Ishiki weather in December
In December, Ishiki sees average daytime highs of 12°C and overnight lows near 8°C, with 68 mm of precipitation across 8.5 wet days and about 9.7 hours of daylight. It is the 10th-warmest and 12th-wettest month of the year here.
Highs ease over the month, from about 14°C in the first days to 11°C by the end. The sky is clear or mostly clear about 57% 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 42 min by month's end. Set against the rest of the year, December is Ishiki's 1st-clearest and 3rd-windiest month. For the whole year in context, see Ishiki's year-round climate.
- Daytime high
- 12°
- 10th warmest
- Overnight low
- 8°
- 4th coldest
- Precipitation
- 68 mm
- 8.5 wet days
- Daylight
- 9 h 42 min
- 6:58 AM – 4:38 PM
- Cloud cover
- 40%
- 1st clearest
- Wind
- 25 km/h
- 3rd windiest
- Solar energy
- 2.59 kWh/m²
- Travel score
- 3.5
- out of 10
Ishiki is dissolved municipality in Hazu district, Aichi prefecture, Japan.
- Density
- 1,064/km²
- people per km²
- Founded
- 1889
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 14°C in the first days to 11°C by the end.
A typical December day in Ishiki reaches about 12°C in the afternoon and slips back to 8°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 15°C. Set against its neighbours, December runs about 5°C cooler than November and about 3°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) | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 |
| Avg low (°C) | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 14 | 10 |
| 2 | 14 | 10 |
| 3 | 14 | 10 |
| 4 | 14 | 10 |
| 5 | 14 | 10 |
| 6 | 13 | 9 |
| 7 | 13 | 9 |
| 8 | 13 | 9 |
| 9 | 13 | 9 |
| 10 | 13 | 9 |
| 11 | 13 | 9 |
| 12 | 12 | 8 |
| 13 | 12 | 8 |
| 14 | 12 | 8 |
| 15 | 12 | 8 |
| 16 | 12 | 8 |
| 17 | 12 | 8 |
| 18 | 12 | 8 |
| 19 | 12 | 7 |
| 20 | 11 | 7 |
| 21 | 11 | 7 |
| 22 | 11 | 7 |
| 23 | 11 | 7 |
| 24 | 11 | 7 |
| 25 | 11 | 7 |
| 26 | 11 | 7 |
| 27 | 11 | 7 |
| 28 | 11 | 7 |
| 29 | 11 | 7 |
| 30 | 11 | 6 |
| 31 | 10 | 6 |
How December really feels in Ishiki
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.
Ishiki 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 10° / 6° | 73 | 9.3 | 0.5 | 9.9 | 2.2 |
| Feb | 10° / 5° | 76 | 9.1 | 0.4 | 10.7 | 2.4 |
| Mar | 13° / 8° | 120 | 10.5 | 0 | 11.7 | 3.6 |
| Apr | 17° / 12° | 129 | 9.9 | 0 | 12.8 | 5.3 |
| May | 20° / 16° | 154 | 10 | 0 | 13.8 | 6.3 |
| Jun | 24° / 21° | 209 | 13.2 | 0 | 14.3 | 6.0 |
| Jul | 27° / 24° | 181 | 13 | 0 | 14.1 | 5.8 |
| Aug | 29° / 26° | 108 | 10.9 | 0 | 13.3 | 5.7 |
| Sep | 26° / 23° | 214 | 13 | 0 | 12.2 | 6.2 |
| Oct | 22° / 18° | 215 | 11.1 | 0 | 11.1 | 6.6 |
