Nagato weather in January

In January, Nagato sees average daytime highs of 9°C and overnight lows near 4°C, with 73 mm of precipitation across 11.8 wet days and about 10 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 9°C through the month. The sky is clear or mostly clear about 13% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 42 min at the start of January to 10 h 18 min by month's end. Set against the rest of the year, January is Nagato's 10th-clearest and 1st-windiest month. For the whole year in context, see Nagato's year-round climate.

Daytime high
12th warmest
Overnight low
1st coldest
Precipitation
73 mm
11.8 wet days
Daylight
9 h 54 min
7:26 AM – 5:23 PM
Cloud cover
68%
10th clearest
Wind
16 km/h
1st windiest
Solar energy
2.34 kWh/m²
Travel score
1.8
out of 10

Nagato is city in Yamaguchi Prefecture, Japan.

Density
91/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 9°C through the month.

A typical January day in Nagato reaches about 9°C in the afternoon and slips back to 4°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 5°C and 13°C. Set against its neighbours, January runs about 3°C cooler than December and about 1°C cooler than February.

10°15°151015202531
Avg high (°C)Avg low (°C)
1105
2105
3105
4105
5105
6105
7105
8105
994
1094
1194
1294
1394
1494
1594
1694
1794
1894
1994
2094
2194
2294
2394
2494
2594
2694
2794
2894
2994
3094
3194

How January really feels in Nagato

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 7 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
7
wind chill below the day's low

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

Nagato weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7311.81.8101.8
Feb10° / 7210.81.210.72.2
Mar13° / 11611.60.311.73.6
Apr18° / 11°11510.3012.85.7
May22° / 15°12810.1013.86.7
Jun25° / 20°21613.2014.36.0
Jul29° / 24°26014.6014.14.8
Aug31° / 25°17212.6013.34.3
Sep27° / 21°18212.2012.26.0
Oct22° / 16°967.9011.17.1
Nov17° / 11°859.2010.25.5
Dec12° / 7311.10.69.72.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 22% of January, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
34060
44060
53961
64060
73961
83862
93862
103862
113763
123664
133565
143565
153466
163466
173367
183268
193268
203268
213169
223169
233268
243268
253367
263367
273367
283367
293466
303565
313565

Chance of precipitation in January

Any precipitationSnow

Nagato gets around 73 mm of rain and snow over 11.8 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 41% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1344
2345
3345
4355
5355
6355
7355
8365
9365
10375
11375
12385
13395
14395
15406
16406
17416
18416
19416
20416
21417
22417
23417
24417
25417
26417
27407
28407
29407
30397
31397

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 16 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 42 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 36 minutes over January. Sunrise moves from 7:26 AM to 7:20 AM, and sunset from 5:10 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.77:265:10
29.77:265:11
39.87:275:12
49.87:275:13
59.87:275:13
69.87:275:14
79.87:275:15
89.87:275:16
99.87:275:17
109.87:275:17
119.97:275:18
129.97:275:19
139.97:275:20
149.97:275:21
159.97:275:22
169.97:265:23
1710.07:265:23
1810.07:265:24
1910.07:265:25
2010.07:255:26
2110.07:255:27
2210.17:255:28
2310.17:245:29
2410.17:245:30
2510.17:235:31
2610.17:235:32
2710.27:225:33
2810.27:225:34
2910.27:215:35
3010.37:215:36
3110.37:205:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.34 kWh/m².

For context, solar energy here swings from a low near 2.11 kWh/m² to a high of 5.71 kWh/m² in May across the year — January's 2.34 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.2Moderate
22.2Moderate
32.2Moderate
42.2Moderate
52.2Moderate
62.2Moderate
72.2Moderate
82.2Moderate
92.2Moderate
102.2Moderate
112.2Moderate
122.2Moderate
132.2Moderate
142.3Moderate
152.3Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.7Moderate
Planning a trip in January

Hazard calendar for Nagato

In seasonPeak

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

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

Nagato's rainy season runs May–September, when most of the year's rain falls.

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

Is January a good time to visit Nagato?

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

1.8
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 Nagato.

What to pack for Nagato in January

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

In January, Nagato sees daytime highs around 9°C and nights near 4°C. Pack a warm layer. Worth having: rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near Nagato in January

The nearest coast averages about 16°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 28 km away) is warmest in August at about 27°C and coldest in March near 14°C.

It's comfortable for a long swim from Jun 9 to Nov 21 — about 5.5 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Nagato in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nagato peaks around June 21 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 21UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Nagato 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 Nagato 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 1023 µg/m³Oct 1111 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr23Moderate
May20Moderate
Jun16Moderate
Jul13Moderate
Aug15Moderate
Sep11Good
Oct11Good
Nov13Moderate
Dec12Moderate
Location & terrain

Where is Nagato?

Nagato sits at 34.4°N, 131.2°E, 4 m above sea level, in Japan. The nearest listed city is Hagi, 20 km away.

Topography around Nagato

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

Within 3 km, the terrain around Nagato has significant variations in elevation — a maximum elevation change of 309 m around an average of 28 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 684 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,369 m.

The land around Nagato is covered by water (45%) and trees (33%) within 3 km, trees (52%) and water (42%) within 16 km, and water (60%) and trees (34%) within 80 km.

3 km
309 m
16 km
684 m
80 km
1,369 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Hagi 20 km · Mine 22 km · Yamaguchi 33 km · Ogōri-shimogō 36 km · Sanyōonoda 39 km · Onoda 42 km · Ube 49 km · Hōfu 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 Nagato (34.3833°, 131.2°, elevation 4 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).