Yomitan weather in December

In December, Yomitan sees average daytime highs of 21°C and overnight lows near 19°C, with 110 mm of rain across 11.3 wet days and about 10.4 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 21% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of December to 10 h 24 min by month's end. Set against the rest of the year, December is Yomitan's 8th-clearest and 1st-windiest month. For the whole year in context, see Yomitan's year-round climate.

Daytime high
21°
9th warmest
Overnight low
19°
4th coldest
Rainfall
110 mm
11.3 wet days
Daylight
10 h 24 min
7:15 AM – 5:36 PM
Cloud cover
68%
8th clearest
Wind
28 km/h
1st windiest
Solar energy
2.35 kWh/m²
Travel score
6.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 19°C by the end.

A typical December day in Yomitan reaches about 21°C in the afternoon and slips back to 19°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 23°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12220
22220
32220
42220
52220
62120
72120
82119
92119
102119
112119
122119
132119
142119
152119
162019
172019
182018
192018
202018
212018
222018
232018
242018
252018
262018
272018
282018
292018
301918
311917

How December really feels in Yomitan

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.

Yomitan weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 17°1031210.55.6
Feb19° / 17°9911.711.15.5
Mar20° / 18°13413.211.85.8
Apr22° / 20°15813.212.66.0
May24° / 23°20714.113.36.1
Jun27° / 26°22415.513.65.4
Jul28° / 27°12410.913.55.6
Aug29° / 27°17514.412.95.2
Sep28° / 27°18813.412.25.8
Oct26° / 25°13911.811.46.5
Nov23° / 22°10010.710.76.7
Dec21° / 19°11011.310.46.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24159
34159
44060
53961
64060
74060
83961
93961
103961
113862
123862
133862
143961
153961
164060
174060
184159
194159
204159
214060
223961
233961
243961
253961
263961
273862
283763
293664
303664
313466

Chance of precipitation in December

Any precipitation

Yomitan gets around 110 mm of rain over 11.3 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
435
535
635
735
835
936
1036
1136
1236
1336
1437
1537
1637
1737
1837
1937
2037
2137
2237
2337
2437
2537
2637
2737
2837
2937
3037
3137

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1282626183
2292625173
3312724163
4322723153
5332823142
6352922132
7362921122
8373020112
9383020102
10393019101
1140301991
1241311891
1342301891
1443301891
1543301880
1644301780
1746291780
1847281780
1948281770
2050271670
2151261670
2253251660
2355241560
2456231560
2558231450
2659221450
2759221450
2861221340
2961221340
3062221330
3162221330

Wind in December

Winds average 28 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 27 km/h on the calmest days to 29 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
129breezy
229breezy
329breezy
429breezy
529breezy
628breezy
728breezy
828breezy
928breezy
1028breezy
1128breezy
1228breezy
1328breezy
1428breezy
1528breezy
1628breezy
1728breezy
1828breezy
1928breezy
2028breezy
2128breezy
2228breezy
2328breezy
2427breezy
2527breezy
2627breezy
2727breezy
2827breezy
2927breezy
3027breezy
3127breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 30 min at the start of December to 10 h 24 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 7:05 AM to 7:21 AM, and sunset from 5:33 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.57:055:33
210.57:065:33
310.47:065:33
410.47:075:33
510.47:085:33
610.47:085:33
710.47:095:33
810.47:105:34
910.47:105:34
1010.47:115:34
1110.47:125:34
1210.47:125:34
1310.47:135:35
1410.47:135:35
1510.47:145:35
1610.47:155:36
1710.37:155:36
1810.37:165:37
1910.37:165:37
2010.37:175:37
2110.37:175:38
2210.37:185:38
2310.37:185:39
2410.37:195:39
2510.37:195:40
2610.37:195:40
2710.37:205:41
2810.47:205:41
2910.47:215:42
3010.47:215:43
3110.47:215:43

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.35 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 6.42 kWh/m² in July across the year — December's 2.35 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.4Moderate
162.3Moderate
172.3Moderate
182.3Moderate
192.3Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.4Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.4Moderate
Planning a trip in December

Hazard calendar for Yomitan

In seasonPeak

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

Yomitan 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 Yomitan?

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

6.1
Sightseeing
3rd-best month of the year
3.5
Beach & pool
9th-best month of the year

December is a reasonable time to visit Yomitan for sightseeing.

What to pack for Yomitan in December

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

In December, Yomitan sees daytime highs around 21°C and nights near 19°C. Pack a windbreaker. Worth having: rain gear. About 11 days see rain.

a windbreakerrain gear

Sea temperature near Yomitan in December

The nearest coast averages about 24°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 29°C and coldest in February near 22°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar22Refreshing
Apr23Refreshing
May25Warm
Jun27Warm
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov25Warm
Dec24Refreshing

UV index in Yomitan in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yomitan peaks around July 11 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 11UV 11Dec 23UV 5
UV index (midday)Level
Jan5High
Feb7Very high
Mar9Very high
Apr8Very high
May10Very high
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep11Extreme
Oct8Very high
Nov7High
Dec5Moderate

Air quality in Yomitan 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 Yomitan is worst in March — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 2017 µg/m³Jul 128 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb14Moderate
Mar17Moderate
Apr16Moderate
May13Moderate
Jun9Good
Jul8Good
Aug10Good
Sep9Good
Oct9Good
Nov10Good
Dec10Good
Location & terrain

Where is Yomitan?

Yomitan sits at 26.4°N, 127.7°E, 71 m above sea level, in Japan. The nearest listed city is Ishikawa, 8.0 km away.

Topography around Yomitan

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

Within 3 km, the terrain around Yomitan has only modest variations in elevation — a maximum elevation change of 123 m around an average of 49 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 358 m; within 80 km, significant variations in elevation — a maximum elevation change of 491 m.

The land around Yomitan is covered by trees (51%) and artificial surfaces (24%) within 3 km, water (69%) within 16 km, and water (92%) within 80 km.

3 km
123 m
16 km
358 m
80 km
491 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Ishikawa 8.0 km · Okinawa 9.0 km · Chatan 11 km · Uruma 12 km · Kishaba 12 km · Gushikawa 13 km · Katsuren-haebaru 15 km · Ginowan 16 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 Yomitan (26.4017°, 127.745°, elevation 71 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).