HONOLULU/OAHU HI Latitude = 21.35 N WMO No. 91182 Longitude =157.9 W Elevation = 16 feet Period of Record = 1967 to 1996 Average Pressure = 29.96 inches Hg Design Criteria Data Mean Coincident (Average) Values Design Wet Bulb Humidity Wind Prevailing Value Temperature Ratio Speed Direction Dry Bulb Temperature (T) ( o F) ( o F) (gr/lb) (mph) (NSEW) Median of Extreme Highs 91 74 11 14.8 ENE.4% Occurrence 9 74 1 15.2 ENE 1.% Occurrence 89 74 99 15.3 ENE 2.% Occurrence 88 73 98 15.4 ENE Mean Daily Range 13 - - - - 97.5% Occurrence 65 62 78 5.2 NW 99.% Occurrence 63 6 74 4.9 NW 99.6% Occurrence 61 59 69 4.8 NW Median of Extreme Lows 57 55 62 5. NW Mean Coincident (Average) Values Design Dry Bulb Humidity Wind Prevailing Value Temperature Ratio Speed Direction Wet Bulb Temperature (T wb ) ( o F) ( o F) (gr/lb) (mph) (NSEW) Median of Extreme Highs 79 86 133 11. SE.4% Occurrence 77 85 123 11.5 ENE 1.% Occurrence 76 84 118 11.6 ENE 2.% Occurrence 75 84 113 12. ENE Mean Coincident (Average) Values Design Dry Bulb Vapor Wind Prevailing Value Temperature Pressure Speed Direction Humidity Ratio (HR) (gr/lb) ( o F) (in. Hg) (mph) (NSEW) Median of Extreme Highs 141 82.94 8.9 SSE.4% Occurrence 127 81.85 9.2 ENE 1.% Occurrence 123 8.82 9.2 ENE 2.% Occurrence 118 8.79 9.4 ENE Air Conditioning/ T > 93 o F T > 8 o F T wb > 73 o F T wb > 67 o F Humid Area Criteria # of Hours 2574 179 6722 Other Site Data Rain Rate Basic Wind Speed Ventilation Cooling Load Index Weather 1 Year Recurrence 3 sec gust @ 33 ft (Ton-hr/cfm/yr) Base 75 o F-RH 6% Region (in./hr) 5 Year Recurrence (mph) Latent + Sensible 1 2.5 15 7.4 + 2.5 Ground Water Frost Depth Ground Snow Load Average Annual Temperature ( o F) 5 Year Recurrence 5 Year Recurrence Freeze-Thaw Cycles 5 Foot Depth * (in.) (lb/ft 2 ) (#) 79.1 *Note: Temperatures at greater depths can be estimated by adding 1.5 o F per 1 feet additional depth.
Average Annual Climate Temperature ( o F) 12 11 1 9 8 7 6 5 4 3 2 1-1 -2-3 J F M A M J J A S O N D Mean Precipitation Mean Temperature Mean Dewpoint 15 14 13 12 11 1 9 8 7 6 5 4 3 2 1 Precipitation (Inches)
Long Term Psychrometric Summary -6-5 -4-3 -2-1 1 2 3 4 5 6 7 8 9 1 11 12 18 17 16 15 14 13 12 11 1 9 8 7 6 5 4 3 2 1 Humidity Ratio (gr/lb) Temperature ( o F) 5% of all observations 8% of all observations 95% of all observations 97.5% of all observations 99% of all observations
Psychrometric Summary of Peak Design Values 18 16-6 -5-4 -3-2 -1 1 2 3 4 5 6 7 8 9 1 11 12 14 12 1 8 6 4 2 Humidity Ratio (gr/lb) Temperature ( o F) MCHR Enthalpy MCDB MCWB MC Dewpt Enthalpy ( o F) (gr/lb) (btu/lb) 1.% Humidity (gr/lb) ( o F) ( o F) ( o F) (btu/lb) 99% Dry Bulb 63 73.2 26.5 Ratio 123.2 8.1 75.1 73.1 38.5 MCHR MCWB Enthalpy ( o F) (gr/lb) ( o F) (btu/lb) 1.% Dry Bulb 89 99.5 73.7 37.
