Recent forecast models, including those from the Finnish Meteorological Institute, indicate a daytime maximum near 21°C in Helsinki on August 10, consistent with late-August climatology of 20–22°C highs as seasonal cooling sets in. Overcast skies, possible late-day rain, moderate southwesterly winds, and typical Baltic Sea humidity are expected to cap surface heating and limit peaks. Trader positioning favoring 22–23°C outcomes reflects model uncertainty ranges and historical day-to-day variability in coastal conditions, while lower probabilities for 24°C+ or sub-21°C results align with stable pressure patterns and the narrow spread of ensemble guidance. Updated official forecasts and observational data through the evening of August 9 will provide the clearest signals ahead of market resolution.