Nichinan weather in December
In December, Nichinan sees average daytime highs of 14°C and overnight lows near 8°C, with 86 mm of rain across 6.9 wet days and about 10 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.
Highs ease over the month, from about 16°C in the first days to 13°C by the end. The sky is clear or mostly clear about 51% of the time in December, and the air most often feels dry.
Daylight stretches from about 10 h 06 min at the start of December to 10 hours by month's end. Set against the rest of the year, December is Nichinan's 1st-clearest and 5th-windiest month. For the whole year in context, see Nichinan's year-round climate.
- Daytime high
- 14°
- 10th warmest
- Overnight low
- 8°
- 3rd coldest
- Rainfall
- 86 mm
- 6.9 wet days
- Daylight
- 9 h 54 min
- 7:12 AM – 5:09 PM
- Cloud cover
- 44%
- 1st clearest
- Wind
- 14 km/h
- 5th windiest
- Solar energy
- 2.74 kWh/m²
- Travel score
- 4.7
- out of 10
Nichinan is city in Miyazaki Prefecture, Japan.
- Density
- 96/km²
- people per km²
- Founded
- 2009
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 16°C in the first days to 13°C by the end.
A typical December day in Nichinan reaches about 14°C in the afternoon and slips back to 8°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 18°C. Set against its neighbours, December runs about 5°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) | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Avg low (°C) | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 16 | 11 |
| 2 | 16 | 10 |
| 3 | 16 | 10 |
| 4 | 16 | 10 |
| 5 | 16 | 10 |
| 6 | 15 | 10 |
| 7 | 15 | 9 |
| 8 | 15 | 9 |
| 9 | 15 | 9 |
| 10 | 15 | 9 |
| 11 | 15 | 9 |
| 12 | 15 | 9 |
| 13 | 14 | 8 |
| 14 | 14 | 8 |
| 15 | 14 | 8 |
| 16 | 14 | 8 |
| 17 | 14 | 8 |
| 18 | 14 | 8 |
| 19 | 14 | 8 |
| 20 | 14 | 8 |
| 21 | 14 | 8 |
| 22 | 14 | 7 |
| 23 | 13 | 7 |
| 24 | 13 | 7 |
| 25 | 13 | 7 |
| 26 | 13 | 7 |
| 27 | 13 | 7 |
| 28 | 13 | 7 |
| 29 | 13 | 7 |
| 30 | 13 | 7 |
| 31 | 13 | 7 |
How December really feels in Nichinan
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.
Nichinan weather by month
How December compares with the rest of the year at a glance. December is the 10th-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 6° | 88 | 7.7 | 10.2 | 3.5 |
| Feb | 13° / 7° | 104 | 8.8 | 10.8 | 3.8 |
| Mar | 16° / 10° | 169 | 12.8 | 11.8 | 4.8 |
| Apr | 20° / 14° | 185 | 11.9 | 12.8 | 5.9 |
| May | 23° / 18° | 210 | 12.6 | 13.6 | 6.2 |
| Jun | 25° / 21° | 421 | 20 | 14 | 4.9 |
| Jul | 29° / 25° | 237 | 17.1 | 13.9 | 4.5 |
| Aug | 30° / 25° | 202 | 17.4 | 13.2 | 4.4 |
| Sep | 27° / 23° | 260 | 16.9 | 12.2 | 5.3 |
| Oct | 23° / 18° | 170 | 11.1 | 11.2 | 6.8 |
| Nov | 19° / 13° | 119 | 9 | 10.4 | 6.3 |
| Dec | 14° / 8° | 86 | 6.9 | 10 | 4.7 |
Cloud cover in December
The sky is clear or mostly clear about 51% of the time in December, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 34%. Skies tend to open up as the month goes on.
