Nagahama weather in December

In December, Nagahama sees average daytime highs of 8°C and overnight lows near 2°C, with 111 mm of precipitation across 17.3 wet days and about 9.7 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 10°C in the first days to 6°C by the end. The sky is clear or mostly clear about 19% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of December to 9 h 36 min by month's end. Set against the rest of the year, December is Nagahama's 3rd-clearest and 4th-windiest month. For the whole year in context, see Nagahama's year-round climate.

Daytime high
10th warmest
Overnight low
4th coldest
Precipitation
111 mm
17.3 wet days
Daylight
9 h 36 min
7:02 AM – 4:40 PM
Cloud cover
61%
3rd clearest
Wind
10 km/h
4th windiest
Solar energy
2.2 kWh/m²
Travel score
1.3
out of 10

Nagahama is city in Shiga Prefecture, Japan.

Density
167/km²
people per km²
Founded
2006

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 10°C in the first days to 6°C by the end.

A typical December day in Nagahama reaches about 8°C in the afternoon and slips back to 2°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 12°C. Set against its neighbours, December runs about 6°C cooler than November and about 3°C warmer than January.

-5°10°15°151015202531
Avg high (°C)Avg low (°C)
1115
2115
3114
4104
5104
6104
7104
893
993
1093
1193
1293
1393
1483
1582
1682
1782
1882
1982
2082
2172
2272
2371
2471
2571
2671
2771
2871
2961
3061
3161

How December really feels in Nagahama

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 19 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
19
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Nagahama 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 / -0°11318.111.59.90.1
Feb / -0°10014.99.610.70.4
Mar10° / 14415.1411.72.1
Apr16° / 152130.412.94.5
May20° / 12°18112.5013.85.9
Jun24° / 17°22815.4014.35.6
Jul28° / 22°28718.3014.14.8
Aug29° / 23°17315.7013.34.7
Sep25° / 19°22214.5012.25.9
Oct20° / 13°17112.4011.16.0
Nov14° / 11012.80.210.13.8
Dec / 11117.36.59.71.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 26% of December, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24951
34852
44852
54753
64654
74654
84654
94555
104555
114456
124357
134357
144357
154258
164258
174258
184357
194456
204456
214456
224456
234555
244654
254555
264555
274555
284555
294654
304654
314456

Chance of precipitation in December

Any precipitationSnow

Nagahama gets around 111 mm of rain and snow over 17.3 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 56% and peaks near 59% on the wettest days, and about 7 days bring snow. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1485
2486
3497
4498
5509
65110
75212
85313
95415
105516
115617
125718
135819
145820
155821
165922
175922
185923
195924
205925
215826
225827
235827
245828
255829
265830
275831
285831
295832
305933
315934

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

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
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 48 min at the start of December to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 6:51 AM to 7:09 AM, and sunset from 4:38 PM to 4:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.86:514:38
29.86:524:38
39.86:534:38
49.76:544:38
59.76:544:38
69.76:554:38
79.76:564:38
89.76:574:38
99.76:584:38
109.76:584:38
119.76:594:39
129.67:004:39
139.67:004:39
149.67:014:39
159.67:024:39
169.67:024:40
179.67:034:40
189.67:044:40
199.67:044:41
209.67:054:41
219.67:054:42
229.67:064:42
239.67:064:43
249.67:074:43
259.67:074:44
269.67:074:44
279.67:084:45
289.67:084:45
299.67:084:46
309.67:094:47
319.67:094:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.2 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.2 kWh/m² to a high of 5.39 kWh/m² in May across the year — December's 2.2 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.2Moderate
42.2Moderate
52.2Moderate
62.2Moderate
72.2Moderate
82.2Moderate
92.2Moderate
102.2Moderate
112.2Moderate
122.2Moderate
132.2Moderate
142.2Moderate
152.2Moderate
162.2Moderate
172.2Moderate
182.2Moderate
192.2Moderate
202.2Moderate
212.2Moderate
222.3Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.3Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.3Moderate
312.4Moderate
Planning a trip in December

Hazard calendar for Nagahama

In seasonPeak

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

Nagahama 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 Nagahama?

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

1.3
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 Nagahama.

What to pack for Nagahama in December

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

In December, Nagahama sees daytime highs around 8°C and nights near 2°C. Pack a warm layer and rain gear. About 17 days see rain.

a warm layerrain gear

Sea temperature near Nagahama 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 44 km away) is warmest in August at about 27°C and coldest in March near 11°C.

It's comfortable for a long swim from Jun 12 to Nov 7 — about 4.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar11Bracing
Apr13Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug27Warm
Sep26Warm
Oct22Refreshing
Nov19Cool
Dec16Cool

UV index in Nagahama in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nagahama peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Nagahama 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 Nagahama is worst in April — around 26 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1125 µg/m³Aug 1817 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr26Moderate
May25Moderate
Jun21Moderate
Jul17Moderate
Aug17Moderate
Sep17Moderate
Oct18Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Nagahama?

Nagahama sits at 35.4°N, 136.3°E, 86 m above sea level, in Japan. The nearest listed city is Maibara, 8.0 km away.

Topography around Nagahama

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

Within 3 km, the terrain around Nagahama has only modest variations in elevation — a maximum elevation change of 44 m around an average of 90 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,288 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,606 m.

The land around Nagahama is covered by artificial surfaces (43%), water (29%) and cropland (25%) within 3 km, trees (40%) and water (34%) within 16 km, and trees (59%) within 80 km.

3 km
44 m
16 km
1,288 m
80 km
1,606 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Maibara 8.0 km · Hikone 15 km · Takashima 23 km · Tarui 24 km · Echigawa 25 km · Takada 29 km · Ikeno 29 km · Ibi 29 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 Nagahama (35.3833°, 136.2667°, elevation 86 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).