Solar radiation in Grahamstown 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, April 2
Total: 4342 wh/m2Hours07:0037 w/m2
08:00102 w/m2
09:00292 w/m2
10:00341 w/m2
11:00441 w/m2
12:00662 w/m2
13:00770 w/m2
14:00679 w/m2
15:00542 w/m2
16:00323 w/m2
17:00152 w/m2
18:001 w/m2
Tomorrow, April 3
Total: 5172 wh/m2Hours07:0040 w/m2
08:00242 w/m2
09:00446 w/m2
10:00588 w/m2
11:00595 w/m2
12:00755 w/m2
13:00764 w/m2
14:00685 w/m2
15:00547 w/m2
16:00361 w/m2
17:00148 w/m2
18:001 w/m2
Friday, April 4
Total: 1349 wh/m2Hours07:0020 w/m2
08:0072 w/m2
09:00111 w/m2
10:00152 w/m2
11:00181 w/m2
12:00193 w/m2
13:00190 w/m2
14:00170 w/m2
15:00135 w/m2
16:0089 w/m2
17:0036 w/m2
Saturday, April 5
Total: 2304 wh/m2Hours07:009 w/m2
08:0059 w/m2
09:00363 w/m2
10:00288 w/m2
11:00179 w/m2
12:00192 w/m2
13:00207 w/m2
14:00168 w/m2
15:00384 w/m2
16:00319 w/m2
17:00136 w/m2
Sunday, April 6
Total: 4647 wh/m2Hours07:0020 w/m2
08:00136 w/m2
09:00312 w/m2
10:00502 w/m2
11:00643 w/m2
12:00705 w/m2
13:00702 w/m2
14:00635 w/m2
15:00518 w/m2
16:00341 w/m2
17:00133 w/m2
Monday, April 7
Total: 3915 wh/m2Hours07:0020 w/m2
08:0099 w/m2
09:00348 w/m2
10:00572 w/m2
11:00707 w/m2
12:00733 w/m2
13:00633 w/m2
14:00387 w/m2
15:00259 w/m2
16:00125 w/m2
17:0032 w/m2
Tuesday, April 8
Total: 1274 wh/m2Hours07:008 w/m2
08:0056 w/m2
09:00107 w/m2
10:00148 w/m2
11:00176 w/m2
12:00188 w/m2
13:00184 w/m2
14:00164 w/m2
15:00129 w/m2
16:0083 w/m2
17:0031 w/m2
Wednesday, April 9
Total: 1262 wh/m2Hours07:007 w/m2
08:0055 w/m2
09:00106 w/m2
10:00147 w/m2
11:00174 w/m2
12:00187 w/m2
13:00183 w/m2
14:00163 w/m2
15:00128 w/m2
16:0082 w/m2
17:0030 w/m2
Thursday, April 10
Total: 2093 wh/m2Hours07:0010 w/m2
08:0095 w/m2
09:00164 w/m2
10:00189 w/m2
11:00191 w/m2
12:00258 w/m2
13:00300 w/m2
14:00307 w/m2
15:00288 w/m2
16:00208 w/m2
17:0083 w/m2
Friday, April 11
Total: 1628 wh/m2Hours07:0020 w/m2
08:00162 w/m2
09:00256 w/m2
10:00263 w/m2
11:00172 w/m2
12:00184 w/m2
13:00180 w/m2
14:00160 w/m2
15:00125 w/m2
16:0079 w/m2
17:0027 w/m2
Saturday, April 12
Total: 3492 wh/m2Hours07:0023 w/m2
08:00210 w/m2
09:00396 w/m2
10:00517 w/m2
11:00531 w/m2
12:00506 w/m2
13:00430 w/m2
14:00301 w/m2
15:00289 w/m2
16:00210 w/m2
17:0079 w/m2
Sunday, April 13
Total: 4695 wh/m2Hours07:0021 w/m2
08:00208 w/m2
09:00407 w/m2
10:00569 w/m2
11:00678 w/m2
12:00726 w/m2
13:00708 w/m2
14:00627 w/m2
15:00480 w/m2
16:00246 w/m2
17:0025 w/m2
Monday, April 14
Total: 3054 wh/m2Hours07:0020 w/m2
08:00205 w/m2
09:00400 w/m2
10:00538 w/m2
11:00562 w/m2
12:00517 w/m2
13:00387 w/m2
14:00186 w/m2
15:00133 w/m2
16:0082 w/m2
17:0024 w/m2
Tuesday, April 15
Total: 3850 wh/m2Hours07:0016 w/m2
08:00121 w/m2
09:00286 w/m2
10:00452 w/m2
11:00580 w/m2
12:00591 w/m2
13:00542 w/m2
14:00442 w/m2
15:00439 w/m2
16:00290 w/m2
17:0091 w/m2
Wednesday, April 16
Total: 4433 wh/m2Hours07:0015 w/m2
08:00158 w/m2
09:00349 w/m2
10:00521 w/m2
11:00645 w/m2
12:00684 w/m2
13:00660 w/m2
14:00573 w/m2
15:00457 w/m2
16:00284 w/m2
17:0087 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.