Dry-Bulb Temperature Hours For An Average Year (Sheet 1 of 5) Period of Record = 1967 to 1996 January February March Hour M Hour M Hour M Group (LST) C Group (LST) C Group (LST) C Temperature 1 9 17 W 1 9 17 W 1 9 17 W Range To To To Total B To To To Total B To To To Total B ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 9 / 94 85 / 89 1 1 72.1 1 1 73. 5 5 7.4 8 / 84 67 3 7 7.2 63 4 67 69.9 96 7 13 69.3 75 / 79 14 126 63 23 68.7 7 115 53 175 68. 8 117 65 19 67.7 7 / 74 88 46 125 259 66.3 87 4 121 248 66. 14 29 147 315 65.8 65 / 69 93 8 49 15 63.5 88 5 4 134 63.2 8 2 27 19 63.5 6 / 64 48 8 56 6.1 35 6 41 59.5 19 2 21 59.6 55 / 59 6 6 55.9 6 6 55.6 1 1 55.6 5 / 54 53. Caution: This summary reflects the typical distribution of temperature in a typical year. It does not reflect the typical moisture distribution. Because wet bulb temperatures are averaged, this summary understates the annual moisture load. For accurate moisture load data, see the long-term humidity summary and the ventilation and infiltration load pages in this manual.
Dry-Bulb Temperature Hours For An Average Year (Sheet 2 of 5) Period of Record = 1967 to 1996 April May June Hour M Hour M Hour M Group (LST) C Group (LST) C Group (LST) C Temperature 1 9 17 W 1 9 17 W 1 9 17 W Range To To To Total B To To To Total B To To To Total B ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 9 / 94 71. 74.1 1 1 74. 85 / 89 13 13 71.5 46 1 47 71.6 11 4 15 71.8 8 / 84 128 14 142 69.5 3 151 32 186 7.1 9 12 51 18 7.7 75 / 79 25 87 88 2 68.1 64 46 132 242 68.8 123 18 163 34 69.3 7 / 74 157 12 126 295 66.2 152 5 79 236 66.8 13 1 22 126 67.8 65 / 69 52 12 64 63.7 27 4 31 64. 5 5 64.9 6 / 64 6 6 6.5 2 2 6. 64. 55 / 59 58. 5 / 54 Caution: This summary reflects the typical distribution of temperature in a typical year. It does not reflect the typical moisture distribution. Because wet bulb temperatures are averaged, this summary understates the annual moisture load. For accurate moisture load data, see the long-term humidity summary and the ventilation and infiltration load pages in this manual.
Dry-Bulb Temperature Hours For An Average Year (Sheet 3 of 5) Period of Record = 1967 to 1996 July August September Hour M Hour M Hour M Group (LST) C Group (LST) C Group (LST) C Temperature 1 9 17 W 1 9 17 W 1 9 17 W Range To To To Total B To To To Total B To To To Total B ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 9 / 94 5 5 74.3 16 16 74.1 12 12 74.6 85 / 89 131 1 141 72.6 157 17 174 73. 148 1 158 73.2 8 / 84 15 99 69 183 71.5 24 7 87 181 72. 19 73 83 175 72.3 75 / 79 173 13 16 346 7. 187 5 142 334 7.5 162 7 142 311 7.7 7 / 74 59 9 68 68.6 37 2 39 69. 57 5 62 69. 65 / 69 1 1 66.1 66.6 2 2 65.9 6 / 64 55 / 59 5 / 54 Caution: This summary reflects the typical distribution of temperature in a typical year. It does not reflect the typical moisture distribution. Because wet bulb temperatures are averaged, this summary understates the annual moisture load. For accurate moisture load data, see the long-term humidity summary and the ventilation and infiltration load pages in this manual.
