Mercer Island, Washington

Mercer Island Sunrise and Sunset Times, December 2025

In December 2025, sunrise in Mercer Island moves from 7:37 AM on the 1st to 7:57 AM on the 31st, and sunset from 4:19 PM to 4:27 PM. Days get 12 minutes 21 seconds shorter over the month.

Daylight on the 1st8h 43mDecember 1, 2025

Daylight on the 31st8h 31mDecember 31, 2025

Change over the month−0h 12mlosing about 0.4 min a day

Time zonePSTAmerica/Los_Angeles

Daily table, December 2025

Date	First light	Sunrise	Sunset	Last light	Day length	Change	Moon
1 Mon	7:01 AM	7:37 AM	4:19 PM	4:55 PM	8h 43m	−1m 41s
2 Tue	7:03 AM	7:38 AM	4:19 PM	4:54 PM	8h 41m	−1m 37s
3 Wed	7:04 AM	7:39 AM	4:19 PM	4:54 PM	8h 40m	−1m 33s
4 Thu	7:05 AM	7:40 AM	4:18 PM	4:54 PM	8h 38m	−1m 29s	Full Moon
5 Fri	7:06 AM	7:41 AM	4:18 PM	4:53 PM	8h 37m	−1m 24s
6 Sat	7:07 AM	7:42 AM	4:18 PM	4:53 PM	8h 35m	−1m 19s
7 Sun	7:08 AM	7:43 AM	4:18 PM	4:53 PM	8h 34m	−1m 14s
8 Mon	7:09 AM	7:44 AM	4:17 PM	4:53 PM	8h 33m	−1m 10s
9 Tue	7:10 AM	7:45 AM	4:17 PM	4:53 PM	8h 32m	−1m 04s
10 Wed	7:11 AM	7:46 AM	4:17 PM	4:53 PM	8h 31m	−1m 00s
11 Thu	7:11 AM	7:47 AM	4:17 PM	4:53 PM	8h 30m	−0m 55s	Last Quarter
12 Fri	7:12 AM	7:48 AM	4:17 PM	4:53 PM	8h 29m	−0m 49s
13 Sat	7:13 AM	7:49 AM	4:18 PM	4:53 PM	8h 29m	−0m 45s
14 Sun	7:14 AM	7:50 AM	4:18 PM	4:54 PM	8h 28m	−0m 39s
15 Mon	7:15 AM	7:51 AM	4:18 PM	4:54 PM	8h 27m	−0m 34s
16 Tue	7:15 AM	7:51 AM	4:18 PM	4:54 PM	8h 27m	−0m 28s
17 Wed	7:16 AM	7:52 AM	4:18 PM	4:54 PM	8h 26m	−0m 23s
18 Thu	7:17 AM	7:53 AM	4:19 PM	4:55 PM	8h 26m	−0m 18s
19 Fri	7:17 AM	7:53 AM	4:19 PM	4:55 PM	8h 26m	−0m 13s	New Moon
20 Sat	7:18 AM	7:54 AM	4:20 PM	4:56 PM	8h 26m	−0m 07s
21 Sun	7:18 AM	7:54 AM	4:20 PM	4:56 PM	8h 26m	−0m 01s
22 Mon	7:19 AM	7:55 AM	4:21 PM	4:57 PM	8h 26m	+0m 04s
23 Tue	7:19 AM	7:55 AM	4:21 PM	4:57 PM	8h 26m	+0m 09s
24 Wed	7:20 AM	7:56 AM	4:22 PM	4:58 PM	8h 26m	+0m 15s
25 Thu	7:20 AM	7:56 AM	4:23 PM	4:59 PM	8h 27m	+0m 20s
26 Fri	7:20 AM	7:56 AM	4:23 PM	4:59 PM	8h 27m	+0m 26s
27 Sat	7:21 AM	7:56 AM	4:24 PM	5:00 PM	8h 28m	+0m 30s	First Quarter
28 Sun	7:21 AM	7:57 AM	4:25 PM	5:01 PM	8h 28m	+0m 37s
29 Mon	7:21 AM	7:57 AM	4:26 PM	5:02 PM	8h 29m	+0m 41s
30 Tue	7:21 AM	7:57 AM	4:27 PM	5:02 PM	8h 30m	+0m 47s
31 Wed	7:21 AM	7:57 AM	4:27 PM	5:03 PM	8h 31m	+0m 52s

First and last light are civil dawn and dusk, when the sun is 6° below the horizon. Times are local and rounded to the minute.

Other months in 2025

December 2026 · December 2027 · December 2028 · Today in Mercer Island · Golden hour · Moon

December 2025 in nearby places

Questions about December in Mercer Island

What time is sunrise in Mercer Island in December 2025?

Sunrise moves from 7:37 AM on December 1 to 7:57 AM on December 31, local time.

What time is sunset in Mercer Island in December 2025?

Sunset moves from 4:19 PM on December 1 to 4:27 PM on December 31, local time.

How much daylight does Mercer Island gain or lose in December?

Days get 12 minutes 21 seconds shorter over December 2025, from 8 hours, 43 minutes to 8 hours, 31 minutes.