Nakatsu weather in December

In December, Nakatsu sees average daytime highs of 11°C and overnight lows near 5°C, with 61 mm of precipitation across 8.5 wet days and about 9.8 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 13°C in the first days to 9°C by the end. The sky is clear or mostly clear about 28% 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 Nakatsu's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Nakatsu's year-round climate.

Daytime high
11°
10th warmest
Overnight low
3rd coldest
Precipitation
61 mm
8.5 wet days
Daylight
9 h 48 min
7:18 AM – 5:05 PM
Cloud cover
57%
3rd clearest
Wind
10 km/h
2nd windiest
Solar energy
2.25 kWh/m²
Travel score
2.8
out of 10

Nakatsu is city in Oita prefecture, Japan.

Density
172/km²
people per km²
Founded
1929

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 9°C by the end.

A typical December day in Nakatsu reaches about 11°C in the afternoon and slips back to 5°C overnight — a 6°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 3°C warmer than January.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
1137
2137
3137
4137
5127
6126
7126
8126
9126
10126
11116
12115
13115
14115
15115
16115
17115
18105
19105
20105
21104
22104
23104
24104
25104
26104
27104
28104
29104
3094
3194

How December really feels in Nakatsu

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.

Nakatsu weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 618.42101.6
Feb / 7091.910.82.0
Mar13° / 11211.50.611.73.5
Apr18° / 11°12510.7012.85.7
May23° / 16°14311013.76.5
Jun26° / 20°28215.4014.25.6
Jul30° / 24°22116.10144.3
Aug30° / 25°14414.5013.24.3
Sep27° / 21°16713.1012.25.9
Oct22° / 16°1118.1011.27.0
Nov16° / 10°758.1010.35.4
Dec11° / 618.50.79.82.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35347
45248
55149
65050
75050
85050
95050
104852
114951
124951
134951
144951
154852
164852
174951
184852
194852
204852
214852
224852
234951
244951
254951
264951
274951
284951
294852
304852
314852

Chance of precipitation in December

Any precipitationSnow

Nakatsu gets around 61 mm of rain and snow over 8.5 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 27% and peaks near 29% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1280
2290
3291
4291
5291
6291
7291
8291
9291
10292
11282
12282
13282
14282
15282
16272
17272
18272
19273
20263
21263
22263
23263
24263
25254
26254
27254
28244
29245
30245
31245

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 (%)
1973
2973
3982
4982
5982
6991
7991
8991
9991
101000
111000
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 10 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 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
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 7:07 AM to 7:24 AM, and sunset from 5:03 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.97:075:03
29.97:085:03
39.97:095:03
49.97:095:03
59.97:105:03
69.97:115:03
79.97:125:03
89.87:135:03
99.87:135:03
109.87:145:03
119.87:155:04
129.87:155:04
139.87:165:04
149.87:175:04
159.87:175:05
169.87:185:05
179.87:195:05
189.87:195:06
199.87:205:06
209.87:205:06
219.87:215:07
229.87:215:07
239.87:225:08
249.87:225:08
259.87:225:09
269.87:235:09
279.87:235:10
289.87:245:10
299.87:245:11
309.87:245:12
319.87:245:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.25 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 5.34 kWh/m² in May across the year — December's 2.25 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.3Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.3Moderate
72.3Moderate
82.3Moderate
92.3Moderate
102.2Moderate
112.2Moderate
122.2Moderate
132.2Moderate
142.2Moderate
152.2Moderate
162.2Moderate
172.2Moderate
182.2Moderate
192.2Moderate
202.2Moderate
212.3Moderate
222.3Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.4Moderate
312.4Moderate
Planning a trip in December

Hazard calendar for Nakatsu

In seasonPeak

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

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

Nakatsu's rainy season runs May–September, 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 December a good time to visit Nakatsu?

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

2.8
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 Nakatsu.

What to pack for Nakatsu in December

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

In December, Nakatsu sees daytime highs around 11°C and nights near 5°C. Pack a warm layer. Worth having: rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Nakatsu 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 offshore is warmest in August at about 27°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 6 to Nov 9 — about 5.2 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov19Cool
Dec16Cool

UV index in Nakatsu 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 Nakatsu peaks around June 21 at about 10 (very high) — 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 21UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Nakatsu 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 Nakatsu is worst in March — around 27 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2026 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar27Moderate
Apr24Moderate
May21Moderate
Jun18Moderate
Jul16Moderate
Aug19Moderate
Sep13Moderate
Oct12Good
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Nakatsu?

Nakatsu sits at 33.6°N, 131.2°E, 7 m above sea level, in Japan. The nearest listed city is Buzen, 6.0 km away.

Topography around Nakatsu

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

Within 3 km, the terrain around Nakatsu has only modest variations in elevation — a maximum elevation change of 55 m around an average of 8 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 820 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,799 m.

The land around Nakatsu is covered by artificial surfaces (48%) and cropland (24%) within 3 km, water (43%) and trees (35%) within 16 km, and trees (50%) and water (34%) within 80 km.

3 km
55 m
16 km
820 m
80 km
1,799 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Buzen 6.0 km · Yokkaichi 15 km · Tsuiki 16 km · Yukuhashi 24 km · Bungo-Takada-shi 24 km · Miyako 27 km · Kanda 28 km · Kawasaki 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 Nakatsu (33.5981°, 131.1883°, elevation 7 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).