Ōzu weather in January

In January, Ōzu sees average daytime highs of 10°C and overnight lows near 3°C, with 63 mm of precipitation across 10 wet days and about 10 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 23% 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 18 min by month's end. Set against the rest of the year, January is Ōzu's 9th-clearest and 1st-windiest month. For the whole year in context, see Ōzu's year-round climate.

Daytime high
10°
12th warmest
Overnight low
1st coldest
Precipitation
63 mm
10 wet days
Daylight
10 hours
7:19 AM – 5:19 PM
Cloud cover
61%
9th clearest
Wind
11 km/h
1st windiest
Solar energy
2.69 kWh/m²
Travel score
2.2
out of 10

Ōzu is city in Ehime Prefecture, Japan.

Density
94/km²
people per km²
Founded
1954

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 Ōzu reaches about 10°C in the afternoon and slips back to 3°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.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1113
2113
3113
4113
5103
6103
7103
8103
9103
10103
11103
12103
13103
14103
15103
16103
17103
18103
19103
20103
21103
22103
23103
24103
25103
26103
27103
28103
29103
30103
31103

How January really feels in Ōzu

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 22 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
22
wind chill below the day's low

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

Ōzu 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° / 63101.4102.2
Feb11° / 749.81.310.82.7
Mar15° / 11311.90.211.74.2
Apr20° / 11°12510.6012.86.1
May24° / 15°14610.8013.76.7
Jun27° / 19°26314.9014.25.5
Jul30° / 24°21014.90144.1
Aug32° / 24°13112.7013.23.7
Sep29° / 21°17212.7012.25.3
Oct23° / 15°1388.4011.27.2
Nov18° / 818.5010.36.0
Dec12° / 7810.30.69.83.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% 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 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35248
45149
55050
65149
75050
84852
94852
104852
114654
124753
134654
144654
154555
164555
174456
184357
194357
204357
214258
224258
234258
244258
254357
264357
274357
284456
294456
304456
314555

Chance of precipitation in January

Any precipitationSnow

Ōzu gets around 63 mm of rain and snow over 10 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 33% and peaks near 36% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1304
2304
3304
4304
5294
6294
7294
8304
9304
10304
11314
12314
13324
14324
15334
16345
17345
18355
19355
20365
21365
22365
23365
24366
25366
26366
27366
28356
29356
30346
31346

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 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 January

Winds average 11 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 48 min at the start of January to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over January. Sunrise moves from 7:19 AM to 7:13 AM, and sunset from 5:07 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:195:07
29.87:195:08
39.87:195:09
49.87:195:09
59.97:195:10
69.97:195:11
79.97:195:12
89.97:195:13
99.97:205:13
109.97:205:14
119.97:195:15
129.97:195:16
1310.07:195:17
1410.07:195:18
1510.07:195:18
1610.07:195:19
1710.07:195:20
1810.07:185:21
1910.17:185:22
2010.17:185:23
2110.17:185:24
2210.17:175:25
2310.17:175:26
2410.27:175:27
2510.27:165:27
2610.27:165:28
2710.27:155:29
2810.37:155:30
2910.37:145:31
3010.37:145:32
3110.37:135:33

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.69 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.5 kWh/m² in May across the year — January's 2.69 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.5Moderate
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
172.6Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.9Moderate
272.9Moderate
282.9Moderate
293.0Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Hazard calendar for Ōzu

In seasonPeak

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

Ōzu 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 Ōzu?

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

2.2
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 Ōzu.

What to pack for Ōzu in January

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

In January, Ōzu sees daytime highs around 10°C and nights near 3°C. Pack a warm layer. Worth having: rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Ōzu in January

The nearest coast averages about 15°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 16 km away) is warmest in August at about 26°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 11 to Nov 19 — about 5.3 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr15Cool
May17Cool
Jun21Refreshing
Jul24Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Ōzu 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 Ōzu peaks around June 23 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 23UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Extreme
Jul10Very high
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Ōzu 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 Ōzu is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1523 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun19Moderate
Jul15Moderate
Aug15Moderate
Sep12Moderate
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Ōzu?

Ōzu sits at 33.5°N, 132.6°E, 27 m above sea level, in Japan. The nearest listed city is Uchiko, 11 km away.

Topography around Ōzu

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

Within 3 km, the terrain around Ōzu has significant variations in elevation — a maximum elevation change of 393 m around an average of 101 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 971 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,895 m.

The land around Ōzu is covered by trees (75%) within 3 km, trees (85%) within 16 km, and water (52%) and trees (45%) within 80 km.

3 km
393 m
16 km
971 m
80 km
1,895 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Uchiko 11 km · Yawatahama 12 km · Uwa 15 km · Uwajima 31 km · Iyo 31 km · Masaki-chō 35 km · Haramachi 37 km · Matsuyama 43 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 Ōzu (33.5°, 132.55°, elevation 27 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).