Dry-Bulb Temperature Hours For An Average Year (Sheet 4 of 5) Period of Record = 1967 to 1996 October November December Hour M Hour M Hour M Group (LST) C Group (LST) C Group (LST) C Temperature 1 9 17 W 1 9 17 W 1 9 17 W Range To To To Total B To To To Total B To To To Total B ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 8 16 Obs ( o F) 9 / 94 4 4 74.4 75.3 85 / 89 114 2 116 73. 43 43 72.9 9 9 73.4 8 / 84 11 113 62 186 72.1 3 13 22 155 71.5 97 7 14 7.6 75 / 79 141 15 164 32 7.4 86 58 143 287 69.9 29 11 88 226 68.9 7 / 74 87 2 19 18 68.6 116 9 66 191 67.9 123 3 121 274 66.8 65 / 69 9 1 1 65.6 31 8 39 64.6 69 3 29 11 64. 6 / 64 59.7 4 1 5 6.5 23 4 27 6.1 55 / 59 57.4 3 3 56.5 5 / 54 Caution: This summary reflects the typical distribution of temperature in a typical year. It does not reflect the typical moisture distribution. Because wet bulb temperatures are averaged, this summary understates the annual moisture load. For accurate moisture load data, see the long-term humidity summary and the ventilation and infiltration load pages in this manual.
Dry-Bulb Temperature Hours For An Average Year (Sheet 5 of 5) Period of Record = 1967 to 1996 Annual Totals Hour M Group (LST) C Temperature 1 9 17 W Range To To To Total B ( o F) 8 16 Obs ( o F) 9 / 94 38 38 74.3 85 / 89 765 44 89 72.7 8 / 84 85 124 439 1728 71. 75 / 79 117 718 142 3137 69.4 7 / 74 127 174 842 2223 66.8 65 / 69 458 19 171 648 63.7 6 / 64 136 1 22 159 59.9 55 / 59 17 1 18 55.9 5 / 54 53. Caution: This summary reflects the typical distribution of temperature in a typical year. It does not reflect the typical moisture distribution. Because wet bulb temperatures are averaged, this summary understates the annual moisture load. For accurate moisture load data, see the long-term humidity summary and the ventilation and infiltration load pages in this manual.
Annual Summary of Temperatures 1 9 8 7 6 5 4 3 2 1 7-Jan 21-Jan 4-Feb 18-Feb 4-Mar 18-Mar 1-Apr 15-Apr 29-Apr 13-May 27-May 1-Jun 24-Jun 8-Jul 22-Jul 5-Aug 19-Aug 2-Sep 16-Sep 3-Sep 14-Oct 28-Oct 11-Nov 25-Nov 9-Dec 23-Dec Temperature ( o F) 1.% Dry Bulb Temp MCWB (1% Dry Bulb) Mean Max Temp Mean Min Temp 99% Min Dry Bulb Temp
Long Term Humidity and Dry Bulb Temperature Summary 22 21 2 19 18 17 16 15 14 13 12 11 1 9 8 7 6 5 4 3 2 1 11 15 1 95 9 85 8 75 7 65 6 55 5 45 4 35 3 25 2 15 1 5 7-Jan 21-Jan 4-Feb 18-Feb 4-Mar 18-Mar 1-Apr 15-Apr 29-Apr 13-May 27-May 1-Jun 24-Jun 8-Jul 22-Jul 5-Aug 19-Aug 2-Sep 16-Sep 3-Sep 14-Oct 28-Oct Humidity Ratio (gr/lb) 11-Nov 25-Nov 9-Dec 23-Dec Dry Bulb Temperature ( o F) 1.% Max HR Mean Max HR Mean Min HR MCDB Temp (1% Max HR)