| Nov | 17° / 13° | 99 | 8 | 0 | 10.2 | 5.8 |
| Dec | 12° / 8° | 68 | 8.5 | 0.1 | 9.7 | 3.5 |
Cloud cover in December
The sky is clear or mostly clear about 57% of the time in December, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 27%. 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 (%) | 68 | 69 | 69 | 69 | 69 | 70 | 70 | 71 | 71 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 76 | 76 | 76 | 77 | 77 | 77 | 77 | 77 |
| Cloudier (%) | 32 | 31 | 31 | 31 | 31 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 68 | 32 |
| 2 | 69 | 31 |
| 3 | 69 | 31 |
| 4 | 69 | 31 |
| 5 | 69 | 31 |
| 6 | 70 | 30 |
| 7 | 70 | 30 |
| 8 | 71 | 29 |
| 9 | 71 | 29 |
| 10 | 72 | 28 |
| 11 | 72 | 28 |
| 12 | 72 | 28 |
| 13 | 73 | 27 |
| 14 | 73 | 27 |
| 15 | 73 | 27 |
| 16 | 73 | 27 |
| 17 | 74 | 26 |
| 18 | 74 | 26 |
| 19 | 74 | 26 |
| 20 | 75 | 25 |
| 21 | 75 | 25 |
| 22 | 75 | 25 |
| 23 | 75 | 25 |
| 24 | 76 | 24 |
| 25 | 76 | 24 |
| 26 | 76 | 24 |
| 27 | 77 | 23 |
| 28 | 77 | 23 |
| 29 | 77 | 23 |
| 30 | 77 | 23 |
| 31 | 77 | 23 |
Chance of precipitation in December
Ishiki gets around 68 mm of rain and snow over 8.5 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 precipitation averages around 27% and peaks near 28% on the wettest days, and about 0 day brings snow.
| 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 (%) | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Rain chance (%) | |
|---|---|
| 1 | 27 |
| 2 | 26 |
| 3 | 26 |
| 4 | 26 |
| 5 | 26 |
| 6 | 26 |
| 7 | 26 |
| 8 | 26 |
| 9 | 26 |
| 10 | 26 |
| 11 | 26 |
| 12 | 26 |
| 13 | 26 |
| 14 | 26 |
| 15 | 26 |
| 16 | 26 |
| 17 | 26 |
| 18 | 27 |
| 19 | 27 |
| 20 | 27 |
| 21 | 27 |
| 22 | 28 |
| 23 | 28 |
| 24 | 28 |
| 25 | 28 |
| 26 | 28 |
| 27 | 28 |
| 28 | 28 |
| 29 | 28 |
| 30 | 28 |
| 31 | 28 |
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 99% 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 (%) | 95 | 96 | 96 | 97 | 97 | 97 | 98 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 95 | 4 | 1 |
| 2 | 96 | 3 | 1 |
| 3 | 96 | 3 | 1 |
| 4 | 97 | 3 | 0 |
| 5 | 97 | 3 | 0 |
| 6 | 97 | 3 | 0 |
| 7 | 98 | 2 | 0 |
| 8 | 98 | 2 | 0 |
| 9 | 98 | 2 | 0 |
| 10 | 98 | 2 | 0 |
| 11 | 99 | 1 | 0 |
| 12 | 99 | 1 | 0 |
| 13 | 99 | 1 | 0 |
| 14 | 99 | 1 | 0 |
| 15 | 99 | 1 | 0 |
| 16 | 99 | 1 | 0 |
| 17 | 99 | 1 | 0 |
| 18 | 100 | 0 | 0 |
| 19 | 100 | 0 | 0 |
| 20 | 100 | 0 | 0 |
| 21 | 100 | 0 | 0 |
| 22 | 100 | 0 | 0 |
| 23 | 100 | 0 | 0 |
| 24 | 100 | 0 | 0 |
| 25 | 100 | 0 | 0 |
| 26 | 100 | 0 | 0 |
| 27 | 100 | 0 | 0 |
| 28 | 100 | 0 | 0 |
| 29 | 100 | 0 | 0 |
| 30 | 100 | 0 | 0 |
| 31 | 100 | 0 | 0 |
Wind in December
Winds average 25 km/h in December.
