Portland weather in January

In January, Portland sees average daytime highs of 65°F and overnight lows near 51°F, with 2.1 in of rain across 6.5 wet days and about 10.4 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 65°F through the month. The sky is clear or mostly clear about 35% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of January to 10 h 42 min by month's end. Set against the rest of the year, January is Portland's 11th-clearest and 7th-windiest month. For the whole year in context, see Portland's year-round climate.

Daytime high
65°
12th warmest
Overnight low
51°
1st coldest
Rainfall
2.1 in
6.5 wet days
Daylight
10 h 24 min
7:26 AM – 5:51 PM
Cloud cover
58%
11th clearest
Wind
10 mph
7th windiest
Solar energy
3.03 kWh/m²
Travel score
6.5
out of 10

Portland is city in Texas, United States.

Density
580/km²
people per km²

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 65°F through the month.

A typical January day in Portland reaches about 65°F in the afternoon and slips back to 51°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 74°F. Set against its neighbours, January runs about 2°F cooler than December and about 3°F cooler than February.

30°40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
16450
26450
36450
46450
56450
66450
76450
86450
96450
106450
116550
126550
136550
146550
156550
166551
176551
186551
196551
206551
216551
226551
236551
246551
256551
266551
276551
286551
296651
306651
316652

How January really feels in Portland

Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 0 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
0
wind chill below the day's low

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Portland weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan65° / 51°2.16.510.46.5
Feb68° / 54°1.55.2116.9
Mar73° / 60°2.26.211.87.4
Apr78° / 66°2.06.412.67.4
May83° / 73°2.78.813.46.1
Jun87° / 77°2.910.213.74.8
Jul89° / 78°2.28.613.64.5
Aug89° / 78°2.39.7134.2
Sep87° / 75°4.313.812.24.5
Oct81° / 67°3.48.811.36.8
Nov73° / 59°2.26.810.67.4
Dec67° / 52°2.16.310.36.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34555
44555
54654
64654
74654
84654
94654
104654
114654
124654
134654
144654
154654
164753
174753
184654
194753
204753
214753
224753
234753
244753
254654
264654
274654
284555
294456
304456
314357

Chance of precipitation in January

Any precipitation

Portland gets around 2.1 in of rain over 6.5 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 22% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
219
319
420
520
620
721
821
921
1021
1121
1221
1322
1422
1522
1622
1722
1822
1922
2022
2122
2222
2322
2422
2522
2622
2722
2822
2922
3021
3121

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
166131281
265141281
366141280
465141290
565141290
665141290
765141290
865141290
966141280
1065151280
1165151280
1264151380
1364151380
1465151370
1564151470
1664151470
1764151470
1864151470
1963151570
2063151570
2163151570
2263161560
2363151660
2463151660
2563151660
2663151660
2763151660
2862151670
2962151670
3062151670
3162151670

Wind in January

Winds average 10 mph in January.

Across January, daily wind ranges from about 10 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 18 min at the start of January to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over January. Sunrise moves from 7:25 AM to 7:22 AM, and sunset from 5:40 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.37:255:40
210.37:255:41
310.37:255:42
410.37:255:42
510.37:265:43
610.37:265:44
710.37:265:44
810.37:265:45
910.37:265:46
1010.37:265:46
1110.37:265:47
1210.47:265:48
1310.47:265:49
1410.47:265:49
1510.47:265:50
1610.47:265:51
1710.47:265:52
1810.47:265:53
1910.57:265:53
2010.57:265:54
2110.57:265:55
2210.57:255:56
2310.57:255:56
2410.57:255:57
2510.67:255:58
2610.67:245:59
2710.67:246:00
2810.67:246:00
2910.67:236:01
3010.77:236:02
3110.77:226:03

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.03 kWh/m².

For context, solar energy here swings from a low near 2.76 kWh/m² to a high of 6.6 kWh/m² in July across the year — January's 3.03 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.9Moderate
102.9Moderate
112.9Moderate
122.9Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.2Moderate
253.2Moderate
263.2Moderate
273.2Moderate
283.2Moderate
293.2Moderate
303.3Moderate
313.3Moderate
Planning a trip in January

Hazard calendar for Portland

In seasonPeak

None of Portland's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Portland sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Portland?

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

6.5
Sightseeing
7th-best month of the year
2.4
Beach & pool
12th-best month of the year

January is a reasonable time to visit Portland for sightseeing.

What to pack for Portland in January

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

In January, Portland sees daytime highs around 65°F and nights near 51°F. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Portland in January

The nearest coast averages about 65°F in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 21 mi away) is warmest in September at about 84°F and coldest in February near 64°F.

It's comfortable for a long swim from Mar 29 to Dec 20 — about 8.8 months when the water holds above 68°F.

60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan65Cool
Feb64Cool
Mar66Cool
Apr71Refreshing
May77Warm
Jun82Tropical
Jul83Tropical
Aug84Tropical
Sep84Tropical
Oct80Warm
Nov73Refreshing
Dec69Refreshing

UV index in Portland in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Portland peaks around June 16 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 16UV 11Dec 21UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar7High
Apr10Very high
May11Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct7High
Nov5High
Dec4Moderate

Air quality in Portland in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Portland is worst in July — around 20 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (November, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1419 µg/m³Nov 116 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar12Good
Apr12Good
May16Moderate
Jun17Moderate
Jul20Moderate
Aug13Moderate
Sep11Good
Oct6Good
Nov6Good
Dec7Good
Location & terrain

Where is Portland?

Portland sits at 27.9°N, 97.3°W, 43 ft above sea level, in United States. The nearest listed city is Corpus Christi, 6.8 mi away.

Topography around Portland

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

Within 2 miles, the terrain around Portland has only modest variations in elevation — a maximum elevation change of 56 ft around an average of 16 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 115 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 394 ft.

The land around Portland is covered by water (47%) and artificial surfaces (25%) within 2 miles, water (38%) and cropland (33%) within 10 miles, and water (33%), grassland (23%) and cropland (20%) within 50 miles.

2 miles
56 ft
10 miles
115 ft
50 miles
394 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Corpus Christi 6.8 mi · Kingsville 41 mi · Alice 47 mi · Victoria 67 mi · Bay City 112 mi · Harlingen 119 mi · Edinburg 121 mi · San Benito 122 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 Portland (27.8773°, -97.3239°, elevation 43 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).