Miyakojima weather in December
In December, Miyakojima sees average daytime highs of 22°C and overnight lows near 20°C, with 133 mm of rain across 12.5 wet days and about 10.5 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.
Highs ease over the month, from about 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 20% of the time in December, and the air most often feels comfortable.
Daylight stretches from about 10 h 36 min at the start of December to 10 h 30 min by month's end. Set against the rest of the year, December is Miyakojima's 9th-clearest and 1st-windiest month. For the whole year in context, see Miyakojima's year-round climate.
- Daytime high
- 22°
- 9th warmest
- Overnight low
- 20°
- 4th coldest
- Rainfall
- 133 mm
- 12.5 wet days
- Daylight
- 10 h 30 min
- 7:21 AM – 5:49 PM
- Cloud cover
- 69%
- 9th clearest
- Wind
- 31 km/h
- 1st windiest
- Solar energy
- 2.48 kWh/m²
- Travel score
- 6.1
- out of 10
Temperature in December
Highs ease over the month, from about 23°C in the first days to 21°C by the end.
A typical December day in Miyakojima reaches about 22°C in the afternoon and slips back to 20°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Avg low (°C) | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 23 | 22 |
| 2 | 23 | 21 |
| 3 | 23 | 21 |
| 4 | 23 | 21 |
| 5 | 23 | 21 |
| 6 | 23 | 21 |
| 7 | 23 | 21 |
| 8 | 23 | 21 |
| 9 | 22 | 21 |
| 10 | 22 | 21 |
| 11 | 22 | 21 |
| 12 | 22 | 21 |
| 13 | 22 | 20 |
| 14 | 22 | 20 |
| 15 | 22 | 20 |
| 16 | 22 | 20 |
| 17 | 22 | 20 |
| 18 | 22 | 20 |
| 19 | 22 | 20 |
| 20 | 22 | 20 |
| 21 | 22 | 20 |
| 22 | 21 | 20 |
| 23 | 21 | 20 |
| 24 | 21 | 20 |
| 25 | 21 | 20 |
| 26 | 21 | 19 |
| 27 | 21 | 19 |
| 28 | 21 | 19 |
| 29 | 21 | 19 |
| 30 | 21 | 19 |
| 31 | 21 | 19 |
How December really feels in Miyakojima
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.
December 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 December compares with the rest of the year at a glance. December is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 18° | 129 | 14.6 | 10.6 | 5.5 |
| Feb | 21° / 19° | 104 | 12.3 | 11.1 | 5.7 |
| Mar | 22° / 20° | 117 | 12.8 | 11.8 | 6.1 |
| Apr | 24° / 22° | 140 | 12.6 | 12.6 | 6.4 |
| May | 26° / 24° | 182 | 14.3 | 13.2 | 5.9 |
| Jun | 28° / 27° | 169 | 14.3 | 13.5 | 5.3 |
| Jul | 29° / 28° | 135 | 12.8 | 13.4 | 5.2 |
| Aug | 29° / 28° | 213 | 16.4 | 12.9 | 4.8 |
| Sep | 28° / 27° | 189 | 15.1 | 12.2 | 5.4 |
| Oct | 26° / 25° | 134 | 12.1 | 11.4 | 6.4 |
| Nov | 24° / 23° | 124 | 12.9 | 10.8 | 6.4 |
| Dec | 22° / 20° | 133 | 12.5 | 10.5 | 6.1 |
Cloud cover in December
The sky is clear or mostly clear about 20% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 62%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 43 | 42 | 41 | 41 | 40 | 40 | 39 | 39 | 38 | 37 | 37 | 37 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 35 | 35 | 34 | 34 | 33 |
| Cloudier (%) | 57 | 58 | 59 | 59 | 60 | 60 | 61 | 61 | 62 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 62 | 63 | 63 | 63 | 64 | 64 | 64 | 65 | 65 | 66 | 66 | 67 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 43 | 57 |
