Seasonal figures below use a 2025 reference year. Choose a date in the planner above for that day’s times, golden hour, twilight, and daylight milestones.
Seasonal Sun Milestones in Del Rio
Del Rio's 8 PM sunsets run from about March 28 to September 5 — 162 evenings in a typical year. The wider season of sunsets at 7 PM or later lasts 234 days, from March 9 to October 28. Even in midwinter, sunset here never falls before 5 PM on the clock.
Days in Del Rio first reach 12 hours of daylight around March 16, a few days before the March equinox, and drop back under 12 hours after September 26. Days with at least 14 hours of daylight run from June 11 to June 29.
The Sun's rising point moves along the horizon too. Around the June solstice it rises in the ENE (62°) and sets in the WNW (298°); by the December solstice it rises in the ESE (117°) and sets in the WSW (243°). That is a 55° swing — worth knowing when choosing a west-facing viewpoint for a summer sunset or an east-facing window for winter morning light.
Dates use the 2025 reference year. Clock-time milestones near daylight-saving changes move with the second Sunday in March and the first Sunday in November.
Daylight Through the Year in Del Rio
At 29.37°N, Del Rio has a milder seasonal daylight swing than cities to the north. Across the year, the length of the day here varies by 3h 46m.
On the summer solstice around June 21, Del Rio receives 14h 2m of daylight — the longest day of the year. By the winter solstice around December 21, that shrinks to 10h 16m, the shortest day. At the spring and autumn equinoxes, day and night are nearly equal at about 12h 8m, as they are everywhere on Earth.
Sunset moves fastest around September, when it shifts by up to 1.2 minutes a day in Del Rio, and barely moves for weeks around the solstices. See how sunrise and sunset change through the year for why.
The Sun's Path Over Del Rio
Where the Sun sits in the sky over Del Rio depends on the season, and the contrast between summer and winter is set by the city's latitude of 29.37°N. On the summer solstice the midday Sun climbs to 84.1° above the horizon in Del Rio — nearly straight overhead, leaving objects almost no shadow at solar noon. On the winter solstice the midday Sun only reaches 37.2°, sitting much lower in the southern sky and casting long shadows even at noon.
Those roughly 47 degrees separating the summer and winter midday Sun are exactly what give Del Rio its seasons.
The live sun path at the top of this page shows the Sun's altitude and compass bearing for the current moment or any chosen date.
Earliest and Latest Sunrises and Sunsets in Del Rio
It is natural to assume Del Rio sees its latest sunset on the longest day of the year, but it does not. The latest sunset actually falls around June 30 at about 8:47 PM, while the earliest sunset comes around December 1 at roughly 5:45 PM — noticeably before the December solstice.
On the morning side, the earliest sunrise in Del Rio is around June 10 at 6:43 AM, and the latest sunrise around March 9 at 8:00 AM. The equation of time and daylight saving pull these dates away from the solstices — explained in why the latest sunset isn't on the longest day.
How Daylight Saving Time Moves Sunrise and Sunset in Del Rio
Del Rio, Texas changes its clocks twice a year, and both changes are visible in this page's numbers. On the second Sunday in March, Del Rio springs forward and the evening changes overnight: sunset jumps from about 6:48 PM on Saturday to about 7:48 PM on Sunday. The price is paid at dawn — sunrise slips from around 7:01 AM back to 8:00 AM, so mornings turn dark again just as they were brightening.
The reverse comes on the first Sunday in November, when clocks fall back: sunset drops from about 6:57 PM to 5:56 PM in a single day — the abrupt start of the early-dusk season — while sunrise brightens from around 7:57 AM to 6:58 AM.
Only the clock label shifts on those Sundays; the times above are for a typical year. More in how daylight saving time changes sunrise and sunset.
Golden Hour & Blue Hour Photography in Del Rio
For photographers in Del Rio, Texas, the planner shows your selected date's morning and evening golden-hour and blue-hour windows. Choose Today, Tomorrow, or a date in the calendar; all clock times are calculated in Del Rio's local timezone.
Golden "hour" is a misnomer — its length in Del Rio depends on the season, because it lasts as long as the Sun takes to climb from the horizon to 6° (or descend back). Around the equinoxes it runs about 31 minutes; near the June solstice, when the Sun rises and sets at a shallower angle, it stretches to roughly 35 minutes, and near the December solstice it lasts about 36 minutes.
See the golden hour guide and blue hour guide for how to plan a shoot around these windows.
Solar Energy Potential in Del Rio
Under clear skies, Del Rio, Texas receives about 5.9 peak sun hours per day averaged across the year — from roughly 3.2 in December up to 8.2 in June. One peak sun hour equals one hour of sunlight at full intensity (1 kW/m²), the standard unit for estimating solar panel output.
Because Del Rio sits at 29.4°N, a fixed, south-facing panel captures the most energy over the year when tilted at roughly 29° from horizontal — about equal to the latitude. If you adjust the tilt seasonally, flatten to about 14° in summer, when the Sun rides high, and steepen to about 44° in winter, when it stays low.
These are clear-sky upper bounds from Del Rio's solar geometry, not a forecast; clouds, shading, and equipment lower real output. See what peak sun hours mean.
How Del Rio Compares
Daylight in Del Rio swings 3h 46m between the June and December solstices. The median across the 1,847 cities on this site is 5h 16m, so Del Rio has a 1h 30m gentler seasonal swing than a typical American city. By that measure Del Rio ranks 1656th of 1,847 nationally, and 117th of the 131 Texas cities listed here — counting from the largest swing down.
Del Rio sits about 10.9° west of 90°W — the meridian Central Time is built around. Longitude alone therefore puts mean solar noon roughly 44 minutes after clock noon in standard time, so the Sun runs behind the clock here, which is why evenings hold light later than the time zone would suggest. The equation of time then moves true solar noon up to about 16 minutes either side of that through the year.
About Sun Times in Del Rio
Del Rio, Texas, has an estimated urban-area population of 34,668. Its primary county or equivalent is Val Verde; its center is at 29.37°N, 100.88°W. Clocks here follow Central Time, which is the timezone all sunrise, sunset, golden-hour and twilight times on this page are shown in.
Times are computed for Del Rio's city-center coordinates, so towns to the east see each event slightly earlier and towns to the west slightly later; the nearby-cities list above shows the typical gap.