Sashiki weather in January

In January, Sashiki sees average daytime highs of 10°C and overnight lows near 3°C, with 78 mm of precipitation across 10 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 23% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of January to 10 h 24 min by month's end. Set against the rest of the year, January is Sashiki's 7th-clearest and 1st-windiest month. For the whole year in context, see Sashiki's year-round climate.

Daytime high
10°
12th warmest
Overnight low
1st coldest
Precipitation
78 mm
10 wet days
Daylight
10 h 06 min
7:24 AM – 5:30 PM
Cloud cover
62%
7th clearest
Wind
10 km/h
1st windiest
Solar energy
2.54 kWh/m²
Travel score
2.4
out of 10

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 Sashiki 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°20°151015202531
Avg high (°C)Avg low (°C)
1113
2113
3113
4113
5113
6113
7113
8113
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 Sashiki

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 9 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
9
wind chill below the day's low

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

Sashiki 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° / 7810110.12.4
Feb12° / 9810.10.510.83.0
Mar15° / 14013.10.111.84.4
Apr20° / 11°16512012.85.8
May24° / 16°18912.2013.66.4
Jun26° / 20°48218.9014.14.9
Jul30° / 24°37019.4013.93.9
Aug31° / 24°17616.4013.23.8
Sep28° / 21°18113.5012.25.3
Oct24° / 15°1058.6011.27.2
Nov18° / 10°1038.9010.36.0
Dec13° / 878.90.49.93.6

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 19% of January, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24753
34753
44654
54555
64555
74456
84258
94258
104159
114159
123961
133961
143961
154060
164060
173961
183961
193961
203961
213961
224060
234159
244159
254159
264159
274159
284258
294258
304258
314357

Chance of precipitation in January

Any precipitationSnow

Sashiki gets around 78 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 32% and peaks near 34% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1303
2303
3303
4303
5303
6303
7303
8313
9313
10313
11323
12323
13333
14333
15333
16343
17343
18343
19343
20344
21344
22344
23344
24344
25344
26344
27344
28334
29334
30333
31333

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 (%)
1991
2991
31000
41000
51000
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
31991

Wind in January

Winds average 10 km/h in January, the windiest month of the year.

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

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

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 54 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 30 minutes over January. Sunrise moves from 7:24 AM to 7:19 AM, and sunset from 5:19 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:245:19
29.97:245:19
39.97:245:20
49.97:245:21
59.97:245:21
610.07:255:22
710.07:255:23
810.07:255:24
910.07:255:24
1010.07:255:25
1110.07:255:26
1210.07:255:27
1310.07:255:28
1410.17:255:28
1510.17:255:29
1610.17:245:30
1710.17:245:31
1810.17:245:32
1910.27:245:33
2010.27:245:34
2110.27:235:35
2210.27:235:35
2310.27:235:36
2410.27:225:37
2510.37:225:38
2610.37:215:39
2710.37:215:40
2810.37:215:41
2910.47:205:42
3010.47:205:43
3110.47:195:44

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.54 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.1 kWh/m² in May across the year — January's 2.54 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.5Moderate
52.4Moderate
62.4Moderate
72.4Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.5Moderate
152.5Moderate
162.5Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.6Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.9Moderate
Planning a trip in January

Hazard calendar for Sashiki

In seasonPeak

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

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

Sashiki's rainy season runs June–July, 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 Sashiki?

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

2.4
Sightseeing
12th-best month of the year
0.0
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Sashiki.

What to pack for Sashiki in January

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

In January, Sashiki 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 Sashiki 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 23 km away) is warmest in August at about 28°C and coldest in February near 16°C.

It's comfortable for a long swim from May 16 to Dec 4 — about 6.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar17Cool
Apr18Cool
May20Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct24Warm
Nov22Refreshing
Dec19Cool

UV index in Sashiki 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 Sashiki peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 12UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Sashiki 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 Sashiki is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Sashiki?

Sashiki sits at 32.3°N, 130.5°E, 25 m above sea level, in Japan. The nearest listed city is Minamata, 14 km away.

Topography around Sashiki

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

Within 3 km, the terrain around Sashiki has significant variations in elevation — a maximum elevation change of 365 m around an average of 104 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 935 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,718 m.

The land around Sashiki is covered by trees (77%) within 3 km, trees (61%) and water (34%) within 16 km, and trees (56%) and water (34%) within 80 km.

3 km
365 m
16 km
935 m
80 km
1,718 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Minamata 14 km · Honmachi 24 km · Hitoyoshi 25 km · Izumi 27 km · Isa 28 km · Ōkuchi-shinohara 28 km · Ōyanomachi-noboritate 33 km · Amakusa 34 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 Sashiki (32.3017°, 130.5038°, elevation 25 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).