Long Term Dry Bulb Temperature and Humidity Summary Week 1.% MCWB @ Mean Max Mean Min 99% 1.% MCDB @ Mean Max Mean Min Ending Temp ( o F) 1% Temp ( o F) Temp ( o F) Temp ( o F) Temp ( o F) HR (gr/lb) 1% HR ( o F) HR (gr/lb) HR (gr/lb) 7-Jan 83. 71.7 79.6 66.2 6. 119. 78.6 95.5 77.5 14-Jan 83. 71.7 79.5 66.3 61. 119.7 76.3 97.8 79.8 21-Jan 83. 72. 79.4 66.3 6. 121.8 76.9 97.2 78.3 28-Jan 83. 7.7 79.4 66. 59. 116.2 78. 94.9 76.9 4-Feb 82. 7.6 79.5 64.9 58. 114.8 77.4 94.3 75.2 11-Feb 83. 71.4 79.5 65.5 6. 118.3 8.7 94.2 75.2 18-Feb 83. 69.9 79.6 67.1 6. 119. 78. 94.6 76.6 25-Feb 83. 7.9 8. 66.9 61. 114.8 78.1 95. 77.4 4-Mar 83. 69.6 79.8 66.4 6. 115.5 75.7 91.5 74. 11-Mar 84. 7.3 8.7 67.3 63. 19.9 79.4 93.8 75.8 18-Mar 84. 69.8 8.4 67.9 61. 113.4 78.5 93.2 76.3 25-Mar 84. 69.9 8.9 68.6 63. 11.6 77.2 93.6 77.5 1-Apr 85. 7.7 81.3 68.7 63. 15.7 77.5 93. 77.9 8-Apr 85. 72.3 81.6 69. 64. 114.1 82.6 93.7 78.2 15-Apr 85. 7.5 82. 69.2 64. 17.1 77.8 94.9 78.4 22-Apr 85. 7.9 82.4 69.7 66. 11.6 78.7 95.9 79.8 29-Apr 86. 71.9 82.8 69.6 65. 11.6 79.4 95.7 79.8 6-May 86. 72.1 83.1 7.2 66. 114.1 76.4 94.8 78.7 13-May 86. 71.5 83.7 7.5 66. 114.1 78.8 96.9 82.8 2-May 87. 72.4 84.2 71.2 66. 114.8 79.8 99.1 83.5 27-May 87. 72. 84.6 71.5 67. 114.8 81. 99.5 83.4 3-Jun 88. 72.5 85.2 71.8 68. 112. 8.4 1.1 84. 1-Jun 88. 72. 85.7 72.9 7. 113.4 78.5 1.6 85.3 17-Jun 88. 72.6 85.8 73. 7. 118.3 77.8 11.8 86.2 24-Jun 88. 72.5 86.2 73.2 71. 121.8 8.2 11.9 86.4 1-Jul 89. 73.3 86.4 73.6 71. 126.7 8.4 13.5 87.5 8-Jul 89. 73.6 86.8 74. 72. 121.8 8.6 14.1 87.4 15-Jul 89. 73.5 86.8 74.3 72. 118.3 79.7 15.5 9.1 22-Jul 89. 73.7 86.9 74.3 71. 122.5 81. 17.1 9.1 29-Jul 89. 74.1 87.2 74.8 72. 126.7 79.7 17.9 92.2 5-Aug 9. 74.4 87.7 75.2 72. 123.2 78.5 17.6 91.8 12-Aug 9. 74.1 87.9 75.1 72. 123.9 8.6 18.1 92.3 19-Aug 9. 73.8 88.1 75.4 73. 123.2 8.2 19.1 93.1 26-Aug 91. 75. 88.2 75.2 72. 126.7 83.8 17.8 92.4 2-Sep 9. 73.6 88.2 74.7 71. 13.9 82.7 18.4 92.5 9-Sep 91. 74.4 88.1 74.7 71. 124.6 78.7 19.9 92.9 16-Sep 9. 74.5 87.8 74.4 7. 131.6 81.5 111.3 94.4 23-Sep 9. 74.5 87.7 74.4 71. 13.9 85.3 19.6 93. 3-Sep 9. 74.9 87.6 74.2 71. 127.4 81.4 11.9 93.6 7-Oct 9. 74.1 87.2 73.9 7. 135.8 82.3 11.4 93.6 14-Oct 89. 73.7 86.8 73.8 7. 13.9 81.1 18.5 92.6 21-Oct 89. 73.7 86.3 73.2 69. 127.4 79.9 19.9 92.8 28-Oct 88. 73. 85.4 72.6 68. 123.2 81. 16.3 89.3 4-Nov 88. 73.9 84.9 72. 68. 127.4 82.2 18.5 9.2 11-Nov 87. 73.4 84.5 72.2 67. 123.9 77.9 16.3 89. 18-Nov 87. 73. 83.2 71.1 66. 124.6 77. 15.6 87.8 25-Nov 86. 72.9 82.9 71.2 66. 123.2 79.1 15. 86.7 2-Dec 86. 73.3 82.5 69.7 62. 122.5 79.8 14.6 86.4 9-Dec 86. 74.2 81.7 68.9 63. 127.4 8.4 1.7 82.5 16-Dec 85. 72.5 81. 68.7 6. 121.8 81. 98.5 81. 23-Dec 84. 7.7 8.3 67.4 6. 123.2 76.3 98.9 79.7 31-Dec 83. 7.8 8.1 67.1 61. 123.2 76.3 98.1 79.6
