Forecasts from multiple models indicate Helsinki's overnight minimum on August 29 will likely settle near 14–16 °C under mostly cloudy skies, light southeasterly winds of 5–8 m/s, and high humidity near 90 %, all moderating radiational cooling over the Baltic Sea. Historical August climatology shows typical lows around 13 °C, but the current stable high-pressure regime and lack of strong cold advection keep extremes below 11 °C or above 16 °C improbable. Model spreads arise mainly from differences in predicted cloud thickness and timing of any light showers, which can raise or lower the minimum by 1–2 °C depending on whether clear spells allow greater heat loss before dawn. Market-implied odds clustered around 11–15 °C reflect this narrow range of uncertainty in official guidance from sources such as the Finnish Meteorological Institute.