Sunset & Sunrise Today in Castro Valley, California

In Castro Valley, California, the sun rises at 6:31 AM and sets at 7:49 PM today, Sunday, August 23, 2026, for a total of 13h 18m of daylight. Local solar noon in Castro Valley falls at 1:11 PM.

Sitting at 37.69° latitude puts Castro Valley in the mid-latitudes — daylight swings noticeably between the long days of summer and the short days of winter. Each day is currently getting about 2 minutes shorter and 14 seconds. This is summer in Castro Valley, so the daily sun times are still on the move.

If you're shooting at sunset, aim for Castro Valley's golden hour, about 7:15 PM to 8:07 PM. The blue hour follows, roughly 8:07 PM to 8:17 PM, as twilight deepens.

Tomorrow, sunset in Castro Valley is at 7:48 PM and sunrise at 6:32 AM — about 2m 14s less daylight than today. The table below shows how sunrise and sunset in Castro Valley drift across the whole year.

This is high summer in Castro Valley, the season of long evenings. Over the course of the year, sunset in Castro Valley ranges from as early as 4:49 PM (around November 30) to as late as 8:33 PM (around June 20). Its longest day lands on June 20 with 14h 45m of daylight, and its shortest on December 21 with just 9h 32m.