A case study investigation of summer temperature conditions at two coastal sites in the UK, and analysis of future temperatures and heat wave structures in a warming climate scenario.

Using observations for two UK coastal sites 25% increase in the number of summer days when the maximum temperature exceeds 25{\deg}C, a 60% increase when the temperature exceeds the minimum of 13{\deg}C, (Tables 3, 4) and an increase in heat wave events per annum of greater than 10 days, [Gadian et al. 2018]. The increases in summer temperatures are larger than those predicted in the 2013 IPCC assessment [Collins et al 2013], but consistent with the maximum temperatures and increased number of hot days listed in UKCP18 [Met Office 2019(b)]. The higher resolution model results suggest that the IPCC report underestimates the increases in maximum temperatures at these locations.