19 January 2022 at Kingsmead: 23 °C, humidity 87%, wind 21 km/h and 3.5 mm of rain during the hours of play. 54 of 430 evenings within three weeks of 21 January in the last 10 years had at least 1 mm of rain at Kingsmead during these hours.
These conditions are wet, with 3.5 mm of rain during the hours of play, and the wettest spell from 19:00 to 22:00 overlaps the second innings. At SA20 grounds, 37% of games in similar weather were shortened or washed out. Heat and wind have made no measurable difference to scoring. Lost overs and a rain-rule finish are a real possibility.
During play: 22.7 °C on average, humidity 87%, wind 21 km/h gusting to 47. Humidity climbs from 78% to 94%; at SA20 grounds, chasing success hasn't varied with humidity.
Heaviest rain 19:00–22:00, mostly over the second innings. Runs figures assume 20 overs. If overs are lost, totals and par come down: check how your bookmaker settles runs markets in reduced matches.