Solar radiation in Viana do Castelo 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: 6223 wh/m2Hours08:0062 w/m2
09:00262 w/m2
10:00460 w/m2
11:00627 w/m2
12:00749 w/m2
13:00818 w/m2
14:00827 w/m2
15:00777 w/m2
16:00672 w/m2
17:00518 w/m2
18:00328 w/m2
19:00123 w/m2
Tomorrow, April 1
Total: 3737 wh/m2Hours08:0031 w/m2
09:0087 w/m2
10:00116 w/m2
11:00174 w/m2
12:00279 w/m2
13:00771 w/m2
14:00799 w/m2
15:00689 w/m2
16:00546 w/m2
17:00130 w/m2
18:0083 w/m2
19:0032 w/m2
Wednesday, April 2
Total: 2081 wh/m2Hours08:0025 w/m2
09:00113 w/m2
10:00319 w/m2
11:00404 w/m2
12:00190 w/m2
13:00207 w/m2
14:00209 w/m2
15:00196 w/m2
16:00170 w/m2
17:00131 w/m2
18:0084 w/m2
19:0033 w/m2
Thursday, April 3
Total: 2474 wh/m2Hours08:0069 w/m2
09:00103 w/m2
10:00119 w/m2
11:00619 w/m2
12:00528 w/m2
13:00208 w/m2
14:00210 w/m2
15:00197 w/m2
16:00171 w/m2
17:00132 w/m2
18:0085 w/m2
19:0033 w/m2
Friday, April 4
Total: 1609 wh/m2Hours08:0021 w/m2
09:0071 w/m2
10:00120 w/m2
11:00162 w/m2
12:00192 w/m2
13:00209 w/m2
14:00211 w/m2
15:00198 w/m2
16:00172 w/m2
17:00133 w/m2
18:0086 w/m2
19:0034 w/m2
Saturday, April 5
Total: 2130 wh/m2Hours08:0055 w/m2
09:00138 w/m2
10:00134 w/m2
11:00180 w/m2
12:00193 w/m2
13:00210 w/m2
14:00212 w/m2
15:00219 w/m2
16:00190 w/m2
17:00265 w/m2
18:00225 w/m2
19:00109 w/m2
Sunday, April 6
Total: 6536 wh/m2Hours08:0092 w/m2
09:00296 w/m2
10:00492 w/m2
11:00657 w/m2
12:00777 w/m2
13:00844 w/m2
14:00851 w/m2
15:00800 w/m2
16:00693 w/m2
17:00539 w/m2
18:00350 w/m2
19:00144 w/m2
20:001 w/m2
Monday, April 7
Total: 4484 wh/m2Hours08:0055 w/m2
09:00155 w/m2
10:00237 w/m2
11:00507 w/m2
12:00718 w/m2
13:00833 w/m2
14:00776 w/m2
15:00587 w/m2
16:00273 w/m2
17:00188 w/m2
18:00114 w/m2
19:0041 w/m2
Tuesday, April 8
Total: 4876 wh/m2Hours08:0026 w/m2
09:0077 w/m2
10:00126 w/m2
11:00355 w/m2
12:00574 w/m2
13:00733 w/m2
14:00758 w/m2
15:00728 w/m2
16:00644 w/m2
17:00470 w/m2
18:00281 w/m2
19:00102 w/m2
20:002 w/m2
Wednesday, April 9
Total: 6690 wh/m2Hours08:00107 w/m2
09:00312 w/m2
10:00508 w/m2
11:00672 w/m2
12:00791 w/m2
13:00856 w/m2
14:00863 w/m2
15:00811 w/m2
16:00704 w/m2
17:00550 w/m2
18:00360 w/m2
19:00154 w/m2
20:002 w/m2
Thursday, April 10
Total: 6737 wh/m2Hours08:00112 w/m2
09:00317 w/m2
10:00513 w/m2
11:00676 w/m2
12:00795 w/m2
13:00860 w/m2
14:00866 w/m2
15:00814 w/m2
16:00707 w/m2
17:00553 w/m2
18:00363 w/m2
19:00158 w/m2
20:003 w/m2
Friday, April 11
Total: 5001 wh/m2Hours08:00117 w/m2
09:00323 w/m2
10:00517 w/m2
11:00671 w/m2
12:00738 w/m2
13:00661 w/m2
14:00577 w/m2
15:00436 w/m2
16:00263 w/m2
17:00306 w/m2
18:00259 w/m2
19:00130 w/m2
20:003 w/m2
Saturday, April 12
Total: 3293 wh/m2Hours08:0031 w/m2
09:0082 w/m2
10:00131 w/m2
11:00339 w/m2
12:00544 w/m2
13:00700 w/m2
14:00592 w/m2
15:00407 w/m2
16:00178 w/m2
17:00140 w/m2
18:00102 w/m2
19:0045 w/m2
20:002 w/m2
Sunday, April 13
Total: 1720 wh/m2Hours08:0032 w/m2
09:0083 w/m2
10:00132 w/m2
11:00172 w/m2
12:00202 w/m2
13:00218 w/m2
14:00219 w/m2
15:00206 w/m2
16:00179 w/m2
17:00141 w/m2
18:0093 w/m2
19:0042 w/m2
20:001 w/m2
Monday, April 14
Total: 2489 wh/m2Hours08:0033 w/m2
09:0084 w/m2
10:00133 w/m2
11:00173 w/m2
12:00223 w/m2
13:00241 w/m2
14:00285 w/m2
15:00287 w/m2
16:00282 w/m2
17:00331 w/m2
18:00271 w/m2
19:00140 w/m2
20:006 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.