Degree Days, Heating and Cooling (Base 65 o F) 1 5 Degree Days ( o F) -5-1 -15-2 -25-3 J F M A M J J A S O N D Mean Cooling Degree Days Mean Heating Degree Days Mean Cooling Mean Heating Degree Days ( o F) Degree Days ( o F) JAN 237 7 FEB 22 6 MAR 271 2 APR 34 1 MAY 368 JUN 41 JUL 457 AUG 485 SEP 458 OCT 421 NOV 351 DEC 282 4 ANN 4263 2
Average Ventilation and Infiltration Loads (Outside Air vs. 75 o F, 6% RH summer; 68 o F, 3% RH winter) 4 3 2 1 Load (Btu/cfm) -1-2 -3-4 -5-6 -7-8 J F M A M J J A S O N D Average Sensible Cooling Load Average Sensible Heating Load Average Latent Cooling (Drying) Load Average Latent Heating (Humidifying) Load Average Sensible Average Sensible Average Latent Average Latent Cooling Load Heating Load Cooling Load Heating Load (Btu/cfm) (Btu/cfm) (Btu/cfm) (Btu/cfm) JAN 858-548 5177 FEB 86-447 413 MAR 1133-22 41 APR 1555-79 4454 MAY 2368-31 6147 JUN 3158-1 7444 JUL 3951 9668 AUG 463 1732 SEP 4244 1113 OCT 347-3 1431 NOV 226-55 8839 DEC 1237-285 656 ANN 29616-1669 88641
Average Annual Solar Radiation Nearest Available Site (Source: National Renewable Energy Laboratory, Golden CO, 1995) City: HONOLULU State: HI WBAN No: 22521 Lat(N): 21.33 Long(W): 157.92 Elev(ft): 16 Stn Type: Primary SHADING GEOMETRY IN DIMENSIONLESS UNITS Window: 1 Overhang: 1.193 Vert Gap:.2 AVERAGE INCIDENT SOLAR RADIATION (Btu/sq.ft./day), Percentage Uncertainty = 9 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year HORIZ Global 124 149 171 187 21 27 29 25 188 159 131 118 171 Std Dev 89 118 135 115 98 6 69 78 73 68 73 81 37 Minimum 12 118 141 16 178 195 194 185 17 147 115 12 159 Maximum 139 163 193 26 217 217 22 218 2 171 143 13 178 Diffuse 5 55 66 75 74 74 7 67 65 59 53 47 63 Clear Day Global 165 193 225 249 26 262 26 251 232 2 17 156 219 NORTH Global 32 37 41 48 63 78 71 53 43 38 34 31 47 Diffuse 32 37 41 46 49 53 5 46 42 38 34 31 42 Clear Day Global 28 31 35 43 68 91 8 5 35 32 28 26 46 EAST Global 75 89 98 13 19 11 111 111 17 95 78 73 97 Diffuse 41 46 52 58 59 59 58 57 55 49 43 39 51 Clear Day Global 12 116 13 139 141 14 14 139 132 119 14 97 125 SOUTH Global 133 128 11 68 49 46 45 58 89 118 13 135 92 Diffuse 52 54 54 51 46 46 45 47 52 55 54 51 5 Clear Day Global 2 178 132 74 42 39 38 57 17 162 193 23 118 WEST Global 74 86 95 1 15 19 111 111 13 89 76 69 94 Diffuse 4 46 53 58 59 59 58 57 55 49 43 39 51 Clear Day Global 12 116 13 139 141 14 14 139 132 119 14 97 125