| 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 (%) | 63 | 64 | 64 | 64 | 64 | 65 | 64 | 65 | 65 | 65 | 65 | 65 | 66 | 66 | 65 | 65 | 66 | 66 | 66 | 66 | 67 | 68 | 68 | 68 | 69 | 70 | 70 | 70 | 70 | 70 | 70 |
| Cloudier (%) | 37 | 36 | 36 | 36 | 36 | 35 | 36 | 35 | 35 | 35 | 35 | 35 | 34 | 34 | 35 | 35 | 34 | 34 | 34 | 34 | 33 | 32 | 32 | 32 | 31 | 30 | 30 | 30 | 30 | 30 | 30 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 63 | 37 |
| 2 | 64 | 36 |
| 3 | 64 | 36 |
| 4 | 64 | 36 |
| 5 | 64 | 36 |
| 6 | 65 | 35 |
| 7 | 64 | 36 |
| 8 | 65 | 35 |
| 9 | 65 | 35 |
| 10 | 65 | 35 |
| 11 | 65 | 35 |
| 12 | 65 | 35 |
| 13 | 66 | 34 |
| 14 | 66 | 34 |
| 15 | 65 | 35 |
| 16 | 65 | 35 |
| 17 | 66 | 34 |
| 18 | 66 | 34 |
| 19 | 66 | 34 |
| 20 | 66 | 34 |
| 21 | 67 | 33 |
| 22 | 68 | 32 |
| 23 | 68 | 32 |
| 24 | 68 | 32 |
| 25 | 69 | 31 |
| 26 | 70 | 30 |
| 27 | 70 | 30 |
| 28 | 70 | 30 |
| 29 | 70 | 30 |
| 30 | 70 | 30 |
| 31 | 70 | 30 |
Chance of precipitation in December
Nichinan gets around 86 mm of rain over 6.9 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 23% and peaks near 29% on the wettest days. The odds ease toward the end of the month.
| 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 (%) | 29 | 28 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Rain chance (%) | |
|---|---|
| 1 | 29 |
| 2 | 28 |
| 3 | 28 |
| 4 | 28 |
| 5 | 27 |
| 6 | 26 |
| 7 | 26 |
| 8 | 25 |
| 9 | 25 |
| 10 | 24 |
| 11 | 24 |
| 12 | 23 |
| 13 | 23 |
| 14 | 23 |
| 15 | 22 |
| 16 | 22 |
| 17 | 22 |
| 18 | 21 |
| 19 | 21 |
| 20 | 21 |
| 21 | 21 |
| 22 | 20 |
| 23 | 20 |
| 24 | 20 |
| 25 | 19 |
| 26 | 19 |
| 27 | 19 |
| 28 | 19 |
| 29 | 19 |
| 30 | 19 |
| 31 | 19 |
Humidity in December
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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 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 (%) | 86 | 87 | 87 | 89 | 89 | 90 | 91 | 91 | 92 | 93 | 93 | 93 | 93 | 93 | 94 | 94 | 95 | 95 | 95 | 95 | 95 | 95 | 96 | 96 | 96 | 96 | 96 | 97 | 97 | 97 | 97 |
| Comfortable (%) | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 |
| Humid (%) | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 86 | 10 | 4 |
| 2 | 87 | 9 | 4 |
| 3 | 87 | 9 | 4 |
| 4 | 89 | 8 | 3 |
| 5 | 89 | 8 | 3 |
| 6 | 90 | 7 | 3 |
| 7 | 91 | 7 | 2 |
| 8 | 91 | 7 | 2 |
| 9 | 92 | 6 | 2 |
| 10 | 93 | 6 | 1 |
| 11 | 93 | 6 | 1 |
| 12 | 93 | 6 | 1 |
| 13 | 93 | 6 | 1 |
| 14 | 93 | 6 | 1 |
| 15 | 94 | 5 | 1 |
| 16 | 94 | 5 | 1 |
| 17 | 95 | 5 | 0 |
| 18 | 95 | 5 | 0 |
| 19 | 95 | 5 | 0 |
| 20 | 95 | 5 | 0 |
| 21 | 95 | 5 | 0 |
| 22 | 95 | 5 | 0 |
| 23 | 96 | 4 | 0 |
| 24 | 96 | 4 | 0 |
| 25 | 96 | 4 | 0 |
| 26 | 96 | 4 | 0 |
| 27 | 96 | 4 | 0 |
| 28 | 97 | 3 | 0 |
| 29 | 97 | 3 | 0 |
| 30 | 97 | 3 | 0 |
| 31 | 97 | 3 | 0 |
Wind in December
Winds average 14 km/h in December.
