Solar radiation in Johannesberg 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, March 31
Total: 2573 wh/m2Hours08:0024 w/m2
09:0070 w/m2
10:00205 w/m2
11:00312 w/m2
12:00150 w/m2
13:00225 w/m2
14:00456 w/m2
15:00434 w/m2
16:00330 w/m2
17:00117 w/m2
18:00201 w/m2
19:0049 w/m2
Tomorrow, April 1
Total: 3224 wh/m2Hours08:0065 w/m2
09:00221 w/m2
10:00366 w/m2
11:00418 w/m2
12:00511 w/m2
13:00336 w/m2
14:00241 w/m2
15:00165 w/m2
16:00428 w/m2
17:00221 w/m2
18:00197 w/m2
19:0055 w/m2
Wednesday, April 2
Total: 2846 wh/m2Hours08:0021 w/m2
09:0057 w/m2
10:0096 w/m2
11:00179 w/m2
12:00591 w/m2
13:00464 w/m2
14:00228 w/m2
15:00166 w/m2
16:00432 w/m2
17:00346 w/m2
18:00208 w/m2
19:0058 w/m2
Thursday, April 3
Total: 4934 wh/m2Hours08:0075 w/m2
09:00233 w/m2
10:00390 w/m2
11:00523 w/m2
12:00616 w/m2
13:00664 w/m2
14:00661 w/m2
15:00609 w/m2
16:00511 w/m2
17:00375 w/m2
18:00216 w/m2
19:0061 w/m2
Friday, April 4
Total: 4897 wh/m2Hours08:0079 w/m2
09:00238 w/m2
10:00396 w/m2
11:00528 w/m2
12:00621 w/m2
13:00660 w/m2
14:00633 w/m2
15:00589 w/m2
16:00500 w/m2
17:00371 w/m2
18:00218 w/m2
19:0064 w/m2
Saturday, April 5
Total: 4438 wh/m2Hours08:0043 w/m2
09:00214 w/m2
10:00398 w/m2
11:00534 w/m2
12:00619 w/m2
13:00585 w/m2
14:00319 w/m2
15:00536 w/m2
16:00513 w/m2
17:00384 w/m2
18:00225 w/m2
19:0068 w/m2
Sunday, April 6
Total: 5107 wh/m2Hours08:0089 w/m2
09:00250 w/m2
10:00408 w/m2
11:00539 w/m2
12:00632 w/m2
13:00679 w/m2
14:00675 w/m2
15:00622 w/m2
16:00524 w/m2
17:00389 w/m2
18:00229 w/m2
19:0071 w/m2
Monday, April 7
Total: 4646 wh/m2Hours07:001 w/m2
08:0094 w/m2
09:00256 w/m2
10:00413 w/m2
11:00545 w/m2
12:00637 w/m2
13:00683 w/m2
14:00680 w/m2
15:00611 w/m2
16:00422 w/m2
17:0098 w/m2
18:00144 w/m2
19:0062 w/m2
Tuesday, April 8
Total: 2524 wh/m2Hours07:001 w/m2
08:0025 w/m2
09:0065 w/m2
10:00105 w/m2
11:00138 w/m2
12:00161 w/m2
13:00172 w/m2
14:00171 w/m2
15:00469 w/m2
16:00506 w/m2
17:00396 w/m2
18:00237 w/m2
19:0078 w/m2
Wednesday, April 9
Total: 3847 wh/m2Hours07:002 w/m2
08:00105 w/m2
09:00265 w/m2
10:00402 w/m2
11:00454 w/m2
12:00473 w/m2
13:00428 w/m2
14:00328 w/m2
15:00393 w/m2
16:00392 w/m2
17:00324 w/m2
18:00208 w/m2
19:0073 w/m2
Thursday, April 10
Total: 5235 wh/m2Hours07:003 w/m2
08:00110 w/m2
09:00273 w/m2
10:00430 w/m2
11:00560 w/m2
12:00650 w/m2
13:00683 w/m2
14:00641 w/m2
15:00617 w/m2
16:00534 w/m2
17:00404 w/m2
18:00245 w/m2
19:0085 w/m2
Friday, April 11
Total: 5364 wh/m2Hours07:004 w/m2
08:00100 w/m2
09:00268 w/m2
10:00433 w/m2
11:00566 w/m2
12:00657 w/m2
13:00702 w/m2
14:00698 w/m2
15:00644 w/m2
16:00545 w/m2
17:00409 w/m2
18:00249 w/m2
19:0089 w/m2
Saturday, April 12
Total: 2137 wh/m2Hours07:005 w/m2
08:00109 w/m2
09:00224 w/m2
10:00258 w/m2
11:00157 w/m2
12:00182 w/m2
13:00212 w/m2
14:00227 w/m2
15:00225 w/m2
16:00203 w/m2
17:00162 w/m2
18:00121 w/m2
19:0052 w/m2
Sunday, April 13
Total: 5464 wh/m2Hours07:005 w/m2
08:00107 w/m2
09:00276 w/m2
10:00442 w/m2
11:00575 w/m2
12:00666 w/m2
13:00711 w/m2
14:00706 w/m2
15:00652 w/m2
16:00553 w/m2
17:00417 w/m2
18:00257 w/m2
19:0096 w/m2
20:001 w/m2
Monday, April 14
Total: 5372 wh/m2Hours07:008 w/m2
08:00127 w/m2
09:00289 w/m2
10:00443 w/m2
11:00568 w/m2
12:00658 w/m2
13:00704 w/m2
14:00700 w/m2
15:00634 w/m2
16:00520 w/m2
17:00372 w/m2
18:00250 w/m2
19:0098 w/m2
20:001 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.