Across December, daily wind ranges from about 23 km/h on the calmest days to 27 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) | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 23 | breezy |
| 2 | 23 | breezy |
| 3 | 24 | breezy |
| 4 | 24 | breezy |
| 5 | 24 | breezy |
| 6 | 24 | breezy |
| 7 | 24 | breezy |
| 8 | 24 | breezy |
| 9 | 24 | breezy |
| 10 | 25 | breezy |
| 11 | 25 | breezy |
| 12 | 25 | breezy |
| 13 | 25 | breezy |
| 14 | 25 | breezy |
| 15 | 25 | breezy |
| 16 | 25 | breezy |
| 17 | 25 | breezy |
| 18 | 25 | breezy |
| 19 | 25 | breezy |
| 20 | 25 | breezy |
| 21 | 26 | breezy |
| 22 | 26 | breezy |
| 23 | 26 | breezy |
| 24 | 26 | breezy |
| 25 | 26 | breezy |
| 26 | 26 | breezy |
| 27 | 26 | breezy |
| 28 | 26 | breezy |
| 29 | 26 | breezy |
| 30 | 26 | breezy |
| 31 | 27 | breezy |
Sunrise & sunset in December
Daylight runs from about 9 h 48 min at the start of December to 9 h 42 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 6:47 AM to 7:04 AM, and sunset from 4:37 PM to 4:46 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) | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.8 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 | 9.7 |
| Sunrise (AM) | 6:47 | 6:48 | 6:48 | 6:49 | 6:50 | 6:51 | 6:52 | 6:52 | 6:53 | 6:54 | 6:55 | 6:55 | 6:56 | 6:57 | 6:57 | 6:58 | 6:58 | 6:59 | 7:00 | 7:00 | 7:01 | 7:01 | 7:02 | 7:02 | 7:02 | 7:03 | 7:03 | 7:03 | 7:04 | 7:04 | 7:04 |
| Sunset (PM) | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:37 | 4:38 | 4:38 | 4:38 | 4:38 | 4:39 | 4:39 | 4:39 | 4:40 | 4:40 | 4:41 | 4:41 | 4:42 | 4:42 | 4:43 | 4:43 | 4:44 | 4:45 | 4:45 | 4:46 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.8 | 6:47 | 4:37 |
| 2 | 9.8 | 6:48 | 4:37 |
| 3 | 9.8 | 6:48 | 4:37 |
| 4 | 9.8 | 6:49 | 4:37 |
| 5 | 9.8 | 6:50 | 4:37 |
| 6 | 9.8 | 6:51 | 4:37 |
| 7 | 9.8 | 6:52 | 4:37 |
| 8 | 9.7 | 6:52 | 4:37 |
| 9 | 9.7 | 6:53 | 4:37 |
| 10 | 9.7 | 6:54 | 4:37 |
| 11 | 9.7 | 6:55 | 4:37 |
| 12 | 9.7 | 6:55 | 4:37 |
| 13 | 9.7 | 6:56 | 4:38 |
| 14 | 9.7 | 6:57 | 4:38 |
| 15 | 9.7 | 6:57 | 4:38 |
| 16 | 9.7 | 6:58 | 4:38 |
| 17 | 9.7 | 6:58 | 4:39 |
| 18 | 9.7 | 6:59 | 4:39 |
| 19 | 9.7 | 7:00 | 4:39 |
| 20 | 9.7 | 7:00 | 4:40 |
| 21 | 9.7 | 7:01 | 4:40 |
| 22 | 9.7 | 7:01 | 4:41 |
| 23 | 9.7 | 7:02 | 4:41 |
| 24 | 9.7 | 7:02 | 4:42 |
| 25 | 9.7 | 7:02 | 4:42 |
| 26 | 9.7 | 7:03 | 4:43 |
| 27 | 9.7 | 7:03 | 4:43 |
| 28 | 9.7 | 7:03 | 4:44 |
| 29 | 9.7 | 7:04 | 4:45 |
| 30 | 9.7 | 7:04 | 4:45 |
| 31 | 9.7 | 7:04 | 4:46 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.59 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 2.59 kWh/m² to a high of 5.57 kWh/m² in May across the year — December's 2.59 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) | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.6 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 2.8 | 2.8 | 2.8 |
| 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 | 2.6 | Moderate |
| 2 | 2.6 | Moderate |
| 3 | 2.6 | Moderate |
| 4 | 2.6 | Moderate |
| 5 | 2.6 | Moderate |
| 6 | 2.6 | Moderate |
| 7 | 2.6 | Moderate |
| 8 | 2.6 | Moderate |
| 9 | 2.6 | Moderate |
| 10 | 2.6 | Moderate |
