Solar radiation in Port St Johns 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, June 30
Total: 3150 wh/m2Hours08:0071 w/m2
09:00251 w/m2
10:00413 w/m2
11:00512 w/m2
12:00541 w/m2
13:00520 w/m2
14:00409 w/m2
15:00292 w/m2
16:00139 w/m2
17:002 w/m2
Tomorrow, July 1
Total: 3366 wh/m2Hours08:00112 w/m2
09:00287 w/m2
10:00430 w/m2
11:00523 w/m2
12:00559 w/m2
13:00535 w/m2
14:00452 w/m2
15:00318 w/m2
16:00147 w/m2
17:003 w/m2
Tuesday, July 2
Total: 2809 wh/m2Hours08:00111 w/m2
09:00287 w/m2
10:00430 w/m2
11:00524 w/m2
12:00560 w/m2
13:00517 w/m2
14:00216 w/m2
15:00118 w/m2
16:0044 w/m2
17:002 w/m2
Wednesday, July 3
Total: 3149 wh/m2Hours08:00104 w/m2
09:00279 w/m2
10:00421 w/m2
11:00525 w/m2
12:00536 w/m2
13:00393 w/m2
14:00445 w/m2
15:00318 w/m2
16:00125 w/m2
17:003 w/m2
Thursday, July 4
Total: 3398 wh/m2Hours08:00113 w/m2
09:00289 w/m2
10:00433 w/m2
11:00527 w/m2
12:00563 w/m2
13:00539 w/m2
14:00457 w/m2
15:00323 w/m2
16:00151 w/m2
17:003 w/m2
Friday, July 5
Total: 3413 wh/m2Hours08:00114 w/m2
09:00290 w/m2
10:00434 w/m2
11:00528 w/m2
12:00565 w/m2
13:00541 w/m2
14:00459 w/m2
15:00325 w/m2
16:00153 w/m2
17:004 w/m2
Saturday, July 6
Total: 3425 wh/m2Hours08:00114 w/m2
09:00291 w/m2
10:00435 w/m2
11:00530 w/m2
12:00566 w/m2
13:00543 w/m2
14:00461 w/m2
15:00327 w/m2
16:00154 w/m2
17:004 w/m2
Sunday, July 7
Total: 2445 wh/m2Hours08:0097 w/m2
09:00210 w/m2
10:00240 w/m2
11:00172 w/m2
12:00360 w/m2
13:00451 w/m2
14:00432 w/m2
15:00322 w/m2
16:00156 w/m2
17:005 w/m2
Monday, July 8
Total: 3457 wh/m2Hours08:00116 w/m2
09:00293 w/m2
10:00438 w/m2
11:00533 w/m2
12:00570 w/m2
13:00547 w/m2
14:00465 w/m2
15:00331 w/m2
16:00159 w/m2
17:005 w/m2
Tuesday, July 9
Total: 3380 wh/m2Hours08:00117 w/m2
09:00295 w/m2
10:00440 w/m2
11:00535 w/m2
12:00569 w/m2
13:00531 w/m2
14:00412 w/m2
15:00317 w/m2
16:00158 w/m2
17:006 w/m2
Wednesday, July 10
Total: 2330 wh/m2Hours08:00118 w/m2
09:00295 w/m2
10:00429 w/m2
11:00484 w/m2
12:00446 w/m2
13:00314 w/m2
14:00117 w/m2
15:0084 w/m2
16:0041 w/m2
17:002 w/m2
Thursday, July 11
Total: 3387 wh/m2Hours08:00117 w/m2
09:00292 w/m2
10:00435 w/m2
11:00528 w/m2
12:00565 w/m2
13:00541 w/m2
14:00461 w/m2
15:00311 w/m2
16:00133 w/m2
17:004 w/m2
Friday, July 12
Total: 3530 wh/m2Hours08:00120 w/m2
09:00299 w/m2
10:00445 w/m2
11:00541 w/m2
12:00579 w/m2
13:00556 w/m2
14:00475 w/m2
15:00340 w/m2
16:00167 w/m2
17:008 w/m2
Saturday, July 13
Total: 3491 wh/m2Hours08:0089 w/m2
09:00278 w/m2
10:00443 w/m2
11:00543 w/m2
12:00582 w/m2
13:00559 w/m2
14:00477 w/m2
15:00343 w/m2
16:00169 w/m2
17:008 w/m2
Sunday, July 14
Total: 3532 wh/m2Hours08:00123 w/m2
09:00302 w/m2
10:00447 w/m2
11:00539 w/m2
12:00582 w/m2
13:00561 w/m2
14:00480 w/m2
15:00340 w/m2
16:00152 w/m2
17:006 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.
