Komatsushimachō weather in December

In December, Komatsushimachō sees average daytime highs of 11°C and overnight lows near 6°C, with 81 mm of precipitation across 7 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 13°C in the first days to 10°C by the end. The sky is clear or mostly clear about 44% 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 Komatsushimachō's 1st-clearest and 3rd-windiest month. For the whole year in context, see Komatsushimachō's year-round climate.

Daytime high
11°
10th warmest
Overnight low
3rd coldest
Precipitation
81 mm
7 wet days
Daylight
9 h 42 min
7:05 AM – 4:50 PM
Cloud cover
48%
1st clearest
Wind
14 km/h
3rd windiest
Solar energy
2.51 kWh/m²
Travel score
3.2
out of 10

Komatsushimachō is city in Tokushima Prefecture, Japan.

Density
797/km²
people per km²
Founded
1951

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 13°C in the first days to 10°C by the end.

A typical December day in Komatsushimachō reaches about 11°C in the afternoon and slips back to 6°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 15°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1148
2138
3138
4137
5137
6137
7127
8127
9127
10127
11126
12126
13116
14116
15116
16116
17116
18116
19116
20115
21115
22115
23105
24105
25105
26105
27105
28105
29105
30105
31105

How December really feels in Komatsushimachō

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.

Komatsushimachō 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 / 717.31.1101.9
Feb10° / 798.41.310.72.2
Mar13° / 12811.60.211.73.5
Apr17° / 11°15111.3012.85.3
May21° / 15°19112.9013.76.0
Jun24° / 19°27716.8014.25.4
Jul28° / 23°26117.80144.9
Aug29° / 24°20416013.34.8
Sep26° / 21°28615.5012.25.8
Oct21° / 16°23111.7011.16.4
Nov16° / 11°1058.2010.25.4
Dec11° / 8170.19.83.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26238
36238
46238
56337
66337
76337
86436
96535
106535
116535
126535
136436
146436
156535
166535
176436
186535
196535
206634
216634
226733
236733
246832
256832
266832
276931
286931
296931
306931
316931

Chance of precipitation in December

Any precipitation

Komatsushimachō gets around 81 mm of rain and snow over 7 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 22% and peaks near 27% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
127
226
326
426
525
625
724
824
923
1023
1123
1222
1322
1422
1521
1621
1721
1821
1920
2020
2120
2220
2320
2420
2520
2619
2719
2819
2918
3018
3118

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 (%)Humid (%)
19631
29721
39721
49721
59721
69820
79820
89820
99820
109910
119910
129910
139910
149910
159910
169910
179910
189910
1910000
2010000
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000
3110000

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light 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
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

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 6:54 AM to 7:12 AM, and sunset from 4:48 PM to 4:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.96:544:48
29.96:554:48
39.96:564:48
49.96:574:48
59.86:584:48
69.86:584:48
79.86:594:48
89.87:004:48
99.87:014:49
109.87:014:49
119.87:024:49
129.87:034:49
139.87:044:49
149.87:044:50
159.87:054:50
169.77:054:50
179.77:064:51
189.77:074:51
199.77:074:51
209.77:084:52
219.77:084:52
229.77:094:53
239.77:094:53
249.77:104:54
259.77:104:54
269.77:104:55
279.77:114:55
289.77:114:56
299.87:114:56
309.87:124:57
319.87:124:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.51 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.51 kWh/m² to a high of 5.5 kWh/m² in May across the year — December's 2.51 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.5Moderate
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.5Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.6Moderate
252.6Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.7Moderate
Planning a trip in December

Hazard calendar for Komatsushimachō

In seasonPeak

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

Komatsushimachō 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 Komatsushimachō?

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

3.2
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 Komatsushimachō.

What to pack for Komatsushimachō in December

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

In December, Komatsushimachō sees daytime highs around 11°C and nights near 6°C. Pack a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Komatsushimachō in December

The nearest coast averages about 17°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 14 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from Jun 5 to Nov 19 — about 5.5 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar14Bracing
Apr16Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov20Refreshing
Dec17Cool

UV index in Komatsushimachō 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 Komatsushimachō peaks around July 11 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 highModerateJul 11UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Komatsushimachō 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 Komatsushimachō is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (September, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1320 µg/m³Sep 2010 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar19Moderate
Apr20Moderate
May18Moderate
Jun15Moderate
Jul11Good
Aug11Good
Sep10Good
Oct10Good
Nov11Good
Dec11Good
Location & terrain

Where is Komatsushimachō?

Komatsushimachō sits at 34.0°N, 134.6°E, 3 m above sea level, in Japan. The nearest listed city is Tokushima, 8.0 km away.

Topography around Komatsushimachō

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

Within 3 km, the terrain around Komatsushimachō has significant variations in elevation — a maximum elevation change of 275 m around an average of 29 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 968 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,909 m.

The land around Komatsushimachō is covered by trees (33%), artificial surfaces (27%) and water (20%) within 3 km, trees (38%) and water (34%) within 16 km, and water (51%) and trees (41%) within 80 km.

3 km
275 m
16 km
968 m
80 km
1,909 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Tokushima 8.0 km · Anan 11 km · Takabō 15 km · Ishii 15 km · Yakami 17 km · Narutochō-mitsuishi 22 km · Kamojimachō-jōgejima 23 km · Yoshinogawa 27 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 Komatsushimachō (34°, 134.5833°, elevation 3 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).