Sunrise & Sunset Times in St. Louis — August 2025

Sunrise & Sunset in St. Louis During August

August in St. Louis sees daylight shrinking at a more noticeable pace than July. By mid-month, the sun sets a full 30-40 minutes earlier than it did at the solstice. Morning twilight starts later, and the first hints of autumn's shorter days become apparent. Despite the decline, August still offers generous daylight — well over 13 hours at most mid-latitude locations. Golden hour arrives earlier each evening, giving warm, angled light that photographers prize.

Golden Hour & Twilight in August

During August, golden hour in St. Louis lasts approximately 64 minutes each morning and evening. The low sun angle during these periods produces warm, directional light prized by photographers and filmmakers. Civil twilight — the period when the sun is just below the horizon — adds extra usable light before sunrise and after sunset, extending the practical daylight window beyond the times shown in the table above.

Through August, days in St. Louis are shortening by roughly 2.2 minutes per day, adding up to about 1h 6m over the course of the month.

August 2025 Summary — St. Louis

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