Recent model consensus from global ensembles points to a July 12 maximum near 27–28 °C in Istanbul, consistent with early-month climatology and the moderating influence of Bosphorus and Black Sea breezes that typically cap peaks 3–5 °C below inland values. Traders have clustered probability on the 26–28 °C brackets because current GFS and ECMWF runs show weak synoptic forcing, limited cloud cover, and light northerly flow that favors modest daytime heating without strong advection of hotter continental air. Slight upward bias in some extended forecasts reflects uncertainty in boundary-layer mixing and exact timing of any sea-breeze front, while the low odds on 31 °C+ outcomes align with historical rarity of such extremes before mid-July. Updated runs over the next 24–48 hours will likely tighten the range as resolution criteria focus on official Turkish Meteorological Service observations.