Current forecasts from the Finnish Meteorological Institute and other models indicate highs near 19–20°C in Helsinki on August 21, consistent with typical late-summer cooling trends that lower average highs from 21°C early in the month toward 17–18°C by month’s end. Recent observations show stable conditions with daytime peaks around 19–21°C and increasing cloud cover or isolated showers, limiting further warming. Model consensus points to moderate southwesterly flow and no significant heat advection, though short-range updates could shift maxima by 1–2°C depending on timing of any frontal passages. Historical baselines place late-August extremes rarely above 25°C near the coast.