Solar radiation in Brest 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 19
Total: 165 wh/m2Hours09:001 w/m2
10:0016 w/m2
11:0032 w/m2
12:0040 w/m2
13:0038 w/m2
14:0027 w/m2
15:0011 w/m2
Tomorrow, December 20
Total: 397 wh/m2Hours09:003 w/m2
10:0060 w/m2
11:0097 w/m2
12:00130 w/m2
13:0046 w/m2
14:0047 w/m2
15:0014 w/m2
Saturday, December 21
Total: 177 wh/m2Hours09:001 w/m2
10:0017 w/m2
11:0032 w/m2
12:0044 w/m2
13:0046 w/m2
14:0027 w/m2
15:0010 w/m2
Sunday, December 22
Total: 164 wh/m2Hours09:001 w/m2
10:0015 w/m2
11:0032 w/m2
12:0040 w/m2
13:0038 w/m2
14:0027 w/m2
15:0011 w/m2
Monday, December 23
Total: 368 wh/m2Hours09:001 w/m2
10:0027 w/m2
11:0065 w/m2
12:0093 w/m2
13:0098 w/m2
14:0063 w/m2
15:0021 w/m2
Tuesday, December 24
Total: 616 wh/m2Hours09:003 w/m2
10:0056 w/m2
11:00116 w/m2
12:00148 w/m2
13:00143 w/m2
14:00108 w/m2
15:0042 w/m2
Wednesday, December 25
Total: 333 wh/m2Hours09:001 w/m2
10:0017 w/m2
11:0047 w/m2
12:0076 w/m2
13:0088 w/m2
14:0073 w/m2
15:0031 w/m2
Thursday, December 26
Total: 196 wh/m2Hours09:001 w/m2
10:0015 w/m2
11:0032 w/m2
12:0040 w/m2
13:0039 w/m2
14:0045 w/m2
15:0024 w/m2
Friday, December 27
Total: 672 wh/m2Hours09:003 w/m2
10:0061 w/m2
11:00127 w/m2
12:00162 w/m2
13:00158 w/m2
14:00115 w/m2
15:0046 w/m2
Saturday, December 28
Total: 676 wh/m2Hours09:003 w/m2
10:0061 w/m2
11:00127 w/m2
12:00163 w/m2
13:00159 w/m2
14:00116 w/m2
15:0047 w/m2
Sunday, December 29
Total: 685 wh/m2Hours09:003 w/m2
10:0062 w/m2
11:00128 w/m2
12:00164 w/m2
13:00160 w/m2
14:00118 w/m2
15:0049 w/m2
16:001 w/m2
Monday, December 30
Total: 177 wh/m2Hours09:001 w/m2
10:0017 w/m2
11:0035 w/m2
12:0041 w/m2
13:0040 w/m2
14:0030 w/m2
15:0013 w/m2
Tuesday, December 31
Total: 175 wh/m2Hours09:001 w/m2
10:0016 w/m2
11:0032 w/m2
12:0042 w/m2
13:0041 w/m2
14:0030 w/m2
15:0013 w/m2
Wednesday, January 1
Total: 198 wh/m2Hours09:003 w/m2
10:0022 w/m2
11:0042 w/m2
12:0046 w/m2
13:0041 w/m2
14:0031 w/m2
15:0013 w/m2
Thursday, January 2
Total: 179 wh/m2Hours09:001 w/m2
10:0016 w/m2
11:0033 w/m2
12:0042 w/m2
13:0042 w/m2
14:0031 w/m2
15:0014 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.
