Solar radiation in San Francisco 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: 4303 wh/m2Hours07:0072 w/m2
08:00297 w/m2
09:00454 w/m2
10:00595 w/m2
11:00667 w/m2
12:00628 w/m2
13:00560 w/m2
14:00434 w/m2
15:00358 w/m2
16:00204 w/m2
17:0034 w/m2
Tomorrow, December 20
Total: 2936 wh/m2Hours07:0067 w/m2
08:00247 w/m2
09:00423 w/m2
10:00462 w/m2
11:00487 w/m2
12:00364 w/m2
13:00344 w/m2
14:00177 w/m2
15:00152 w/m2
16:00187 w/m2
17:0026 w/m2
Saturday, December 21
Total: 2712 wh/m2Hours07:0029 w/m2
08:00122 w/m2
09:00260 w/m2
10:00356 w/m2
11:00498 w/m2
12:00425 w/m2
13:00344 w/m2
14:00280 w/m2
15:00276 w/m2
16:00105 w/m2
17:0017 w/m2
Sunday, December 22
Total: 2141 wh/m2Hours07:0039 w/m2
08:00121 w/m2
09:00268 w/m2
10:00331 w/m2
11:00230 w/m2
12:00200 w/m2
13:00245 w/m2
14:00294 w/m2
15:00252 w/m2
16:00142 w/m2
17:0019 w/m2
Monday, December 23
Total: 2033 wh/m2Hours07:0017 w/m2
08:0073 w/m2
09:00186 w/m2
10:00304 w/m2
11:00423 w/m2
12:00364 w/m2
13:00281 w/m2
14:00162 w/m2
15:00131 w/m2
16:0078 w/m2
17:0014 w/m2
Tuesday, December 24
Total: 1412 wh/m2Hours07:0017 w/m2
08:0073 w/m2
09:00125 w/m2
10:00167 w/m2
11:00192 w/m2
12:00200 w/m2
13:00190 w/m2
14:00179 w/m2
15:00155 w/m2
16:0097 w/m2
17:0017 w/m2
Wednesday, December 25
Total: 1322 wh/m2Hours07:0016 w/m2
08:0072 w/m2
09:00125 w/m2
10:00167 w/m2
11:00192 w/m2
12:00200 w/m2
13:00190 w/m2
14:00163 w/m2
15:00120 w/m2
16:0066 w/m2
17:0011 w/m2
Thursday, December 26
Total: 1835 wh/m2Hours07:0016 w/m2
08:0072 w/m2
09:00125 w/m2
10:00167 w/m2
11:00192 w/m2
12:00279 w/m2
13:00332 w/m2
14:00336 w/m2
15:00210 w/m2
16:0093 w/m2
17:0013 w/m2
Friday, December 27
Total: 1809 wh/m2Hours07:0016 w/m2
08:0072 w/m2
09:00125 w/m2
10:00166 w/m2
11:00193 w/m2
12:00221 w/m2
13:00229 w/m2
14:00197 w/m2
15:00315 w/m2
16:00228 w/m2
17:0047 w/m2
Saturday, December 28
Total: 4868 wh/m2Hours07:0017 w/m2
08:0079 w/m2
09:00371 w/m2
10:00630 w/m2
11:00768 w/m2
12:00804 w/m2
13:00766 w/m2
14:00658 w/m2
15:00482 w/m2
16:00253 w/m2
17:0040 w/m2
Sunday, December 29
Total: 5166 wh/m2Hours07:0061 w/m2
08:00285 w/m2
09:00498 w/m2
10:00664 w/m2
11:00765 w/m2
12:00786 w/m2
13:00724 w/m2
14:00583 w/m2
15:00473 w/m2
16:00274 w/m2
17:0053 w/m2
Monday, December 30
Total: 4831 wh/m2Hours07:0059 w/m2
08:00284 w/m2
09:00491 w/m2
10:00605 w/m2
11:00544 w/m2
12:00682 w/m2
13:00716 w/m2
14:00644 w/m2
15:00481 w/m2
16:00271 w/m2
17:0054 w/m2
Tuesday, December 31
Total: 4918 wh/m2Hours07:0059 w/m2
08:00283 w/m2
09:00498 w/m2
10:00665 w/m2
11:00768 w/m2
12:00789 w/m2
13:00721 w/m2
14:00567 w/m2
15:00375 w/m2
16:00169 w/m2
17:0024 w/m2
Wednesday, January 1
Total: 4121 wh/m2Hours07:0057 w/m2
08:00282 w/m2
09:00495 w/m2
10:00645 w/m2
11:00688 w/m2
12:00663 w/m2
13:00546 w/m2
14:00380 w/m2
15:00238 w/m2
16:00111 w/m2
17:0016 w/m2
Thursday, January 2
Total: 4789 wh/m2Hours07:0022 w/m2
08:00134 w/m2
09:00420 w/m2
10:00652 w/m2
11:00775 w/m2
12:00806 w/m2
13:00744 w/m2
14:00582 w/m2
15:00406 w/m2
16:00210 w/m2
17:0038 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.