| 2 | 42 | 58 |
| 3 | 41 | 59 |
| 4 | 41 | 59 |
| 5 | 40 | 60 |
| 6 | 40 | 60 |
| 7 | 39 | 61 |
| 8 | 39 | 61 |
| 9 | 38 | 62 |
| 10 | 37 | 63 |
| 11 | 37 | 63 |
| 12 | 37 | 63 |
| 13 | 38 | 62 |
| 14 | 38 | 62 |
| 15 | 38 | 62 |
| 16 | 38 | 62 |
| 17 | 38 | 62 |
| 18 | 38 | 62 |
| 19 | 38 | 62 |
| 20 | 38 | 62 |
| 21 | 37 | 63 |
| 22 | 37 | 63 |
| 23 | 37 | 63 |
| 24 | 36 | 64 |
| 25 | 36 | 64 |
| 26 | 36 | 64 |
| 27 | 35 | 65 |
| 28 | 35 | 65 |
| 29 | 34 | 66 |
| 30 | 34 | 66 |
| 31 | 33 | 67 |
Chance of precipitation in December
Miyakojima gets around 133 mm of rain over 12.5 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 40% and peaks near 42% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 41 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 42 |
| Rain chance (%) | |
|---|---|
| 1 | 41 |
| 2 | 40 |
| 3 | 40 |
| 4 | 39 |
| 5 | 39 |
| 6 | 39 |
| 7 | 39 |
| 8 | 39 |
| 9 | 40 |
| 10 | 40 |
| 11 | 40 |
| 12 | 41 |
| 13 | 41 |
| 14 | 41 |
| 15 | 41 |
| 16 | 41 |
| 17 | 41 |
| 18 | 41 |
| 19 | 41 |
| 20 | 41 |
| 21 | 41 |
| 22 | 41 |
| 23 | 40 |
| 24 | 40 |
| 25 | 40 |
| 26 | 40 |
| 27 | 40 |
| 28 | 40 |
| 29 | 41 |
| 30 | 41 |
| 31 | 42 |
Humidity in December
Most of December feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the comfortable band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 21% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 13 | 14 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 19 | 20 | 21 | 22 | 22 | 23 | 24 | 25 | 26 | 27 | 29 | 30 | 31 | 33 | 34 | 35 | 36 | 37 | 37 | 37 | 38 | 38 |
| Comfortable (%) | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Humid (%) | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 |
| Muggy (%) | 29 | 27 | 26 | 24 | 23 | 22 | 21 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 12 | 11 | 11 | 10 | 10 | 9 | 9 |
| Oppressive (%) | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 13 | 21 | 28 | 29 | 9 |
| 2 | 14 | 22 | 28 | 27 | 9 |
| 3 | 15 | 23 | 28 | 26 | 8 |
| 4 | 16 | 24 | 28 | 24 | 8 |
| 5 | 16 | 25 | 28 | 23 | 7 |
| 6 | 17 | 26 | 29 | 22 | 7 |
| 7 | 17 | 27 | 29 | 21 | 6 |
| 8 | 18 | 27 | 29 | 20 | 6 |
| 9 | 19 | 28 | 29 | 19 | 5 |
| 10 | 19 | 28 | 29 | 19 | 5 |
| 11 | 20 | 29 | 29 | 19 | 4 |
| 12 | 21 | 29 | 29 | 18 | 4 |
| 13 | 22 | 29 | 28 | 18 | 3 |
| 14 | 22 | 29 | 28 | 18 | 3 |
| 15 | 23 | 29 | 28 | 18 | 2 |
| 16 | 24 | 28 | 28 | 18 | 2 |
| 17 | 25 | 28 | 27 | 17 | 2 |
| 18 | 26 | 28 | 27 | 17 | 2 |
| 19 | 27 | 28 | 27 | 16 | 2 |
| 20 | 29 | 28 | 26 | 16 | 2 |
| 21 | 30 | 28 | 26 | 15 | 1 |
| 22 | 31 | 28 | 25 | 14 | 1 |
| 23 | 33 | 28 | 25 | 14 | 1 |
| 24 | 34 | 27 | 25 | 13 | 1 |
| 25 | 35 | 27 | 24 | 12 | 1 |
| 26 | 36 | 27 | 24 | 11 | 1 |
| 27 | 37 | 27 | 24 | 11 | 1 |
| 28 | 37 | 27 | 25 | 10 | 1 |
| 29 | 37 | 27 | 25 | 10 | 1 |
| 30 | 38 | 27 | 25 | 9 | 1 |
| 31 | 38 | 27 | 25 | 9 | 1 |
Wind in December
Winds average 31 km/h in December, the windiest month of the year.
