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, February 21
Total: 4602 wh/m2Hours07:0076 w/m2
08:00288 w/m2
09:00479 w/m2
10:00626 w/m2
11:00717 w/m2
12:00744 w/m2
13:00692 w/m2
14:00426 w/m2
15:00358 w/m2
16:00176 w/m2
17:0020 w/m2
Tomorrow, February 22
Total: 2107 wh/m2Hours07:0029 w/m2
08:0088 w/m2
09:00133 w/m2
10:00204 w/m2
11:00299 w/m2
12:00310 w/m2
13:00278 w/m2
14:00252 w/m2
15:00215 w/m2
16:00253 w/m2
17:0046 w/m2
Sunday, February 23
Total: 4063 wh/m2Hours07:0084 w/m2
08:00297 w/m2
09:00488 w/m2
10:00621 w/m2
11:00715 w/m2
12:00585 w/m2
13:00547 w/m2
14:00397 w/m2
15:00198 w/m2
16:00117 w/m2
17:0014 w/m2
Monday, February 24
Total: 4922 wh/m2Hours07:0088 w/m2
08:00301 w/m2
09:00493 w/m2
10:00640 w/m2
11:00719 w/m2
12:00722 w/m2
13:00643 w/m2
14:00586 w/m2
15:00420 w/m2
16:00259 w/m2
17:0051 w/m2
Tuesday, February 25
Total: 5162 wh/m2Hours07:0092 w/m2
08:00306 w/m2
09:00498 w/m2
10:00645 w/m2
11:00735 w/m2
12:00762 w/m2
13:00722 w/m2
14:00621 w/m2
15:00463 w/m2
16:00264 w/m2
17:0054 w/m2
Wednesday, February 26
Total: 5208 wh/m2Hours07:0096 w/m2
08:00311 w/m2
09:00502 w/m2
10:00650 w/m2
11:00740 w/m2
12:00766 w/m2
13:00727 w/m2
14:00625 w/m2
15:00467 w/m2
16:00268 w/m2
17:0056 w/m2
Thursday, February 27
Total: 5131 wh/m2Hours07:00100 w/m2
08:00303 w/m2
09:00428 w/m2
10:00629 w/m2
11:00741 w/m2
12:00770 w/m2
13:00731 w/m2
14:00628 w/m2
15:00471 w/m2
16:00271 w/m2
17:0059 w/m2
Friday, February 28
Total: 5160 wh/m2Hours07:0081 w/m2
08:00300 w/m2
09:00508 w/m2
10:00658 w/m2
11:00749 w/m2
12:00775 w/m2
13:00734 w/m2
14:00623 w/m2
15:00443 w/m2
16:00240 w/m2
17:0049 w/m2
Saturday, March 1
Total: 5326 wh/m2Hours07:00109 w/m2
08:00325 w/m2
09:00517 w/m2
10:00664 w/m2
11:00753 w/m2
12:00779 w/m2
13:00739 w/m2
14:00636 w/m2
15:00478 w/m2
16:00272 w/m2
17:0054 w/m2
Sunday, March 2
Total: 3023 wh/m2Hours07:00105 w/m2
08:00245 w/m2
09:00181 w/m2
10:00356 w/m2
11:00514 w/m2
12:00617 w/m2
13:00493 w/m2
14:00305 w/m2
15:00120 w/m2
16:0070 w/m2
17:0017 w/m2
Monday, March 3
Total: 1713 wh/m2Hours07:00113 w/m2
08:00264 w/m2
09:00170 w/m2
10:00202 w/m2
11:00210 w/m2
12:00197 w/m2
13:00187 w/m2
14:00161 w/m2
15:00121 w/m2
16:0071 w/m2
17:0017 w/m2
Tuesday, March 4
Total: 2354 wh/m2Hours07:0089 w/m2
08:00187 w/m2
09:00146 w/m2
10:00187 w/m2
11:00211 w/m2
12:00218 w/m2
13:00342 w/m2
14:00400 w/m2
15:00363 w/m2
16:00178 w/m2
17:0033 w/m2
Wednesday, March 5
Total: 1902 wh/m2Hours07:0032 w/m2
08:0086 w/m2
09:00134 w/m2
10:00171 w/m2
11:00193 w/m2
12:00219 w/m2
13:00262 w/m2
14:00283 w/m2
15:00244 w/m2
16:00213 w/m2
17:0065 w/m2
Thursday, March 6
Total: 1505 wh/m2Hours07:0033 w/m2
08:0087 w/m2
09:00135 w/m2
10:00189 w/m2
11:00214 w/m2
12:00240 w/m2
13:00209 w/m2
14:00180 w/m2
15:00124 w/m2
16:0074 w/m2
17:0020 w/m2
Friday, March 7
Total: 2382 wh/m2Hours07:00134 w/m2
08:00296 w/m2
09:00189 w/m2
10:00256 w/m2
11:00306 w/m2
12:00350 w/m2
13:00316 w/m2
14:00244 w/m2
15:00173 w/m2
16:0096 w/m2
17:0022 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.
