|
PUERTO
RICO / San Juan
Latitude (N): 18.43
Longitude
(W): 66.00
Elevation (feet): 62
Annual Precipitation (inches): 54
Annual heating degree days (base 65 deg. F): 0
APPROXIMATE
SUN ANGLE (at noon facing due south)
|
Mar
21
|
June
21
|
Sept
21
|
Dec
21
|
|
71 deg.
|
90 deg.
|
72 deg.
|
48 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
5.7 |
6.1 |
5.5 |
4.0 |
|
BTU/ft2
|
1,808 |
1,935 |
1,745 |
1,269 |
| On
vertical surface |
|
kWh/m2
|
3.1 |
1.5 |
2.5 |
4.1 |
|
BTU/ft2
|
983 |
476 |
793 |
1,301 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
72 |
76 |
76 |
72 |
| Daily
Max. - Degrees F |
84 |
89 |
89 |
84 |
| Wind
Speed - miles/hour |
8.9 |
8.5 |
7.2 |
7.8 |
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