Across December, daily wind ranges from about 29 km/h on the calmest days to 31 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 |
| Feels | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 31 | windy |
| 2 | 31 | windy |
| 3 | 31 | windy |
| 4 | 31 | windy |
| 5 | 31 | windy |
| 6 | 31 | windy |
| 7 | 31 | windy |
| 8 | 31 | windy |
| 9 | 31 | windy |
| 10 | 31 | windy |
| 11 | 31 | windy |
| 12 | 31 | windy |
| 13 | 31 | windy |
| 14 | 31 | windy |
| 15 | 31 | windy |
| 16 | 31 | windy |
| 17 | 31 | windy |
| 18 | 31 | windy |
| 19 | 30 | windy |
| 20 | 30 | windy |
| 21 | 30 | windy |
| 22 | 30 | windy |
| 23 | 30 | windy |
| 24 | 30 | windy |
| 25 | 30 | windy |
| 26 | 30 | windy |
| 27 | 30 | windy |
| 28 | 29 | windy |
| 29 | 29 | windy |
| 30 | 29 | windy |
| 31 | 29 | windy |
Sunrise & sunset in December
Daylight runs from about 10 h 36 min at the start of December to 10 h 30 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 7:11 AM to 7:27 AM, and sunset from 5:46 PM to 5:56 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.6 | 10.6 | 10.6 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 |
| Sunrise (AM) | 7:11 | 7:12 | 7:13 | 7:13 | 7:14 | 7:15 | 7:15 | 7:16 | 7:17 | 7:17 | 7:18 | 7:19 | 7:19 | 7:20 | 7:20 | 7:21 | 7:21 | 7:22 | 7:22 | 7:23 | 7:23 | 7:24 | 7:24 | 7:25 | 7:25 | 7:26 | 7:26 | 7:26 | 7:27 | 7:27 | 7:27 |
| Sunset (PM) | 5:46 | 5:46 | 5:46 | 5:46 | 5:46 | 5:46 | 5:46 | 5:47 | 5:47 | 5:47 | 5:47 | 5:48 | 5:48 | 5:48 | 5:49 | 5:49 | 5:49 | 5:50 | 5:50 | 5:51 | 5:51 | 5:52 | 5:52 | 5:52 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:56 | 5:56 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.6 | 7:11 | 5:46 |
| 2 | 10.6 | 7:12 | 5:46 |
| 3 | 10.6 | 7:13 | 5:46 |
| 4 | 10.5 | 7:13 | 5:46 |
| 5 | 10.5 | 7:14 | 5:46 |
| 6 | 10.5 | 7:15 | 5:46 |
| 7 | 10.5 | 7:15 | 5:46 |
| 8 | 10.5 | 7:16 | 5:47 |
| 9 | 10.5 | 7:17 | 5:47 |
| 10 | 10.5 | 7:17 | 5:47 |
| 11 | 10.5 | 7:18 | 5:47 |
| 12 | 10.5 | 7:19 | 5:48 |
| 13 | 10.5 | 7:19 | 5:48 |
| 14 | 10.5 | 7:20 | 5:48 |
| 15 | 10.5 | 7:20 | 5:49 |
| 16 | 10.5 | 7:21 | 5:49 |
| 17 | 10.5 | 7:21 | 5:49 |
| 18 | 10.5 | 7:22 | 5:50 |
| 19 | 10.5 | 7:22 | 5:50 |
| 20 | 10.5 | 7:23 | 5:51 |
| 21 | 10.5 | 7:23 | 5:51 |
| 22 | 10.5 | 7:24 | 5:52 |
| 23 | 10.5 | 7:24 | 5:52 |
| 24 | 10.5 | 7:25 | 5:52 |
| 25 | 10.5 | 7:25 | 5:53 |
| 26 | 10.5 | 7:26 | 5:54 |
| 27 | 10.5 | 7:26 | 5:54 |
| 28 | 10.5 | 7:26 | 5:55 |
| 29 | 10.5 | 7:27 | 5:55 |
| 30 | 10.5 | 7:27 | 5:56 |
| 31 | 10.5 | 7:27 | 5:56 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.48 kWh/m² — the year's lowest.