| 11 | 2.6 | Moderate |
| 12 | 2.6 | Moderate |
| 13 | 2.6 | Moderate |
| 14 | 2.6 | Moderate |
| 15 | 2.6 | Moderate |
| 16 | 2.6 | Moderate |
| 17 | 2.6 | Moderate |
| 18 | 2.6 | Moderate |
| 19 | 2.6 | Moderate |
| 20 | 2.6 | Moderate |
| 21 | 2.6 | Moderate |
| 22 | 2.6 | Moderate |
| 23 | 2.7 | Moderate |
| 24 | 2.7 | Moderate |
| 25 | 2.7 | Moderate |
| 26 | 2.7 | Moderate |
| 27 | 2.7 | Moderate |
| 28 | 2.7 | Moderate |
| 29 | 2.8 | Moderate |
| 30 | 2.8 | Moderate |
| 31 | 2.8 | Moderate |
Hazard calendar for Ishiki
In December, Ishiki sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Ishiki sits in the Pacific typhoon belt; the season peaks July–October.
Is December a good time to visit Ishiki?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Ishiki.
What to pack for Ishiki in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Ishiki sees daytime highs around 12°C and nights near 8°C. Worth packing: a warm layer, rain gear and a windbreaker. About 9 days see rain.
Sea temperature near Ishiki in December
The nearest coast averages about 17°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 15 km away) is warmest in August at about 27°C and coldest in February near 13°C.
It's comfortable for a long swim from May 31 to Nov 9 — about 5.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 13 | 14 | 15 | 18 | 22 | 25 | 27 | 26 | 22 | 19 | 17 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 22 | Refreshing |
| Jul | 25 | Warm |
| Aug | 27 | Warm |
| Sep | 26 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Ishiki in December
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 Ishiki peaks around July 11 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 5 | 7 | 8 | 10 | 10 | 9 | 9 | 6 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Ishiki 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 Ishiki is worst in April — around 25 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (July, 15 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) | 17 | 19 | 25 | 25 | 24 | 20 | 15 | 15 | 16 | 18 | 18 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 19 | Moderate |
| Mar | 25 | Moderate |
| Apr | 25 | Moderate |
| May | 24 | Moderate |
| Jun | 20 | Moderate |
| Jul | 15 | Moderate |
| Aug | 15 | Moderate |
| Sep | 16 | Moderate |
| Oct | 18 | Moderate |
| Nov | 18 | Moderate |
| Dec | 16 | Moderate |
Where is Ishiki?
Ishiki sits at 34.8°N, 137.0°E, 0 m above sea level, in Japan. The nearest listed city is Nishio, 8.0 km away.
Topography around Ishiki
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ishiki.
Within 3 km, the terrain around Ishiki has only modest variations in elevation — a maximum elevation change of 9 m around an average of 1 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 349 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,462 m.
The land around Ishiki is covered by water (39%), artificial surfaces (31%) and cropland (20%) within 3 km, water (44%) and artificial surfaces (22%) within 16 km, and trees (43%) and water (33%) 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 Ishiki (34.8°, 137.0167°, elevation 0 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).