Miyakojima weather in January

In January, Miyakojima sees average daytime highs of 20°C and overnight lows near 18°C, with 129 mm of rain across 14.6 wet days and about 10.6 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of January to 10 h 48 min by month's end. Set against the rest of the year, January is Miyakojima's 11th-clearest and 3rd-windiest month. For the whole year in context, see Miyakojima's year-round climate.

Daytime high
20°
12th warmest
Overnight low
18°
1st coldest
Rainfall
129 mm
14.6 wet days
Daylight
10 h 36 min
7:30 AM – 6:07 PM
Cloud cover
73%
11th clearest
Wind
29 km/h
3rd windiest
Solar energy
2.57 kWh/m²
Travel score
5.5
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical January day in Miyakojima reaches about 20°C in the afternoon and slips back to 18°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12119
22119
32119
42119
52119
62119
72119
82119
92119
102119
112119
122119
132119
142119
152019
162018
172018
182018
192018
202018
212018
222018
232018
242018
252018
262018
272018
282018
292018
302018
312018

How January really feels in Miyakojima

Once humidity and wind are folded in, January 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

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Miyakojima weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 18°12914.610.65.5
Feb21° / 19°10412.311.15.7
Mar22° / 20°11712.811.86.1
Apr24° / 22°14012.612.66.4
May26° / 24°18214.313.25.9
Jun28° / 27°16914.313.55.3
Jul29° / 28°13512.813.45.2
Aug29° / 28°21316.412.94.8
Sep28° / 27°18915.112.25.4
Oct26° / 25°13412.111.46.4
Nov24° / 23°12412.910.86.4
Dec22° / 20°13312.510.56.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23268
33268
43070
53070
63070
73070
82971
92872
102872
112872
122971
132872
142872
152872
162872
172872
182872
192872
202872
212872
222971
232971
242872
252872
262773
272773
282773
292773
302773
312773

Chance of precipitation in January

Any precipitation

Miyakojima gets around 129 mm of rain over 14.6 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 49% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
243
344
445
545
646
746
846
947
1047
1147
1247
1347
1447
1546
1646
1746
1846
1947
2047
2147
2248
2348
2448
2549
2649
2749
2849
2948
3048
3148

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 40% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
138272691
238272691
3372625101
4382726100
5382626100
6382625100
7382625110
8382625111
9382625111
10382625111
11382625111
12382625111
13382624111
14392624111
15392624100
16402723100
1740272390
1841272390
1941272380
2042272380
2142282370
2242282270
2343282260
2443282260
2543292260
2643292260
2744292160
2844292160
2944292160
3044292160
3144282170

Wind in January

Winds average 29 km/h in January.

Across January, daily wind ranges from about 29 km/h on the calmest days to 30 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
129windy
229windy
329windy
429windy
529windy
629windy
729windy
829windy
929windy
1029windy
1129windy
1230windy
1330windy
1430windy
1530windy
1630windy
1730windy
1830windy
1930windy
2030windy
2130windy
2230windy
2330windy
2430windy
2530windy
2630windy
2729windy
2829windy
2929windy
3029windy
3129windy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 30 min at the start of January to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 7:27 AM to 7:27 AM, and sunset from 5:56 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.57:275:56
210.57:285:57
310.57:285:58
410.57:285:58
510.57:285:59
610.57:296:00
710.57:296:00
810.57:296:01
910.57:296:02
1010.67:296:02
1110.67:296:03
1210.67:296:04
1310.67:296:04
1410.67:306:05
1510.67:306:06
1610.67:306:07
1710.67:306:07
1810.67:296:08
1910.77:296:09
2010.77:296:09
2110.77:296:10
2210.77:296:11
2310.77:296:12
2410.77:296:12
2510.77:296:13
2610.87:286:14
2710.87:286:14
2810.87:286:15
2910.87:276:16
3010.87:276:17
3110.87:276:17

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.57 kWh/m².

For context, solar energy here swings from a low near 2.48 kWh/m² to a high of 6.38 kWh/m² in July across the year — January's 2.57 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
202.6Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.6Moderate
252.6Moderate
262.6Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.7Moderate
312.8Moderate
Planning a trip in January

Hazard calendar for Miyakojima

In seasonPeak

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

Miyakojima 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 January a good time to visit Miyakojima?

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

5.5
Sightseeing
8th-best month of the year
3.1
Beach & pool
12th-best month of the year

January is a reasonable time to visit Miyakojima for sightseeing.

What to pack for Miyakojima in January

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

In January, Miyakojima sees daytime highs around 20°C and nights near 18°C. Pack rain gear and a windbreaker. About 15 days see rain.

rain geara windbreaker

Sea temperature near Miyakojima in January

The nearest coast averages about 23°C in January — 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 23°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb23Refreshing
Mar23Refreshing
Apr24Warm
May26Warm
Jun28Warm
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov26Warm
Dec24Warm

UV index in Miyakojima in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Miyakojima peaks around June 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highHighJun 20UV 12Dec 21UV 5
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Very high
Apr9Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct8Very high
Nov7High
Dec5High

Air quality in Miyakojima in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Miyakojima is worst in March — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (June, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMar 1816 µg/m³Jun 217 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar16Moderate
Apr14Moderate
May10Good
Jun7Good
Jul8Good
Aug8Good
Sep8Good
Oct10Good
Nov10Good
Dec11Good
Location & terrain

Where is Miyakojima?

Miyakojima sits at 24.8°N, 125.3°E, 36 m above sea level, in Japan. The nearest listed city is Hirara, 2.0 km away.

ItomanTomigusukuNahaYaeseKanegusukuNanjō

Topography around Miyakojima

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

Within 3 km, the terrain around Miyakojima has only modest variations in elevation — a maximum elevation change of 103 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 114 m; within 80 km, only modest variations in elevation — a maximum elevation change of 110 m.

The land around Miyakojima is covered by trees (33%) and cropland (32%) within 3 km, water (77%) within 16 km, and water (98%) within 80 km.

3 km
103 m
16 km
114 m
80 km
110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Hirara 2.0 km · Ishigaki 127 km · Itoman 280 km · Tomigusuku 284 km · Naha 285 km · Yaese 286 km · Kanegusuku 288 km · Nanjō 289 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 Miyakojima (24.7902°, 125.3111°, elevation 36 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).