Anacortes weather in December

In December, Anacortes sees average daytime highs of 44°F and overnight lows near 38°F, with 7.1 in of precipitation across 18 wet days and about 8.2 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 44°F through the month. The sky is clear or mostly clear about 14% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 24 min at the start of December to 8 h 06 min by month's end. Set against the rest of the year, December is Anacortes's 12th-clearest and 1st-windiest month. For the whole year in context, see Anacortes's year-round climate.

Daytime high
44°
12th warmest
Overnight low
38°
2nd coldest
Precipitation
7.1 in
18 wet days
Daylight
8 h 06 min
8:03 AM – 4:10 PM
Cloud cover
76%
12th clearest
Wind
8 mph
1st windiest
Solar energy
0.86 kWh/m²
Travel score
0.6
out of 10

Anacortes is city in Skagit County, Washington, United States.

Density
450/km²
people per km²
Founded
1891

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 44°F through the month.

A typical December day in Anacortes reaches about 44°F in the afternoon and slips back to 38°F overnight — a 6°F spread between the day's warmth and the night's chill. On most days the high lands between 38°F and 49°F. Set against its neighbours, December runs about 5°F cooler than November and on par with January.

20°30°40°50°151015202531
Avg high (°F)Avg low (°F)
14539
24539
34538
44538
54538
64438
74438
84438
94438
104438
114438
124438
134438
144438
154438
164438
174438
184438
194438
204438
214438
224437
234337
244337
254337
264337
274337
284337
294337
304337
314337

How December really feels in Anacortes

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 19 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
19
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Anacortes weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan44° / 38°7.218.33.18.60.7
Feb46° / 38°4.714.62.59.91.1
Mar49° / 40°5.718.31.411.61.7
Apr53° / 44°4.114.60.213.42.7
May58° / 49°3.010.30154.3
Jun62° / 53°2.28.4015.85.5
Jul67° / 57°1.04.3015.57.3
Aug68° / 58°1.44.6014.17.4
Sep64° / 55°2.88.4012.46.0
Oct56° / 48°5.614.2010.63.4
Nov49° / 42°8.218.40.991.5
Dec44° / 38°7.1182.98.20.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32872
42872
52773
62773
72674
82674
92575
102575
112476
122476
132377
142377
152179
162179
172179
182179
192278
202278
212377
222278
232377
242377
252476
262476
272575
282575
292575
302575
312674

Chance of precipitation in December

Any precipitationSnow

Anacortes gets around 7.1 in of rain and snow over 18 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 59% and peaks near 61% on the wettest days, and about 3 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1586
2586
3586
4586
5576
6586
7587
8587
9587
10597
11597
12607
13608
14608
15618
16619
176110
186110
196011
206011
216012
225912
235912
245912
255813
265813
275813
285813
295913
305913
315913

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 8 mph in December, the windiest month of the year.

Across December, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 24 min at the start of December to 8 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 7:49 AM to 8:09 AM, and sunset from 4:12 PM to 4:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.47:494:12
28.47:504:11
38.37:514:11
48.37:524:11
58.37:534:10
68.37:544:10
78.27:554:10
88.27:564:10
98.27:574:10
108.27:584:10
118.27:594:09
128.28:004:09
138.18:014:10
148.18:024:10
158.18:034:10
168.18:034:10
178.18:044:10
188.18:054:10
198.18:054:11
208.18:064:11
218.18:064:12
228.18:074:12
238.18:074:12
248.18:084:13
258.18:084:14
268.18:084:14
278.18:094:15
288.18:094:16
298.18:094:16
308.18:094:17
318.18:094:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.86 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.86 kWh/m² to a high of 6.43 kWh/m² in July across the year — December's 0.86 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.9Dim
20.9Dim
30.9Dim
40.9Dim
50.9Dim
60.9Dim
70.9Dim
80.9Dim
90.8Dim
100.8Dim
110.8Dim
120.8Dim
130.8Dim
140.8Dim
150.8Dim
160.8Dim
170.8Dim
180.8Dim
190.8Dim
200.8Dim
210.8Dim
220.8Dim
230.8Dim
240.8Dim
250.8Dim
260.8Dim
270.9Dim
280.9Dim
290.9Dim
300.9Dim
310.9Dim
Planning a trip in December

Hazard calendar for Anacortes

In seasonPeak

In December, Anacortes sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Anacortes's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Anacortes?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.6
Sightseeing
12th-best month of the year
0.0
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Anacortes.

What to pack for Anacortes in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Anacortes sees daytime highs around 44°F and nights near 38°F. Pack a warm layer and rain gear. Worth having: a heavy coat. About 18 days see rain.

a warm layerrain geara heavy coat

Sea temperature near Anacortes in December

The nearest coast averages about 47°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 mi away) is warmest in August at about 54°F and coldest in February near 46°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

45°50°55°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan46Bracing
Feb46Bracing
Mar47Bracing
Apr48Bracing
May50Bracing
Jun52Bracing
Jul53Bracing
Aug54Bracing
Sep53Bracing
Oct50Bracing
Nov49Bracing
Dec47Bracing

UV index in Anacortes in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Anacortes peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Anacortes in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Anacortes is worst in September — around 18 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1018 µg/m³Dec 176 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar12Good
Apr12Good
May12Good
Jun11Good
Jul11Good
Aug18Moderate
Sep18Moderate
Oct12Good
Nov7Good
Dec6Good
Location & terrain

Where is Anacortes?

Anacortes sits at 48.5°N, 122.6°W, 23 ft above sea level, in United States. The nearest listed city is Mount Vernon, 14 mi away.

Topography around Anacortes

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Anacortes.

Within 2 miles, the terrain around Anacortes has only modest variations in elevation — a maximum elevation change of 558 ft around an average of 75 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,581 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,758 ft.

The land around Anacortes is covered by water (51%) and trees (25%) within 2 miles, water (61%) and trees (22%) within 10 miles, and trees (49%) and water (35%) within 50 miles.

2 miles
558 ft
10 miles
1,581 ft
50 miles
10,758 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Mount Vernon 14 mi · Oak Harbor 15 mi · Bellingham 18 mi · Arlington 31 mi · Oak Bay 32 mi · Gordon Head 32 mi · Victoria 34 mi · Saanich 35 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Anacortes (48.5126°, -122.6127°, elevation 23 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).