Heating and Wind Design Conditions for South Africa

City Lat. Long. Elev. Std. Pres. Heating Dry Bulb, °C Extreme Wind Speed, m/s Coldest Month WS / MCDB MCWS / MCWD to DB Annual Extreme Daily
0.4% 1% 99.6% 0.4% Mean DB Std. DB
°N °W Meters kPa 99.6% 99% 1% 2.5% 5% WS MCDB WS MCDB MCWS PWD MCWS PWD Max Min Max Min
Bloemfontein 29.10 S 26.30 E 1348 86.15 -3.5 -2.2 10.6 9.3 8.3 9.2 12.7 8.2 14.2 0.5 220 5.4 270 36.6 -5.6 1.4 1.7
Cape Town 33.98 S 18.60 E 42 100.82 3.6 4.9 14.5 13.0 11.8 13.7 14.1 12.4 14.2 0.1 40 5.2 170 34.5 1.3 1.6 0.8
Durban 29.97 S 30.95 E 8 101.23 10.0 11.1 11.9 10.4 9.2 10.6 21.0 9.2 20.5 0.3 340 6.3 30 34.0 7.6 1.2 1.1
Johannesburg 26.13 S 28.23 E 1700 82.50 1.0 2.8 9.6 8.5 7.6 8.7 12.7 7.9 12.3 4.1 210 4.1 300 31.6 -1.6 1.0 1.7
Marion Island 46.88 S 37.87 E 22 101.06 -0.9 -0.1 26.7 23.7 21.1 26.3 3.1 23.0 5.9 7.6 200 9.6 290 20.1 -4.6 5.0 2.4
Port Elizabeth 33.98 S 25.60 E 60 100.61 6.3 7.5 14.6 12.9 11.5 13.7 14.7 12.4 15.5 0.9 270 4.3 290 35.9 3.5 2.1 1.2
Pretoria 25.73 S 28.18 E 1322 86.42 3.9 5.1 6.4 5.4 4.7 5.8 15.9 5.0 15.2 0.5 220 1.9 270 34.7 1.6 1.6 1.1