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, April 21
Total: 4270 wh/m2Hours08:0017 w/m2
09:00178 w/m2
10:00345 w/m2
11:00405 w/m2
12:00527 w/m2
13:00683 w/m2
14:00694 w/m2
15:00611 w/m2
16:00465 w/m2
17:00276 w/m2
18:0069 w/m2
Tomorrow, April 22
Total: 4745 wh/m2Hours08:0029 w/m2
09:00225 w/m2
10:00423 w/m2
11:00581 w/m2
12:00683 w/m2
13:00723 w/m2
14:00697 w/m2
15:00588 w/m2
16:00460 w/m2
17:00271 w/m2
18:0065 w/m2
Wednesday, April 23
Total: 4709 wh/m2Hours08:0027 w/m2
09:00222 w/m2
10:00419 w/m2
11:00574 w/m2
12:00670 w/m2
13:00718 w/m2
14:00692 w/m2
15:00603 w/m2
16:00456 w/m2
17:00266 w/m2
18:0062 w/m2
Thursday, April 24
Total: 2654 wh/m2Hours08:0018 w/m2
09:0091 w/m2
10:00104 w/m2
11:00143 w/m2
12:00168 w/m2
13:00196 w/m2
14:00574 w/m2
15:00589 w/m2
16:00451 w/m2
17:00261 w/m2
18:0059 w/m2
Friday, April 25
Total: 4627 wh/m2Hours08:0024 w/m2
09:00216 w/m2
10:00411 w/m2
11:00567 w/m2
12:00669 w/m2
13:00708 w/m2
14:00682 w/m2
15:00592 w/m2
16:00446 w/m2
17:00257 w/m2
18:0055 w/m2
Saturday, April 26
Total: 2284 wh/m2Hours08:0023 w/m2
09:00212 w/m2
10:00400 w/m2
11:00455 w/m2
12:00166 w/m2
13:00176 w/m2
14:00169 w/m2
15:00147 w/m2
16:00273 w/m2
17:00213 w/m2
18:0050 w/m2
Sunday, April 27
Total: 4537 wh/m2Hours08:0021 w/m2
09:00209 w/m2
10:00403 w/m2
11:00559 w/m2
12:00659 w/m2
13:00698 w/m2
14:00672 w/m2
15:00582 w/m2
16:00437 w/m2
17:00248 w/m2
18:0049 w/m2
Monday, April 28
Total: 4493 wh/m2Hours08:0019 w/m2
09:00206 w/m2
10:00400 w/m2
11:00554 w/m2
12:00655 w/m2
13:00693 w/m2
14:00667 w/m2
15:00577 w/m2
16:00432 w/m2
17:00244 w/m2
18:0046 w/m2
Tuesday, April 29
Total: 4448 wh/m2Hours08:0018 w/m2
09:00203 w/m2
10:00396 w/m2
11:00550 w/m2
12:00650 w/m2
13:00688 w/m2
14:00662 w/m2
15:00572 w/m2
16:00427 w/m2
17:00239 w/m2
18:0043 w/m2
Wednesday, April 30
Total: 2055 wh/m2Hours08:0016 w/m2
09:00198 w/m2
10:00369 w/m2
11:00418 w/m2
12:00253 w/m2
13:00237 w/m2
14:00197 w/m2
15:00142 w/m2
16:00127 w/m2
17:0082 w/m2
18:0016 w/m2
Thursday, May 1
Total: 4362 wh/m2Hours08:0015 w/m2
09:00196 w/m2
10:00388 w/m2
11:00541 w/m2
12:00641 w/m2
13:00679 w/m2
14:00652 w/m2
15:00563 w/m2
16:00418 w/m2
17:00231 w/m2
18:0038 w/m2
Friday, May 2
Total: 4319 wh/m2Hours08:0014 w/m2
09:00193 w/m2
10:00384 w/m2
11:00537 w/m2
12:00636 w/m2
13:00674 w/m2
14:00647 w/m2
15:00558 w/m2
16:00413 w/m2
17:00227 w/m2
18:0036 w/m2
Saturday, May 3
Total: 2063 wh/m2Hours08:007 w/m2
09:0057 w/m2
10:00181 w/m2
11:00338 w/m2
12:00469 w/m2
13:00414 w/m2
14:00293 w/m2
15:00138 w/m2
16:00102 w/m2
17:0056 w/m2
18:008 w/m2
Sunday, May 4
Total: 2461 wh/m2Hours08:004 w/m2
09:0047 w/m2
10:00104 w/m2
11:00171 w/m2
12:00218 w/m2
13:00378 w/m2
14:00466 w/m2
15:00463 w/m2
16:00370 w/m2
17:00209 w/m2
18:0031 w/m2
Monday, May 5
Total: 1775 wh/m2Hours08:009 w/m2
09:00138 w/m2
10:00253 w/m2
11:00307 w/m2
12:00284 w/m2
13:00259 w/m2
14:00205 w/m2
15:00136 w/m2
16:00110 w/m2
17:0065 w/m2
18:009 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.
