Shikokuchūō weather in December

In December, Shikokuchūō sees average daytime highs of 10°C and overnight lows near 5°C, with 93 mm of precipitation across 12.5 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 12°C in the first days to 8°C by the end. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of December to 9 h 48 min by month's end. Set against the rest of the year, December is Shikokuchūō's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Shikokuchūō's year-round climate.

Daytime high
10°
10th warmest
Overnight low
3rd coldest
Precipitation
93 mm
12.5 wet days
Daylight
9 h 42 min
7:10 AM – 4:54 PM
Cloud cover
57%
3rd clearest
Wind
11 km/h
2nd windiest
Solar energy
2.36 kWh/m²
Travel score
2.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 12°C in the first days to 8°C by the end.

A typical December day in Shikokuchūō reaches about 10°C in the afternoon and slips back to 5°C overnight — a 5°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, December runs about 5°C cooler than November and about 3°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1127
2126
3126
4126
5116
6116
7116
8115
9115
10115
11105
12105
13105
14105
15105
16104
17104
1894
1994
2094
2194
2294
2394
2494
2594
2694
2793
2893
2983
3083
3183

How December really feels in Shikokuchūō

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

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

Shikokuchūō weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 8013.73.6101.0
Feb / 8811.93.610.71.3
Mar12° / 12813.41.511.72.8
Apr16° / 10°14211.90.112.84.9
May21° / 14°17012.1013.76.1
Jun24° / 19°26816.3014.25.5
Jul27° / 23°26517.60145.0
Aug29° / 24°18216.6013.34.8
Sep26° / 20°24915.6012.25.8
Oct20° / 15°18911.9011.16.2
Nov15° / 9810.30.110.24.6
Dec10° / 9312.529.82.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 29% of December, with mostly cloudy or overcast conditions the remaining 47%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35347
45347
55347
65248
75248
85149
95149
105149
115149
125050
135050
145149
155149
165149
175248
185248
195248
205248
215347
225446
235545
245545
255644
265743
275743
285743
295842
305743
315644

Chance of precipitation in December

Any precipitationSnow

Shikokuchūō gets around 93 mm of rain and snow over 12.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 40% 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 (%)
1383
2383
3383
4383
5383
6393
7393
8394
9394
10404
11404
12404
13404
14405
15405
16405
17405
18406
19406
20417
21417
22418
23418
24418
25419
26419
27409
28409
29409
30409
31409

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December 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 (%)
1982
2982
3991
4991
5991
6991
7991
8991
9991
10991
11991
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 12 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
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 54 min at the start of December to 9 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:59 AM to 7:16 AM, and sunset from 4:53 PM to 5:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.96:594:53
29.96:594:53
39.97:004:52
49.97:014:52
59.87:024:52
69.87:034:53
79.87:034:53
89.87:044:53
99.87:054:53
109.87:064:53
119.87:064:53
129.87:074:53
139.87:084:54
149.87:084:54
159.87:094:54
169.77:104:54
179.77:104:55
189.77:114:55
199.77:114:56
209.77:124:56
219.77:124:56
229.77:134:57
239.77:134:57
249.77:144:58
259.77:144:58
269.77:144:59
279.77:154:59
289.77:155:00
299.87:155:01
309.87:165:01
319.87:165:02

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.36 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 5.59 kWh/m² in May across the year — December's 2.36 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.4Moderate
32.4Moderate
42.4Moderate
52.4Moderate
62.4Moderate
72.4Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.3Moderate
122.3Moderate
132.3Moderate
142.3Moderate
152.3Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.4Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.5Moderate
Planning a trip in December

Hazard calendar for Shikokuchūō

In seasonPeak

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

Shikokuchūō 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 December a good time to visit Shikokuchūō?

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

2.1
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Shikokuchūō.

What to pack for Shikokuchūō in December

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

In December, Shikokuchūō sees daytime highs around 10°C and nights near 5°C. Pack a warm layer. Worth having: rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Shikokuchūō in December

The nearest coast averages about 16°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 12 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct24Refreshing
Nov20Cool
Dec16Cool

UV index in Shikokuchūō in December

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Shikokuchūō peaks around July 11 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 — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 11UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Shikokuchūō in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Shikokuchūō is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1321 µg/m³Oct 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr22Moderate
May19Moderate
Jun16Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Shikokuchūō?

Shikokuchūō sits at 34.0°N, 133.5°E, 41 m above sea level, in Japan. The nearest listed city is Kawanoechō, 5.0 km away.

Topography around Shikokuchūō

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

Within 3 km, the terrain around Shikokuchūō has large variations in elevation — a maximum elevation change of 807 m around an average of 163 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,641 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,946 m.

The land around Shikokuchūō is covered by trees (40%) and artificial surfaces (40%) within 3 km, trees (59%) and water (33%) within 16 km, and trees (60%) and water (29%) within 80 km.

3 km
807 m
16 km
1,641 m
80 km
1,946 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Kawanoechō 5.0 km · Kan’onjichō 19 km · Niihama 23 km · Ikedachō 24 km · Mitoyo 29 km · Saijō 34 km · Shioiri 34 km · Zentsujichó 35 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 Shikokuchūō (33.9754°, 133.5489°, elevation 41 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).