Solar radiation in Colombo 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, July 2
Total: 4093 wh/m2Hours08:00115 w/m2
09:00313 w/m2
10:00477 w/m2
11:00591 w/m2
12:00645 w/m2
13:00636 w/m2
14:00563 w/m2
15:00433 w/m2
16:00257 w/m2
17:0063 w/m2
Tomorrow, July 3
Total: 4095 wh/m2Hours08:00118 w/m2
09:00314 w/m2
10:00478 w/m2
11:00592 w/m2
12:00647 w/m2
13:00637 w/m2
14:00565 w/m2
15:00435 w/m2
16:00254 w/m2
17:0055 w/m2
Thursday, July 4
Total: 4096 wh/m2Hours08:00119 w/m2
09:00314 w/m2
10:00479 w/m2
11:00593 w/m2
12:00648 w/m2
13:00637 w/m2
14:00565 w/m2
15:00415 w/m2
16:00261 w/m2
17:0065 w/m2
Friday, July 5
Total: 3934 wh/m2Hours08:00119 w/m2
09:00312 w/m2
10:00397 w/m2
11:00593 w/m2
12:00650 w/m2
13:00641 w/m2
14:00567 w/m2
15:00363 w/m2
16:00232 w/m2
17:0060 w/m2
Saturday, July 6
Total: 2146 wh/m2Hours08:0033 w/m2
09:0079 w/m2
10:00156 w/m2
11:00234 w/m2
12:00297 w/m2
13:00376 w/m2
14:00395 w/m2
15:00342 w/m2
16:00190 w/m2
17:0044 w/m2
Sunday, July 7
Total: 2531 wh/m2Hours08:0050 w/m2
09:00157 w/m2
10:00220 w/m2
11:00248 w/m2
12:00242 w/m2
13:00437 w/m2
14:00488 w/m2
15:00421 w/m2
16:00225 w/m2
17:0043 w/m2
Monday, July 8
Total: 1047 wh/m2Hours08:0030 w/m2
09:0080 w/m2
10:00121 w/m2
11:00150 w/m2
12:00164 w/m2
13:00162 w/m2
14:00144 w/m2
15:00111 w/m2
16:0067 w/m2
17:0018 w/m2
Tuesday, July 9
Total: 3093 wh/m2Hours08:00105 w/m2
09:00308 w/m2
10:00453 w/m2
11:00539 w/m2
12:00555 w/m2
13:00466 w/m2
14:00318 w/m2
15:00134 w/m2
16:00158 w/m2
17:0057 w/m2
Wednesday, July 10
Total: 3083 wh/m2Hours08:0061 w/m2
09:00193 w/m2
10:00337 w/m2
11:00469 w/m2
12:00551 w/m2
13:00520 w/m2
14:00437 w/m2
15:00323 w/m2
16:00160 w/m2
17:0032 w/m2
Thursday, July 11
Total: 1059 wh/m2Hours08:0031 w/m2
09:0081 w/m2
10:00122 w/m2
11:00151 w/m2
12:00165 w/m2
13:00163 w/m2
14:00145 w/m2
15:00113 w/m2
16:0069 w/m2
17:0019 w/m2
Friday, July 12
Total: 1065 wh/m2Hours08:0031 w/m2
09:0081 w/m2
10:00123 w/m2
11:00152 w/m2
12:00166 w/m2
13:00164 w/m2
14:00146 w/m2
15:00114 w/m2
16:0069 w/m2
17:0019 w/m2
Saturday, July 13
Total: 1071 wh/m2Hours08:0032 w/m2
09:0081 w/m2
10:00123 w/m2
11:00152 w/m2
12:00167 w/m2
13:00165 w/m2
14:00147 w/m2
15:00114 w/m2
16:0070 w/m2
17:0020 w/m2
Sunday, July 14
Total: 1085 wh/m2Hours08:0032 w/m2
09:0082 w/m2
10:00124 w/m2
11:00153 w/m2
12:00167 w/m2
13:00165 w/m2
14:00147 w/m2
15:00115 w/m2
16:0078 w/m2
17:0022 w/m2
Monday, July 15
Total: 1180 wh/m2Hours08:0048 w/m2
09:0082 w/m2
10:00124 w/m2
11:00169 w/m2
12:00185 w/m2
13:00183 w/m2
14:00163 w/m2
15:00127 w/m2
16:0078 w/m2
17:0021 w/m2
Tuesday, July 16
Total: 2876 wh/m2Hours08:0080 w/m2
09:0083 w/m2
10:00217 w/m2
11:00351 w/m2
12:00466 w/m2
13:00511 w/m2
14:00492 w/m2
15:00407 w/m2
16:00219 w/m2
17:0050 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.