Across December, daily wind ranges from about 14 km/h on the calmest days to 15 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) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 14 | light breeze |
| 2 | 14 | light breeze |
| 3 | 14 | light breeze |
| 4 | 14 | light breeze |
| 5 | 14 | light breeze |
| 6 | 14 | light breeze |
| 7 | 14 | light breeze |
| 8 | 14 | light breeze |
| 9 | 14 | light breeze |
| 10 | 14 | light breeze |
| 11 | 14 | light breeze |
| 12 | 14 | light breeze |
| 13 | 14 | light breeze |
| 14 | 14 | light breeze |
| 15 | 14 | light breeze |
| 16 | 14 | light breeze |
| 17 | 14 | light breeze |
| 18 | 14 | light breeze |
| 19 | 14 | light breeze |
| 20 | 14 | light breeze |
| 21 | 14 | light breeze |
| 22 | 14 | light breeze |
| 23 | 14 | light breeze |
| 24 | 15 | light breeze |
| 25 | 15 | light breeze |
| 26 | 15 | light breeze |
| 27 | 15 | light breeze |
| 28 | 15 | light breeze |
| 29 | 15 | light breeze |
| 30 | 15 | light breeze |
| 31 | 15 | light breeze |
Sunrise & sunset in December
Daylight runs from about 10 h 06 min at the start of December to 10 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over December. Sunrise moves from 7:02 AM to 7:19 AM, and sunset from 5:07 PM to 5:17 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) | 10.1 | 10.1 | 10.1 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 10.0 | 10.0 | 10.0 |
| Sunrise (AM) | 7:02 | 7:02 | 7:03 | 7:04 | 7:05 | 7:05 | 7:06 | 7:07 | 7:08 | 7:08 | 7:09 | 7:10 | 7:10 | 7:11 | 7:12 | 7:12 | 7:13 | 7:13 | 7:14 | 7:14 | 7:15 | 7:15 | 7:16 | 7:16 | 7:17 | 7:17 | 7:17 | 7:18 | 7:18 | 7:18 | 7:19 |
| Sunset (PM) | 5:07 | 5:07 | 5:07 | 5:07 | 5:07 | 5:07 | 5:07 | 5:07 | 5:07 | 5:08 | 5:08 | 5:08 | 5:08 | 5:09 | 5:09 | 5:09 | 5:10 | 5:10 | 5:10 | 5:11 | 5:11 | 5:12 | 5:12 | 5:13 | 5:13 | 5:14 | 5:14 | 5:15 | 5:15 | 5:16 | 5:17 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.1 | 7:02 | 5:07 |
| 2 | 10.1 | 7:02 | 5:07 |
| 3 | 10.1 | 7:03 | 5:07 |
| 4 | 10.0 | 7:04 | 5:07 |
| 5 | 10.0 | 7:05 | 5:07 |
| 6 | 10.0 | 7:05 | 5:07 |
| 7 | 10.0 | 7:06 | 5:07 |
| 8 | 10.0 | 7:07 | 5:07 |
| 9 | 10.0 | 7:08 | 5:07 |
| 10 | 10.0 | 7:08 | 5:08 |
| 11 | 10.0 | 7:09 | 5:08 |
| 12 | 10.0 | 7:10 | 5:08 |
| 13 | 10.0 | 7:10 | 5:08 |
| 14 | 10.0 | 7:11 | 5:09 |
| 15 | 10.0 | 7:12 | 5:09 |
| 16 | 9.9 | 7:12 | 5:09 |
| 17 | 9.9 | 7:13 | 5:10 |
| 18 | 9.9 | 7:13 | 5:10 |
| 19 | 9.9 | 7:14 | 5:10 |
| 20 | 9.9 | 7:14 | 5:11 |
| 21 | 9.9 | 7:15 | 5:11 |
| 22 | 9.9 | 7:15 | 5:12 |
| 23 | 9.9 | 7:16 | 5:12 |
| 24 | 9.9 | 7:16 | 5:13 |
| 25 | 9.9 | 7:17 | 5:13 |
| 26 | 9.9 | 7:17 | 5:14 |
| 27 | 9.9 | 7:17 | 5:14 |
| 28 | 9.9 | 7:18 | 5:15 |
| 29 | 10.0 | 7:18 | 5:15 |
| 30 | 10.0 | 7:18 | 5:16 |
| 31 | 10.0 | 7:19 | 5:17 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.74 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 2.74 kWh/m² to a high of 5.4 kWh/m² in July across the year — December's 2.74 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 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 |
| 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 | 2.7 | Moderate |
| 5 | 2.7 | Moderate |
| 6 | 2.7 | Moderate |
| 7 | 2.7 | Moderate |
| 8 | 2.7 | Moderate |
| 9 | 2.7 | Moderate |
| 10 | 2.7 | Moderate |
| 11 | 2.7 | Moderate |
| 12 | 2.7 | Moderate |
| 13 | 2.7 | Moderate |
| 14 | 2.7 | Moderate |
| 15 | 2.7 | Moderate |
| 16 | 2.7 | Moderate |
| 17 | 2.7 | Moderate |
| 18 | 2.7 | Moderate |
| 19 | 2.8 | Moderate |
| 20 | 2.8 | Moderate |
| 21 | 2.8 | Moderate |