Average Annual Solar Heat and Illumination Nearest Available Site (Source: National Renewable Energy Laboratory, Golden CO, 1995) AVERAGE TRANSMITTED SOLAR RADIATION (Btu/sq.ft./day) FOR DOUBLE GLAZING, Percentage Uncertainty = 9 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year HORIZ Unshaded 88 17 124 136 147 152 154 15 137 115 93 83 124 NORTH Unshaded 22 25 29 32 38 45 41 33 29 27 24 21 31 Shaded 17 19 22 24 27 3 29 26 23 21 18 16 23 EAST Unshaded 52 63 7 74 78 78 79 8 77 67 55 51 69 Shaded 31 37 4 41 44 44 44 45 44 39 33 3 39 SOUTH Unshaded 96 87 62 4 32 32 31 35 52 77 92 99 61 Shaded 3 25 26 26 25 25 25 26 27 26 27 33 27 WEST Unshaded 52 6 68 71 75 78 79 79 74 63 53 48 67 Shaded 31 35 38 4 42 44 44 45 42 37 31 29 38 AVERAGE INCIDENT ILLUMINANCE (klux-hr) FOR MOSTLY CLEAR AND MOSTLY CLOUDY CONDITIONS, Percentage Uncertainty = 9 March June 9am 11am 1pm 3pm 5pm 9am 11am 1pm 3pm 5pm HORIZ. M.Clear 38 81 98 86 46 53 9 15 9 54 M.Cloudy 27 59 75 64 32 41 73 87 75 42 NORTH M.Clear 1 15 17 16 12 29 24 19 24 29 M.Cloudy 1 17 19 18 12 23 24 19 24 23 EAST M.Clear 76 69 22 16 12 77 63 16 16 13 M.Cloudy 38 47 22 18 12 52 52 17 18 14 SOUTH M.Clear 25 49 59 52 3 13 16 15 16 13 M.Cloudy 16 36 46 39 2 14 18 17 18 14 WEST M.Clear 1 15 17 62 77 13 16 15 61 77 M.Cloudy 1 17 19 46 4 14 18 17 52 52 M.Clear (% hrs) 45 4 38 38 39 41 37 35 37 4 Sept Dec 9am 11am 1pm 3pm 5pm 9am 11am 1pm 3pm 5pm HORIZ. M.Clear 47 87 1 85 44 25 63 76 61 23 M.Cloudy 36 7 84 69 33 17 44 55 43 16 NORTH M.Clear 12 16 17 16 11 8 14 15 14 8 M.Cloudy 13 18 19 18 12 7 14 17 15 7 EAST M.Clear 79 65 17 16 11 56 55 16 14 8 M.Cloudy 51 53 19 18 12 25 35 17 15 7 SOUTH M.Clear 22 42 49 41 2 41 74 83 72 36 M.Cloudy 19 38 44 36 17 19 44 54 43 17 WEST M.Clear 12 16 18 66 76 8 14 17 56 51 M.Cloudy 13 18 2 54 46 7 14 18 35 22 M.Clear (% hrs) 5 44 39 4 42 48 45 39 41 42
Wind Summary - December, January, and February Labels of Percent Frequency on North Axis NW NNW N 25 2 15 NNE NE WNW W 1 5 ENE E WSW ESE SW SE SSW S SSE >34 knots 25-34 knots 15-24 knots 6-14 knots 1-5 knots Percent Calm = 5.61 Wind Summary - March, April, and May Labels of Percent Frequency on North Axis NNW N 4 NNE NW 3 NE WNW W 2 1 ENE E WSW ESE SW SE SSW S SSE >34 knots 25-34 knots 15-24 knots 6-14 knots 1-5 knots Percent Calm = 2.84
Wind Summary - June, July, and August Labels of Percent Frequency on North Axis WNW W NW NNW N 5 4 3 2 1 NNE NE ENE E WSW ESE SW SSW S SSE SE >34 knots 25-34 knots 15-24 knots 6-14 knots 1-5 knots Percent Calm = 1.24 Wind Summary - September, October, and November Labels of Percent Frequency on North Axis N 4 NNW NNE NW 3 NE WNW W 2 1 ENE E WSW ESE SW SSW S SSE SE >34 knots 25-34 knots 15-24 knots 6-14 knots 1-5 knots Percent Calm = 3.36