Recent forecasts indicate a cooling trend for Istanbul on August 28, driven by northerly winds advecting cooler maritime air and scattered showers that limit daytime heating while moderating overnight radiative cooling. Multiple models project overnight lows near 18–19°C, with some guidance dipping toward 16–17°C under clearer intervals or rising slightly above 20°C if cloud cover persists. This aligns with the late-August climatological decline from peak summer warmth, where average lows hover around 21°C but can vary several degrees based on wind direction and precipitation timing. Market odds near 50% across thresholds reflect model spread and the narrow range of likely outcomes just two days out, underscoring sensitivity to the next official updates from regional meteorological services.