Cosmopolis, Chehalis River Sunrise & Sunset
Sunday, September 13 at Cosmopolis, Chehalis River, Washington. There are 12h 41m of daylight, from sunrise at 6:50 AM to sunset at 7:31 PM.
The light today
From first light to last, local to Cosmopolis, Chehalis River.
Daylight by month in Cosmopolis, Chehalis River
How sunrise, sunset, and the length of the day change across 2026 at this latitude. Times are for the 15th of each month.
| Month | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| Jan | 7:57 AM | 4:53 PM | 8h 57m | |
| Feb | 7:20 AM | 5:40 PM | 10h 20m | |
| Mar | 7:28 AM | 7:21 PM | 11h 52m | |
| Apr | 6:28 AM | 8:04 PM | 13h 36m | |
| May | 5:40 AM | 8:44 PM | 15h 04m | |
| JunLongest | 5:20 AM | 9:12 PM | 15h 52m | |
| Jul | 5:35 AM | 9:06 PM | 15h 31m | |
| Aug | 6:12 AM | 8:26 PM | 14h 14m | |
| Sep | 6:53 AM | 7:27 PM | 12h 35m | |
| Oct | 7:33 AM | 6:28 PM | 10h 55m | |
| Nov | 7:18 AM | 4:41 PM | 9h 22m | |
| DecShortest | 7:54 AM | 4:27 PM | 8h 33m |
Longest day around June 21 (15h 54m), shortest around December 21 (8h 31m). That is a swing of 7h 23m across the year.
Time your day on the water
Sunrise, tides, and the day's conditions worth knowing for your spots, plus the occasional PATHR update. No spam.
Sunrise, sunset & daylight at Cosmopolis, Chehalis River
On the water, the light runs the day. First light is when you can start to see the channel; the hour after sunrise and the hour before sunset is the soft golden light anglers and photographers wait for; and last light is your deadline to be back on the mooring. The times on this page are calculated for Cosmopolis, Chehalis River’s exact position and follow the local clock, daylight saving included.
Daylight is not fixed. It swings with the season, and how far it swings depends on latitude. Cosmopolis, Chehalis River runs from about 8h 31m at the shortest day to 15h 54m at the longest. Plan an early start against first light, line up the evening bite with the golden hour and sunset, and cross-check the Cosmopolis, Chehalis River tide chart and marine forecast before you head out.
Frequently asked
What time is sunrise and sunset in Cosmopolis, Chehalis River today?+
On Sunday, September 13, the sun rises at 6:50 AM and sets at 7:31 PM at Cosmopolis, Chehalis River, Washington. First light (dawn) is around 6:19 AM and last light (dusk) is around 8:02 PM.
How many hours of daylight does Cosmopolis, Chehalis River get today?+
Sunday, September 13 has 12h 41m of daylight at Cosmopolis, Chehalis River. The days are getting shorter by about 4 minutes a day right now.
When is the longest and shortest day of the year in Cosmopolis, Chehalis River?+
The longest day at Cosmopolis, Chehalis River is around June 21 with 15h 54m of daylight, and the shortest is around December 21 with 8h 31m. That is a swing of 7h 23m across the year.
What is first light, golden hour, and solar noon?+
First light (civil dawn) is when the sky brightens enough to see, about 30 minutes before sunrise. Golden hour is the soft, low-angle light right after sunrise and right before sunset. Solar noon is when the sun is highest, at 1:11 PM today. These matter for planning a dawn departure, a photo, or the evening bite.
Are these sunrise and sunset times accurate?+
Yes. They are calculated to the minute for Cosmopolis, Chehalis River's exact coordinates (46.967°, -123.778°) using the standard astronomical equations NOAA's own solar calculator uses, and they follow the local time zone including daylight saving. Times are for a flat sea horizon; hills or headlands can shift the real moment a little.
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