Uwajima weather in January

In January, Uwajima sees average daytime highs of 10°C and overnight lows near 4°C, with 60 mm of precipitation across 8.6 wet days and about 10.1 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 10°C through the month. The sky is clear or mostly clear about 26% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of January to 10 h 24 min by month's end. Set against the rest of the year, January is Uwajima's 8th-clearest and 1st-windiest month. For the whole year in context, see Uwajima's year-round climate.

Daytime high
10°
12th warmest
Overnight low
1st coldest
Precipitation
60 mm
8.6 wet days
Daylight
10 hours
7:18 AM – 5:20 PM
Cloud cover
59%
8th clearest
Wind
14 km/h
1st windiest
Solar energy
2.72 kWh/m²
Travel score
2.5
out of 10

Uwajima is city in Ehime Prefecture, Japan.

Density
151/km²
people per km²
Founded
2005

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 10°C through the month.

A typical January day in Uwajima reaches about 10°C in the afternoon and slips back to 4°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 14°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C cooler than February.

10°15°151015202531
Avg high (°C)Avg low (°C)
1114
2114
3114
4114
5114
6114
7114
8114
9114
10104
11104
12104
13104
14104
15104
16104
17104
18104
19103
20103
21103
22103
23103
24103
25103
26103
27103
28103
29103
30103
31103

How January really feels in Uwajima

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 13 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
13
wind chill below the day's low

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

Uwajima weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 608.61.110.12.5
Feb11° / 748.90.810.82.9
Mar15° / 11211.10.111.74.4
Apr19° / 11°12910.4012.86.1
May24° / 16°15010.4013.76.7
Jun26° / 20°27315.4014.25.5
Jul30° / 24°20113.80144.5
Aug31° / 24°13712.8013.24.0
Sep28° / 21°17812.7012.25.5
Oct23° / 16°1418.7011.27.2
Nov18° / 10°837.9010.36.2
Dec13° / 748.80.39.83.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 23% of January, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35545
45446
55446
65446
75347
85248
95149
105050
115050
124951
134852
144753
154852
164753
174654
184555
194555
204555
214555
224654
234654
244555
254654
264753
274753
284852
294852
304951
314951

Chance of precipitation in January

Any precipitationSnow

Uwajima gets around 60 mm of rain and snow over 8.6 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 28% and peaks near 31% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1263
2263
3263
4263
5263
6263
7263
8264
9264
10264
11264
12274
13274
14284
15284
16294
17304
18304
19304
20304
21314
22314
23314
24314
25314
26314
27304
28304
29304
30304
31294

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
241000
251000
261000
271000
281000
291000
30991
31991

Wind in January

Winds average 14 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 48 min at the start of January to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:18 AM to 7:13 AM, and sunset from 5:08 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:185:08
29.87:185:09
39.97:185:09
49.97:185:10
59.97:185:11
69.97:195:12
79.97:195:12
89.97:195:13
99.97:195:14
109.97:195:15
119.97:195:16
1210.07:195:16
1310.07:195:17
1410.07:195:18
1510.07:185:19
1610.07:185:20
1710.07:185:21
1810.17:185:22
1910.17:185:23
2010.17:175:23
2110.17:175:24
2210.17:175:25
2310.27:165:26
2410.27:165:27
2510.27:165:28
2610.27:155:29
2710.37:155:30
2810.37:145:31
2910.37:145:32
3010.37:135:33
3110.47:135:34

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.72 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.46 kWh/m² in May across the year — January's 2.72 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.6Moderate
42.6Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.9Moderate
262.9Moderate
272.9Moderate
283.0Moderate
293.0Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Hazard calendar for Uwajima

In seasonPeak

In January, Uwajima sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Uwajima sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Uwajima?

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

2.5
Sightseeing
12th-best month of the year
0.0
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Uwajima.

What to pack for Uwajima in January

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

In January, Uwajima sees daytime highs around 10°C and nights near 4°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Uwajima in January

The nearest coast averages about 17°C 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 20 km away) is warmest in August at about 27°C and coldest in February near 16°C.

It's comfortable for a long swim from May 25 to Dec 3 — about 6.3 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar16Cool
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov21Refreshing
Dec19Cool

UV index in Uwajima in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Uwajima peaks around June 22 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 22UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Uwajima 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 Uwajima is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1420 µg/m³Oct 1410 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar19Moderate
Apr20Moderate
May18Moderate
Jun15Moderate
Jul11Good
Aug11Good
Sep10Good
Oct10Good
Nov11Good
Dec10Good
Location & terrain

Where is Uwajima?

Uwajima sits at 33.2°N, 132.6°E, 6 m above sea level, in Japan. The nearest listed city is Uwa, 16 km away.

Topography around Uwajima

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Uwajima.

Within 3 km, the terrain around Uwajima has significant variations in elevation — a maximum elevation change of 528 m around an average of 81 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,219 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,895 m.

The land around Uwajima is covered by trees (64%) and artificial surfaces (22%) within 3 km, trees (70%) and water (23%) within 16 km, and water (59%) and trees (39%) within 80 km.

3 km
528 m
16 km
1,219 m
80 km
1,895 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Uwa 16 km · Yawatahama 29 km · Mishōhirajō 29 km · Ōzu 31 km · Sukumo 36 km · Uchiko 37 km · Nakamura 44 km · Shimoda 50 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Uwajima (33.2238°, 132.56°, elevation 6 m), 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).