Solar radiation in Heathrow 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, November 21
Total: 4006 wh/m2Hours08:00135 w/m2
09:00330 w/m2
10:00492 w/m2
11:00601 w/m2
12:00647 w/m2
13:00626 w/m2
14:00540 w/m2
15:00397 w/m2
16:00211 w/m2
17:0027 w/m2
Tomorrow, November 22
Total: 3982 wh/m2Hours08:00132 w/m2
09:00327 w/m2
10:00489 w/m2
11:00598 w/m2
12:00644 w/m2
13:00624 w/m2
14:00538 w/m2
15:00395 w/m2
16:00209 w/m2
17:0026 w/m2
Saturday, November 23
Total: 3960 wh/m2Hours08:00129 w/m2
09:00324 w/m2
10:00486 w/m2
11:00595 w/m2
12:00641 w/m2
13:00621 w/m2
14:00536 w/m2
15:00394 w/m2
16:00208 w/m2
17:0026 w/m2
Sunday, November 24
Total: 3939 wh/m2Hours08:00127 w/m2
09:00321 w/m2
10:00483 w/m2
11:00592 w/m2
12:00639 w/m2
13:00619 w/m2
14:00534 w/m2
15:00392 w/m2
16:00207 w/m2
17:0025 w/m2
Monday, November 25
Total: 3918 wh/m2Hours08:00124 w/m2
09:00317 w/m2
10:00480 w/m2
11:00589 w/m2
12:00636 w/m2
13:00617 w/m2
14:00533 w/m2
15:00391 w/m2
16:00206 w/m2
17:0025 w/m2
Tuesday, November 26
Total: 3900 wh/m2Hours08:00121 w/m2
09:00315 w/m2
10:00477 w/m2
11:00586 w/m2
12:00634 w/m2
13:00615 w/m2
14:00531 w/m2
15:00390 w/m2
16:00206 w/m2
17:0025 w/m2
Wednesday, November 27
Total: 3873 wh/m2Hours08:00118 w/m2
09:00311 w/m2
10:00473 w/m2
11:00583 w/m2
12:00631 w/m2
13:00612 w/m2
14:00529 w/m2
15:00388 w/m2
16:00204 w/m2
17:0024 w/m2
Thursday, November 28
Total: 3771 wh/m2Hours08:00116 w/m2
09:00309 w/m2
10:00471 w/m2
11:00580 w/m2
12:00624 w/m2
13:00592 w/m2
14:00506 w/m2
15:00365 w/m2
16:00188 w/m2
17:0020 w/m2
Friday, November 29
Total: 3844 wh/m2Hours08:00113 w/m2
09:00306 w/m2
10:00468 w/m2
11:00579 w/m2
12:00627 w/m2
13:00609 w/m2
14:00527 w/m2
15:00387 w/m2
16:00204 w/m2
17:0024 w/m2
Saturday, November 30
Total: 3828 wh/m2Hours08:00111 w/m2
09:00303 w/m2
10:00466 w/m2
11:00576 w/m2
12:00625 w/m2
13:00608 w/m2
14:00526 w/m2
15:00386 w/m2
16:00203 w/m2
17:0024 w/m2
Sunday, December 1
Total: 3663 wh/m2Hours08:00108 w/m2
09:00300 w/m2
10:00463 w/m2
11:00574 w/m2
12:00622 w/m2
13:00601 w/m2
14:00502 w/m2
15:00334 w/m2
16:00141 w/m2
17:0018 w/m2
Monday, December 2
Total: 3791 wh/m2Hours08:00102 w/m2
09:00295 w/m2
10:00460 w/m2
11:00572 w/m2
12:00621 w/m2
13:00605 w/m2
14:00524 w/m2
15:00385 w/m2
16:00203 w/m2
17:0024 w/m2
Tuesday, December 3
Total: 3781 wh/m2Hours08:00103 w/m2
09:00295 w/m2
10:00458 w/m2
11:00569 w/m2
12:00619 w/m2
13:00603 w/m2
14:00523 w/m2
15:00384 w/m2
16:00203 w/m2
17:0024 w/m2
Wednesday, December 4
Total: 3768 wh/m2Hours08:00101 w/m2
09:00292 w/m2
10:00456 w/m2
11:00567 w/m2
12:00618 w/m2
13:00602 w/m2
14:00522 w/m2
15:00384 w/m2
16:00202 w/m2
17:0024 w/m2
Thursday, December 5
Total: 1622 wh/m2Hours08:0049 w/m2
09:00179 w/m2
10:00325 w/m2
11:00340 w/m2
12:00281 w/m2
13:00165 w/m2
14:00130 w/m2
15:0096 w/m2
16:0051 w/m2
17:006 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.
