Solar radiation in Grignon 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, December 18
Total: 761 wh/m2Hours09:0041 w/m2
10:0095 w/m2
11:00179 w/m2
12:00106 w/m2
13:00129 w/m2
14:0097 w/m2
15:0068 w/m2
16:0046 w/m2
Tomorrow, December 19
Total: 442 wh/m2Hours09:0014 w/m2
10:0044 w/m2
11:0069 w/m2
12:0082 w/m2
13:0082 w/m2
14:0090 w/m2
15:0046 w/m2
16:0015 w/m2
Friday, December 20
Total: 1269 wh/m2Hours09:0050 w/m2
10:00165 w/m2
11:00229 w/m2
12:00226 w/m2
13:00244 w/m2
14:00185 w/m2
15:00123 w/m2
16:0047 w/m2
Saturday, December 21
Total: 972 wh/m2Hours09:0026 w/m2
10:0099 w/m2
11:00119 w/m2
12:00113 w/m2
13:00240 w/m2
14:00201 w/m2
15:00131 w/m2
16:0043 w/m2
Sunday, December 22
Total: 420 wh/m2Hours09:0013 w/m2
10:0043 w/m2
11:0068 w/m2
12:0081 w/m2
13:0082 w/m2
14:0070 w/m2
15:0047 w/m2
16:0016 w/m2
Monday, December 23
Total: 580 wh/m2Hours09:0014 w/m2
10:0043 w/m2
11:0068 w/m2
12:0081 w/m2
13:0082 w/m2
14:00128 w/m2
15:00116 w/m2
16:0048 w/m2
Tuesday, December 24
Total: 794 wh/m2Hours09:0035 w/m2
10:00126 w/m2
11:00172 w/m2
12:00167 w/m2
13:00122 w/m2
14:0098 w/m2
15:0056 w/m2
16:0018 w/m2
Wednesday, December 25
Total: 862 wh/m2Hours09:0045 w/m2
10:00160 w/m2
11:00221 w/m2
12:00196 w/m2
13:0082 w/m2
14:0078 w/m2
15:0057 w/m2
16:0023 w/m2
Thursday, December 26
Total: 1157 wh/m2Hours09:0048 w/m2
10:00171 w/m2
11:00265 w/m2
12:00275 w/m2
13:00137 w/m2
14:00129 w/m2
15:0095 w/m2
16:0037 w/m2
Friday, December 27
Total: 1377 wh/m2Hours09:0047 w/m2
10:00170 w/m2
11:00268 w/m2
12:00297 w/m2
13:00219 w/m2
14:00193 w/m2
15:00133 w/m2
16:0050 w/m2
Saturday, December 28
Total: 1535 wh/m2Hours09:0047 w/m2
10:00170 w/m2
11:00269 w/m2
12:00311 w/m2
13:00268 w/m2
14:00239 w/m2
15:00167 w/m2
16:0064 w/m2
Sunday, December 29
Total: 1646 wh/m2Hours09:0046 w/m2
10:00170 w/m2
11:00270 w/m2
12:00321 w/m2
13:00310 w/m2
14:00271 w/m2
15:00187 w/m2
16:0071 w/m2
Monday, December 30
Total: 1658 wh/m2Hours09:0046 w/m2
10:00170 w/m2
11:00270 w/m2
12:00322 w/m2
13:00315 w/m2
14:00274 w/m2
15:00189 w/m2
16:0072 w/m2
Tuesday, December 31
Total: 1654 wh/m2Hours09:0045 w/m2
10:00169 w/m2
11:00269 w/m2
12:00324 w/m2
13:00329 w/m2
14:00277 w/m2
15:00179 w/m2
16:0062 w/m2
Wednesday, January 1
Total: 1723 wh/m2Hours09:0046 w/m2
10:00170 w/m2
11:00271 w/m2
12:00329 w/m2
13:00336 w/m2
14:00291 w/m2
15:00201 w/m2
16:0079 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.
