Solar radiation in Johannesburg / Rand Solar radiation 15 days
In the following list by days you can know the forecast of the predicted solar radiation. To know the data hour by hour, click on the day that interests you. If you have a solar panel system, these data will be useful to predict the energy it will produce.
The unit of measurement for solar radiation is expressed in W/m2 (Watts per square meter).
Solar radiation
Today, November 22
Total: 4057 wh/m2Hours06:0091 w/m2
07:00243 w/m2
08:00387 w/m2
09:00677 w/m2
10:00858 w/m2
11:00290 w/m2
12:00324 w/m2
13:00312 w/m2
14:00279 w/m2
15:00192 w/m2
16:00138 w/m2
17:00211 w/m2
18:0055 w/m2
Tomorrow, November 23
Total: 8654 wh/m2Hours06:00116 w/m2
07:00360 w/m2
08:00598 w/m2
09:00803 w/m2
10:00959 w/m2
11:001054 w/m2
12:001082 w/m2
13:001041 w/m2
14:00934 w/m2
15:00768 w/m2
16:00556 w/m2
17:00307 w/m2
18:0076 w/m2
Sunday, November 24
Total: 7606 wh/m2Hours06:0099 w/m2
07:00301 w/m2
08:00494 w/m2
09:00691 w/m2
10:00927 w/m2
11:001051 w/m2
12:001044 w/m2
13:001002 w/m2
14:00882 w/m2
15:00743 w/m2
16:00255 w/m2
17:0079 w/m2
18:0038 w/m2
Monday, November 25
Total: 7994 wh/m2Hours06:00117 w/m2
07:00361 w/m2
08:00599 w/m2
09:00804 w/m2
10:00960 w/m2
11:001056 w/m2
12:001085 w/m2
13:001045 w/m2
14:00938 w/m2
15:00738 w/m2
16:00182 w/m2
17:0088 w/m2
18:0021 w/m2
Tuesday, November 26
Total: 7644 wh/m2Hours06:00118 w/m2
07:00361 w/m2
08:00599 w/m2
09:00804 w/m2
10:00960 w/m2
11:001057 w/m2
12:001086 w/m2
13:001045 w/m2
14:00663 w/m2
15:00233 w/m2
16:00330 w/m2
17:00309 w/m2
18:0079 w/m2
Wednesday, November 27
Total: 4132 wh/m2Hours06:00109 w/m2
07:00349 w/m2
08:00593 w/m2
09:00743 w/m2
10:00690 w/m2
11:00317 w/m2
12:00299 w/m2
13:00288 w/m2
14:00236 w/m2
15:00214 w/m2
16:00156 w/m2
17:0098 w/m2
18:0040 w/m2
Thursday, November 28
Total: 8753 wh/m2Hours06:00118 w/m2
07:00361 w/m2
08:00599 w/m2
09:00805 w/m2
10:00961 w/m2
11:001058 w/m2
12:001088 w/m2
13:001049 w/m2
14:00944 w/m2
15:00780 w/m2
16:00570 w/m2
17:00330 w/m2
18:0090 w/m2
Friday, November 29
Total: 8712 wh/m2Hours06:00118 w/m2
07:00356 w/m2
08:00583 w/m2
09:00796 w/m2
10:00959 w/m2
11:001058 w/m2
12:001089 w/m2
13:001050 w/m2
14:00946 w/m2
15:00781 w/m2
16:00566 w/m2
17:00321 w/m2
18:0089 w/m2
Saturday, November 30
Total: 7352 wh/m2Hours06:00119 w/m2
07:00362 w/m2
08:00599 w/m2
09:00805 w/m2
10:00961 w/m2
11:001055 w/m2
12:001036 w/m2
13:00829 w/m2
14:00392 w/m2
15:00446 w/m2
16:00398 w/m2
17:00261 w/m2
18:0089 w/m2
Sunday, December 1
Total: 8804 wh/m2Hours06:00119 w/m2
07:00362 w/m2
08:00599 w/m2
09:00805 w/m2
10:00962 w/m2
11:001060 w/m2
12:001091 w/m2
13:001054 w/m2
14:00950 w/m2
15:00787 w/m2
16:00578 w/m2
17:00339 w/m2
18:0098 w/m2
Monday, December 2
Total: 8402 wh/m2Hours06:00119 w/m2
07:00361 w/m2
08:00599 w/m2
09:00805 w/m2
10:00962 w/m2
11:001060 w/m2
12:001092 w/m2
13:001055 w/m2
14:00952 w/m2
15:00771 w/m2
16:00475 w/m2
17:00111 w/m2
18:0040 w/m2
Tuesday, December 3
Total: 7231 wh/m2Hours06:00118 w/m2
07:00361 w/m2
08:00599 w/m2
09:00804 w/m2
10:00961 w/m2
11:001054 w/m2
12:001034 w/m2
13:00863 w/m2
14:00508 w/m2
15:00407 w/m2
16:00300 w/m2
17:00171 w/m2
18:0051 w/m2
Wednesday, December 4
Total: 7571 wh/m2Hours06:00118 w/m2
07:00351 w/m2
08:00547 w/m2
09:00735 w/m2
10:00879 w/m2
11:00969 w/m2
12:00986 w/m2
13:00933 w/m2
14:00829 w/m2
15:00617 w/m2
16:00389 w/m2
17:00172 w/m2
18:0046 w/m2
Thursday, December 5
Total: 7774 wh/m2Hours06:0098 w/m2
07:00272 w/m2
08:00397 w/m2
09:00715 w/m2
10:00944 w/m2
11:001061 w/m2
12:001086 w/m2
13:001027 w/m2
14:00874 w/m2
15:00659 w/m2
16:00399 w/m2
17:00167 w/m2
18:0075 w/m2
Friday, December 6
Total: 7418 wh/m2Hours06:0096 w/m2
07:00353 w/m2
08:00598 w/m2
09:00803 w/m2
10:00956 w/m2
11:001035 w/m2
12:00974 w/m2
13:00733 w/m2
14:00311 w/m2
15:00563 w/m2
16:00537 w/m2
17:00348 w/m2
18:00111 w/m2
To carry out the solar radiation forecast, the angle of incidence of solar radiation is taken into account, which depends, among others, on the declination, latitude, inclination and hour angle. The weather forecast is also taken into account, since, for example, on a cloudy day we would only have diffuse radiation, much less than direct radiation.
