Strewthcobber
Simon Poidevin (60)
At least:
Cardiff Arms Park (Blues)
Allianz Park (Saracens)
Kingston Park (Falcons)
Scotstoun (Glasgow Warriors)
Charles Mathon (Oyannax)
Have fully artificial turf.
http://playerwelfare.worldrugby.org/?documentid=155
In the "document" above on World Rugbys website, it does actually recommend artificial turf for extreme heat, albeit based on Grass Growth and multi use facilities.
Pretty interesting - and I reckon the likes of AAMI park should certainly be invesdtigating.
Still, after a bit of googling, it does seem like they haven't quite cracked the hot, sunny weather issue.
Ambient and surface temperature, relative humidity, wind speed, and cloud cover were measured on two natural grass and two adjacent artificial turf surfaces. The highest temperatures were recorded on 3G artificial turf (M = 46.3 °C, maximum = 86.6 °C)
Significant surface temperature differences were also observed between the synthetic turf fields at the two venues. The regional synthetic turf was found to be significantly warmer (by 5.9 °C) than the metropolitan synthetic turf which was the cool climate product. It should be noted, however, that high surface temperatures (up to 71.1 °C) were still experienced on the cool climate product, suggesting that further research into improving these products to reduce surface temperature remains a priority