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 — December's 2.48 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.7 | 2.7 | 2.7 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.7 | Moderate |
| 2 | 2.7 | Moderate |
| 3 | 2.7 | Moderate |
| 4 | 2.6 | Moderate |
| 5 | 2.6 | Moderate |
| 6 | 2.6 | Moderate |
| 7 | 2.6 | Moderate |
| 8 | 2.6 | Moderate |
| 9 | 2.5 | Moderate |
| 10 | 2.5 | Moderate |
| 11 | 2.5 | Moderate |
| 12 | 2.5 | Moderate |
| 13 | 2.5 | Moderate |
| 14 | 2.5 | Moderate |
| 15 | 2.5 | Moderate |
| 16 | 2.5 | Moderate |
| 17 | 2.5 | Moderate |
| 18 | 2.5 | Moderate |
| 19 | 2.5 | Moderate |
| 20 | 2.5 | Moderate |
| 21 | 2.5 | Moderate |
| 22 | 2.5 | Moderate |
| 23 | 2.5 | Moderate |
| 24 | 2.5 | Moderate |
| 25 | 2.5 | Moderate |
| 26 | 2.5 | Moderate |
| 27 | 2.5 | Moderate |
| 28 | 2.5 | Moderate |
| 29 | 2.5 | Moderate |
| 30 | 2.5 | Moderate |
| 31 | 2.5 | Moderate |
Hazard calendar for Miyakojima
In December, 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.
Is December a good time to visit Miyakojima?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Miyakojima for sightseeing.
What to pack for Miyakojima in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Miyakojima sees daytime highs around 22°C and nights near 20°C. Pack a windbreaker. Worth having: rain gear. About 13 days see rain.
Sea temperature near Miyakojima 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 23°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 23 | 23 | 23 | 24 | 26 | 28 | 29 | 29 | 28 | 27 | 26 | 24 |
| Comfort | Refreshing | Refreshing | Refreshing | Warm | Warm | Warm | Tropical | Tropical | Tropical | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 24 | Warm |
| May | 26 | Warm |
| Jun | 28 | Warm |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 26 | Warm |
| Dec | 24 | Warm |
UV index in Miyakojima in December
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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 8 | 10 | 9 | 10 | 12 | 12 | 12 | 11 | 8 | 7 | 5 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 9 | Very high |
| May | 10 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 7 | High |
| Dec | 5 | High |
Air quality in Miyakojima in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 12 | 13 | 16 | 14 | 10 | 7 | 8 | 8 | 8 | 10 | 10 | 11 |
| Level | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 13 | Moderate |
| Mar | 16 | Moderate |
| Apr | 14 | Moderate |
| May | 10 | Good |
| Jun | 7 | Good |
| Jul | 8 | Good |
| Aug | 8 | Good |
| Sep | 8 | Good |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 11 | Good |
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.
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.
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
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).