Solar radiation in Tokyo 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 1
Total: 1672 wh/m2Hours06:0011 w/m2
07:0064 w/m2
08:00118 w/m2
09:00165 w/m2
10:00199 w/m2
11:00220 w/m2
12:00224 w/m2
13:00212 w/m2
14:00185 w/m2
15:00144 w/m2
16:0093 w/m2
17:0037 w/m2
Tomorrow, April 2
Total: 2550 wh/m2Hours06:0014 w/m2
07:0065 w/m2
08:00119 w/m2
09:00166 w/m2
10:00220 w/m2
11:00220 w/m2
12:00247 w/m2
13:00213 w/m2
14:00204 w/m2
15:00568 w/m2
16:00373 w/m2
17:00141 w/m2
Thursday, April 3
Total: 2813 wh/m2Hours06:0020 w/m2
07:0066 w/m2
08:00200 w/m2
09:00184 w/m2
10:00221 w/m2
11:00243 w/m2
12:00392 w/m2
13:00334 w/m2
14:00422 w/m2
15:00568 w/m2
16:00113 w/m2
17:0050 w/m2
Friday, April 4
Total: 6454 wh/m2Hours06:0055 w/m2
07:00270 w/m2
08:00487 w/m2
09:00671 w/m2
10:00808 w/m2
11:00888 w/m2
12:00904 w/m2
13:00853 w/m2
14:00714 w/m2
15:00487 w/m2
16:00234 w/m2
17:0083 w/m2
Saturday, April 5
Total: 3004 wh/m2Hours06:0053 w/m2
07:00236 w/m2
08:00397 w/m2
09:00501 w/m2
10:00502 w/m2
11:00406 w/m2
12:00227 w/m2
13:00214 w/m2
14:00187 w/m2
15:00146 w/m2
16:0095 w/m2
17:0040 w/m2
Sunday, April 6
Total: 6743 wh/m2Hours06:0016 w/m2
07:00214 w/m2
08:00474 w/m2
09:00678 w/m2
10:00815 w/m2
11:00894 w/m2
12:00909 w/m2
13:00860 w/m2
14:00750 w/m2
15:00587 w/m2
16:00384 w/m2
17:00161 w/m2
18:001 w/m2
Monday, April 7
Total: 5900 wh/m2Hours06:0017 w/m2
07:0098 w/m2
08:00207 w/m2
09:00338 w/m2
10:00704 w/m2
11:00881 w/m2
12:00911 w/m2
13:00862 w/m2
14:00750 w/m2
15:00583 w/m2
16:00385 w/m2
17:00163 w/m2
18:001 w/m2
Tuesday, April 8
Total: 6896 wh/m2Hours06:0048 w/m2
07:00264 w/m2
08:00499 w/m2
09:00686 w/m2
10:00821 w/m2
11:00899 w/m2
12:00914 w/m2
13:00864 w/m2
14:00754 w/m2
15:00591 w/m2
16:00388 w/m2
17:00166 w/m2
18:002 w/m2
Wednesday, April 9
Total: 2168 wh/m2Hours06:0071 w/m2
07:00249 w/m2
08:00321 w/m2
09:00172 w/m2
10:00206 w/m2
11:00225 w/m2
12:00229 w/m2
13:00217 w/m2
14:00189 w/m2
15:00148 w/m2
16:0098 w/m2
17:0042 w/m2
18:001 w/m2
Thursday, April 10
Total: 6106 wh/m2Hours06:0075 w/m2
07:00293 w/m2
08:00510 w/m2
09:00693 w/m2
10:00827 w/m2
11:00904 w/m2
12:00918 w/m2
13:00844 w/m2
14:00620 w/m2
15:00234 w/m2
16:00136 w/m2
17:0051 w/m2
18:001 w/m2
Friday, April 11
Total: 1764 wh/m2Hours06:0021 w/m2
07:0075 w/m2
08:00129 w/m2
09:00174 w/m2
10:00208 w/m2
11:00227 w/m2
12:00230 w/m2
13:00218 w/m2
14:00190 w/m2
15:00149 w/m2
16:0099 w/m2
17:0043 w/m2
18:001 w/m2
Saturday, April 12
Total: 4830 wh/m2Hours06:0086 w/m2
07:00305 w/m2
08:00519 w/m2
09:00697 w/m2
10:00789 w/m2
11:00676 w/m2
12:00231 w/m2
13:00323 w/m2
14:00347 w/m2
15:00330 w/m2
16:00350 w/m2
17:00173 w/m2
18:004 w/m2
Sunday, April 13
Total: 7119 wh/m2Hours06:0090 w/m2
07:00309 w/m2
08:00523 w/m2
09:00703 w/m2
10:00836 w/m2
11:00912 w/m2
12:00925 w/m2
13:00875 w/m2
14:00764 w/m2
15:00601 w/m2
16:00399 w/m2
17:00177 w/m2
18:005 w/m2
Monday, April 14
Total: 1787 wh/m2Hours06:0023 w/m2
07:0078 w/m2
08:00132 w/m2
09:00176 w/m2
10:00210 w/m2
11:00229 w/m2
12:00232 w/m2
13:00219 w/m2
14:00191 w/m2
15:00151 w/m2
16:00100 w/m2
17:0045 w/m2
18:001 w/m2
Tuesday, April 15
Total: 3445 wh/m2Hours06:0071 w/m2
07:00243 w/m2
08:00417 w/m2
09:00573 w/m2
10:00570 w/m2
11:00454 w/m2
12:00232 w/m2
13:00220 w/m2
14:00192 w/m2
15:00151 w/m2
16:00322 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.
