Yakami weather in December

In December, Yakami sees average daytime highs of 12°C and overnight lows near 7°C, with 69 mm of precipitation across 9 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 36% 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 Yakami's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Yakami's year-round climate.

Daytime high
12°
10th warmest
Overnight low
4th coldest
Precipitation
69 mm
9 wet days
Daylight
9 h 42 min
7:06 AM – 4:50 PM
Cloud cover
52%
3rd clearest
Wind
17 km/h
2nd windiest
Solar energy
2.49 kWh/m²
Travel score
3.2
out of 10

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 Yakami reaches about 12°C in the afternoon and slips back to 7°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 15°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)
1149
2149
3149
4138
5138
6138
7138
8138
9128
10127
11127
12127
13127
14127
15127
16117
17117
18117
19116
20116
21116
22116
23116
24116
25116
26116
27106
28106
29106
30106
31106

How December really feels in Yakami

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.

Yakami 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 / 639.50.6102.0
Feb10° / 699.7110.72.2
Mar13° / 10511.3011.73.6
Apr17° / 11°11710.1012.85.6
May21° / 16°14310.4013.86.4
Jun24° / 20°21113.6014.25.9
Jul28° / 24°20313.50145.3
Aug30° / 25°12710.5013.35.1
Sep27° / 22°20912.5012.26.1
Oct22° / 17°17810.1011.16.7
Nov17° / 12°837.8010.25.6
Dec12° / 6990.19.83.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
55941
65941
76040
86040
96040
106040
116040
125941
135941
145941
155941
165941
175941
185941
195941
205941
216040
225941
236040
246139
256040
266139
276040
286040
296139
306139
316139

Chance of precipitation in December

Any precipitation

Yakami gets around 69 mm of rain and snow over 9 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 28% and peaks near 29% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
127
228
328
428
528
628
728
828
928
1028
1128
1228
1328
1428
1528
1628
1728
1828
1928
2029
2129
2229
2329
2429
2529
2628
2728
2828
2927
3027
3127

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
29631
39631
49721
59820
69820
79820
89820
99820
109820
119910
129910
139910
149910
159910
169910
179910
189910
199910
209910
219910
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000
3110000

Wind in December

Winds average 17 km/h in December.

Across December, daily wind ranges from about 15 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2818light breeze
2918light breeze
3018light breeze
3118light 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 6:55 AM to 7:13 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)
19.96:554:48
29.96:564:48
39.96:574:48
49.86:584:48
59.86:584:48
69.86:594:48
79.87:004:48
89.87:014:48
99.87:014:49
109.87:024:49
119.87:034:49
129.87:044:49
139.87:044:49
149.77:054:50
159.77:064:50
169.77:064:50
179.77:074:51
189.77:074:51
199.77:084:51
209.77:084:52
219.77:094:52
229.77:094:53
239.77:104:53
249.77:104:54
259.77:114:54
269.77:114:55
279.77:114:55
289.77:124:56
299.77:124:56
309.77:124:57
319.87:134:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.49 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.49 kWh/m² to a high of 5.56 kWh/m² in May across the year — December's 2.49 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
242.5Moderate
252.5Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Yakami

In seasonPeak

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

Yakami 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 Yakami?

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 Yakami.

What to pack for Yakami in December

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

In December, Yakami sees daytime highs around 12°C and nights near 7°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Yakami 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 offshore 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 Yakami 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 Yakami 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 Yakami 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 Yakami is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1422 µg/m³Oct 1613 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Yakami?

Yakami sits at 34.1°N, 134.5°E, 6 m above sea level, in Japan. The nearest listed city is Takabō, 3.0 km away.

Topography around Yakami

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

Within 3 km, the terrain around Yakami has only modest variations in elevation — a maximum elevation change of 184 m around an average of 13 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 695 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,910 m.

The land around Yakami is covered by artificial surfaces (47%) and cropland (27%) within 3 km, trees (37%) and water (30%) within 16 km, and water (48%) and trees (41%) within 80 km.

3 km
184 m
16 km
695 m
80 km
1,910 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Takabō 3.0 km · Ishii 10 km · Tokushima 10 km · Narutochō-mitsuishi 12 km · Kamojimachō-jōgejima 16 km · Komatsushimachō 17 km · Higashikagawa 17 km · Awa 21 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 Yakami (34.1385°, 134.5018°, elevation 6 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).