| 22 | 2.8 | Moderate |
| 23 | 2.8 | Moderate |
| 24 | 2.8 | Moderate |
| 25 | 2.8 | Moderate |
| 26 | 2.9 | Moderate |
| 27 | 2.9 | Moderate |
| 28 | 2.9 | Moderate |
| 29 | 2.9 | Moderate |
| 30 | 2.9 | Moderate |
| 31 | 2.9 | Moderate |
Hazard calendar for Nichinan
In December, Nichinan sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Nichinan sits in the Pacific typhoon belt; the season peaks July–October.
Is December a good time to visit Nichinan?
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 Nichinan for sightseeing.
What to pack for Nichinan in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Nichinan sees daytime highs around 14°C and nights near 8°C. Worth packing: a warm layer. About 7 days see rain.
Sea temperature near Nichinan in December
The nearest coast averages about 22°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 25 km away) is warmest in August at about 28°C and coldest in February near 19°C.
It's comfortable for a long swim from Apr 4 to Jan 14 — about 9.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 19 | 19 | 21 | 22 | 24 | 27 | 28 | 27 | 26 | 24 | 22 |
| Comfort | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Warm | Tropical | Warm | Warm | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Cool |
| Feb | 19 | Cool |
| Mar | 19 | Cool |
| Apr | 21 | Refreshing |
| May | 22 | Refreshing |
| Jun | 24 | Warm |
| Jul | 27 | Warm |
| Aug | 28 | Tropical |
| Sep | 27 | Warm |
| Oct | 26 | Warm |
| Nov | 24 | Refreshing |
| Dec | 22 | Refreshing |
UV index in Nichinan in December
Clear-sky midday UV in December peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Nichinan peaks around June 22 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 3 (moderate).
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) | 3 | 5 | 7 | 8 | 8 | 11 | 11 | 10 | 10 | 6 | 5 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 5 | Moderate |
| Mar | 7 | High |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Very high |
| Sep | 10 | Very high |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 3 | Moderate |
Air quality in Nichinan 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 Nichinan is worst in April — around 22 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (July, 11 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) | 15 | 18 | 21 | 22 | 20 | 16 | 11 | 12 | 11 | 12 | 13 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good | Good | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 18 | Moderate |
| Mar | 21 | Moderate |
| Apr | 22 | Moderate |
| May | 20 | Moderate |
| Jun | 16 | Moderate |
| Jul | 11 | Good |
| Aug | 12 | Moderate |
| Sep | 11 | Good |
| Oct | 12 | Good |
| Nov | 13 | Moderate |
| Dec | 12 | Moderate |
Where is Nichinan?
Nichinan sits at 31.6°N, 131.4°E, 29 m above sea level, in Japan. The nearest listed city is Kushima, 17 km away.
Topography around Nichinan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nichinan.
Within 3 km, the terrain around Nichinan has significant variations in elevation — a maximum elevation change of 271 m around an average of 61 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 985 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,640 m.
The land around Nichinan is covered by trees (69%) and artificial surfaces (20%) within 3 km, trees (62%) and water (31%) within 16 km, and water (46%) and trees (45%) 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 Nichinan (31.6°, 131.3667°, elevation 29 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).