 1136.83
26 December 12.08 1136.9
27 December 12.09 1136.95
28 December 12.09 1136.98
29 December 12.10 1136.98
30 December 12.10 1136.97
31 December 12.11 1136.93


Units

Language



This wiki might help to use the full potential of Groenkloof weather website. The info section explains the hard and software and connections used.(In the menu bar under the sub menus Weather station and Groenkloof Weather) Weather data updates every minute.(for both the mobile and desktop sites) There is a mobile page with current conditions, forecast, forecast map, station history (with drop down menu for today, yesterday, month, year etc. showing all parameters) and lastly a graph with drop down menu for time period and parameter. (Very useful for quick references ) One can switch to the desktop page using the link in bottom right hand corner and vice versa. The desktop version is where very detailed weather info is available. ( Useful for more in depth detail ) It is divided in “blocks” The sunrise/sunset times and day length is shown. Moon with dates of full moon, new moon etc. The current block shows weather values in easy to read numerical format and updates every minute. “Live gauges” updates every minute and when the curser is hovered over a parameter it will show the min and max values and the time when this occurred. In the forecast maps one can use the menu bar top left of block to choose from windy or dark sky maps. Within the map one can choose from different parameters like wind, temperature, rain, thunder, clouds, pressure etc. Then station data is shown with now, max, min values and drop down menu for different time periods. There is also a history block where one can choose different parameters and a trends block with 1,3,6,12,24 hrs etc trends. Next is a forecast meteogram which is dynamic and moving the cursor over it will show all weather parameters at that point. Then easy to read forecast with dropdown the default using the Norwegian institute of meteorology values.(seems to be most accurate) Next is rainfall for today, this month, this year (from January) Drop down gives more options like seasonal(from September) etc. Rain balance is the stations values measured against 100 year rain data for Pretoria obtained from SA weather services. Next is graph with several drop down options and a day pie graph where one can pick dates and parameters. In extremes one can pick a parameter like absolute temperature, precipitation etc. to see max/min value dates and times. There is a air quality block click within block for more info. Map to show location of station. Webcam with view from Herbert Baker Street updates every 5 minutes. For aviation enthusiasts Cloud height time to sunset and density altitude. Then SA weather warnings from SA weather services, lightning detection and fire danger index. Followed by calendar, earthquakes and astronomical events. World weather...shows current conditions in few world cities. Database: data is stored every 5 mins and available data runs from January 2014. The menu at the top is really self explanatory and here there are countless information, statistics etc. Enjoy!! Leon :leonrossouw@me.com P.S. since August 2021 I have added Solar, Uv sensors, Air Quality, soil moisture and lightning detection.

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