Solar radiation in Santarém 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, December 19
Total: 2315 wh/m2Hours08:002 w/m2
09:0088 w/m2
10:00240 w/m2
11:00360 w/m2
12:00439 w/m2
13:00426 w/m2
14:00341 w/m2
15:00268 w/m2
16:00144 w/m2
17:007 w/m2
Tomorrow, December 20
Total: 2590 wh/m2Hours08:003 w/m2
09:00136 w/m2
10:00288 w/m2
11:00390 w/m2
12:00445 w/m2
13:00462 w/m2
14:00408 w/m2
15:00300 w/m2
16:00150 w/m2
17:008 w/m2
Saturday, December 21
Total: 2613 wh/m2Hours08:003 w/m2
09:00134 w/m2
10:00287 w/m2
11:00399 w/m2
12:00460 w/m2
13:00463 w/m2
14:00408 w/m2
15:00300 w/m2
16:00151 w/m2
17:008 w/m2
Sunday, December 22
Total: 2606 wh/m2Hours08:002 w/m2
09:00131 w/m2
10:00284 w/m2
11:00398 w/m2
12:00459 w/m2
13:00462 w/m2
14:00408 w/m2
15:00301 w/m2
16:00152 w/m2
17:009 w/m2
Monday, December 23
Total: 2602 wh/m2Hours08:002 w/m2
09:00129 w/m2
10:00283 w/m2
11:00397 w/m2
12:00458 w/m2
13:00462 w/m2
14:00408 w/m2
15:00301 w/m2
16:00153 w/m2
17:009 w/m2
Tuesday, December 24
Total: 2604 wh/m2Hours08:002 w/m2
09:00129 w/m2
10:00282 w/m2
11:00396 w/m2
12:00458 w/m2
13:00462 w/m2
14:00409 w/m2
15:00302 w/m2
16:00154 w/m2
17:0010 w/m2
Wednesday, December 25
Total: 2169 wh/m2Hours08:002 w/m2
09:00128 w/m2
10:00281 w/m2
11:00395 w/m2
12:00457 w/m2
13:00453 w/m2
14:00331 w/m2
15:0076 w/m2
16:0043 w/m2
17:003 w/m2
Thursday, December 26
Total: 778 wh/m2Hours08:001 w/m2
09:0035 w/m2
10:0077 w/m2
11:00109 w/m2
12:00137 w/m2
13:00139 w/m2
14:00123 w/m2
15:0091 w/m2
16:0061 w/m2
17:005 w/m2
Friday, December 27
Total: 2605 wh/m2Hours08:001 w/m2
09:00125 w/m2
10:00279 w/m2
11:00394 w/m2
12:00457 w/m2
13:00463 w/m2
14:00411 w/m2
15:00305 w/m2
16:00158 w/m2
17:0012 w/m2
Saturday, December 28
Total: 2607 wh/m2Hours08:001 w/m2
09:00124 w/m2
10:00278 w/m2
11:00393 w/m2
12:00457 w/m2
13:00463 w/m2
14:00412 w/m2
15:00307 w/m2
16:00159 w/m2
17:0013 w/m2
Sunday, December 29
Total: 2611 wh/m2Hours08:001 w/m2
09:00123 w/m2
10:00277 w/m2
11:00393 w/m2
12:00457 w/m2
13:00464 w/m2
14:00413 w/m2
15:00308 w/m2
16:00161 w/m2
17:0014 w/m2
Monday, December 30
Total: 1378 wh/m2Hours08:001 w/m2
09:00119 w/m2
10:00242 w/m2
11:00261 w/m2
12:00114 w/m2
13:00161 w/m2
14:00171 w/m2
15:00153 w/m2
16:00141 w/m2
17:0015 w/m2
Tuesday, December 31
Total: 2615 wh/m2Hours08:001 w/m2
09:00120 w/m2
10:00274 w/m2
11:00391 w/m2
12:00457 w/m2
13:00465 w/m2
14:00415 w/m2
15:00312 w/m2
16:00164 w/m2
17:0016 w/m2
Wednesday, January 1
Total: 954 wh/m2Hours08:001 w/m2
09:00100 w/m2
10:00191 w/m2
11:00202 w/m2
12:00115 w/m2
13:00117 w/m2
14:00104 w/m2
15:0078 w/m2
16:0042 w/m2
17:004 w/m2
Thursday, January 2
Total: 703 wh/m2Hours09:0036 w/m2
10:0076 w/m2
11:00108 w/m2
12:00115 w/m2
13:00117 w/m2
14:00105 w/m2
15:0079 w/m2
16:0059 w/m2
17:008 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.
