|
HAWAII
/ Hilo
Latitude (N): 19.72
Longitude
(W): 155.07
Elevation (feet): 36
Annual Precipitation (inches): 128
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
|
|
70 deg.
|
90 deg.
|
70 deg.
|
48 deg.
|
AVERAGE DAILY SOLAR RADIATION
| |
March
|
June
|
September
|
December
|
| On
horizontal surface |
|
kWh/m2
|
4.6 |
5.4 |
5.0 |
3.5 |
|
BTU/ft2
|
1,459 |
1,713 |
1,586 |
1,110 |
| On
vertical surface |
|
kWh/m2
|
2.6 |
1.4 |
2.3 |
3.7 |
|
BTU/ft2
|
824 |
444 |
730 |
1,174 |
AVERAGE TEMPERATURE
AND WIND SPEED
| |
March
|
June
|
September
|
December
|
| Daily
Min. - Degrees F |
64 |
68 |
69 |
65 |
| Daily
Max. - Degrees F |
80 |
83 |
84 |
80 |
| Wind
Speed - miles/hour |
8.1 |
7.6 |
7.2 |
7.6 |
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