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 18
Total: 6893 wh/m2Hours07:0023 w/m2
08:00165 w/m2
09:00356 w/m2
10:00556 w/m2
11:00768 w/m2
12:00873 w/m2
13:00913 w/m2
14:00892 w/m2
15:00810 w/m2
16:00675 w/m2
17:00495 w/m2
18:00287 w/m2
19:0080 w/m2
Tomorrow, April 19
Total: 7145 wh/m2Hours07:0033 w/m2
08:00225 w/m2
09:00438 w/m2
10:00628 w/m2
11:00778 w/m2
12:00876 w/m2
13:00915 w/m2
14:00894 w/m2
15:00812 w/m2
16:00677 w/m2
17:00497 w/m2
18:00290 w/m2
19:0082 w/m2
Sunday, April 20
Total: 7126 wh/m2Hours07:0033 w/m2
08:00211 w/m2
09:00425 w/m2
10:00622 w/m2
11:00777 w/m2
12:00877 w/m2
13:00917 w/m2
14:00896 w/m2
15:00814 w/m2
16:00679 w/m2
17:00499 w/m2
18:00292 w/m2
19:0084 w/m2
Monday, April 21
Total: 7218 wh/m2Hours07:0039 w/m2
08:00234 w/m2
09:00446 w/m2
10:00635 w/m2
11:00784 w/m2
12:00881 w/m2
13:00920 w/m2
14:00898 w/m2
15:00816 w/m2
16:00681 w/m2
17:00502 w/m2
18:00295 w/m2
19:0087 w/m2
Tuesday, April 22
Total: 7244 wh/m2Hours07:0042 w/m2
08:00238 w/m2
09:00449 w/m2
10:00637 w/m2
11:00785 w/m2
12:00882 w/m2
13:00921 w/m2
14:00899 w/m2
15:00818 w/m2
16:00683 w/m2
17:00504 w/m2
18:00297 w/m2
19:0089 w/m2
Wednesday, April 23
Total: 7212 wh/m2Hours07:0044 w/m2
08:00239 w/m2
09:00447 w/m2
10:00634 w/m2
11:00782 w/m2
12:00878 w/m2
13:00916 w/m2
14:00894 w/m2
15:00813 w/m2
16:00678 w/m2
17:00501 w/m2
18:00296 w/m2
19:0090 w/m2
Thursday, April 24
Total: 6847 wh/m2Hours07:0045 w/m2
08:00230 w/m2
09:00426 w/m2
10:00598 w/m2
11:00735 w/m2
12:00825 w/m2
13:00865 w/m2
14:00848 w/m2
15:00775 w/m2
16:00650 w/m2
17:00483 w/m2
18:00282 w/m2
19:0085 w/m2
Friday, April 25
Total: 6822 wh/m2Hours07:0044 w/m2
08:00215 w/m2
09:00403 w/m2
10:00575 w/m2
11:00716 w/m2
12:00822 w/m2
13:00871 w/m2
14:00861 w/m2
15:00783 w/m2
16:00657 w/m2
17:00487 w/m2
18:00294 w/m2
19:0094 w/m2
Saturday, April 26
Total: 7332 wh/m2Hours07:0053 w/m2
08:00249 w/m2
09:00457 w/m2
10:00643 w/m2
11:00789 w/m2
12:00885 w/m2
13:00925 w/m2
14:00903 w/m2
15:00823 w/m2
16:00689 w/m2
17:00511 w/m2
18:00306 w/m2
19:0099 w/m2
Sunday, April 27
Total: 7398 wh/m2Hours07:0056 w/m2
08:00255 w/m2
09:00464 w/m2
10:00650 w/m2
11:00798 w/m2
12:00893 w/m2
13:00931 w/m2
14:00908 w/m2
15:00827 w/m2
16:00692 w/m2
17:00514 w/m2
18:00309 w/m2
19:00101 w/m2
Monday, April 28
Total: 7402 wh/m2Hours07:0059 w/m2
08:00257 w/m2
09:00465 w/m2
10:00651 w/m2
11:00798 w/m2
12:00892 w/m2
13:00929 w/m2
14:00907 w/m2
15:00825 w/m2
16:00691 w/m2
17:00515 w/m2
18:00310 w/m2
19:00103 w/m2
Tuesday, April 29
Total: 7470 wh/m2Hours07:0063 w/m2
08:00264 w/m2
09:00473 w/m2
10:00658 w/m2
11:00803 w/m2
12:00898 w/m2
13:00935 w/m2
14:00912 w/m2
15:00830 w/m2
16:00696 w/m2
17:00518 w/m2
18:00314 w/m2
19:00106 w/m2
Wednesday, April 30
Total: 7493 wh/m2Hours07:0065 w/m2
08:00265 w/m2
09:00474 w/m2
10:00660 w/m2
11:00805 w/m2
12:00900 w/m2
13:00937 w/m2
14:00913 w/m2
15:00832 w/m2
16:00698 w/m2
17:00520 w/m2
18:00316 w/m2
19:00108 w/m2
Thursday, May 1
Total: 7488 wh/m2Hours07:0069 w/m2
08:00270 w/m2
09:00478 w/m2
10:00663 w/m2
11:00807 w/m2
12:00902 w/m2
13:00938 w/m2
14:00915 w/m2
15:00832 w/m2
16:00692 w/m2
17:00502 w/m2
18:00311 w/m2
19:00109 w/m2
Friday, May 2
Total: 7422 wh/m2Hours07:0071 w/m2
08:00273 w/m2
09:00481 w/m2
10:00665 w/m2
11:00809 w/m2
12:00903 w/m2
13:00939 w/m2
14:00914 w/m2
15:00828 w/m2
16:00686 w/m2
17:00502 w/m2
18:00276 w/m2
19:0075 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.
