Masuda weather in December
In December, Masuda sees average daytime highs of 11°C and overnight lows near 8°C, with 145 mm of precipitation across 17.3 wet days and about 9.7 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 13°C in the first days to 10°C by the end. The sky is clear or mostly clear about 15% 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 Masuda's 8th-clearest and 2nd-windiest month. For the whole year in context, see Masuda's year-round climate.
- Daytime high
- 11°
- 10th warmest
- Overnight low
- 8°
- 4th coldest
- Precipitation
- 145 mm
- 17.3 wet days
- Daylight
- 9 h 42 min
- 7:18 AM – 4:59 PM
- Cloud cover
- 65%
- 8th clearest
- Wind
- 21 km/h
- 2nd windiest
- Solar energy
- 2.01 kWh/m²
- Travel score
- 2.3
- out of 10
Masuda is city in Shimane Prefecture, Japan.
- Density
- 61/km²
- people per km²
- Founded
- 1952
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Highs ease over the month, from about 13°C in the first days to 10°C by the end.
A typical December day in Masuda reaches about 11°C in the afternoon and slips back to 8°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 7°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) | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Avg low (°C) | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 13 | 10 |
| 2 | 13 | 10 |
| 3 | 13 | 10 |
| 4 | 13 | 10 |
| 5 | 12 | 9 |
| 6 | 12 | 9 |
| 7 | 12 | 9 |
| 8 | 12 | 9 |
| 9 | 12 | 9 |
| 10 | 12 | 9 |
| 11 | 11 | 8 |
| 12 | 11 | 8 |
| 13 | 11 | 8 |
| 14 | 11 | 8 |
| 15 | 11 | 8 |
| 16 | 11 | 8 |
| 17 | 11 | 8 |
| 18 | 11 | 8 |
| 19 | 11 | 8 |
| 20 | 10 | 8 |
| 21 | 10 | 7 |
| 22 | 10 | 7 |
| 23 | 10 | 7 |
| 24 | 10 | 7 |
| 25 | 10 | 7 |
| 26 | 10 | 7 |
| 27 | 10 | 7 |
| 28 | 10 | 7 |
| 29 | 10 | 7 |
| 30 | 10 | 7 |
| 31 | 10 | 7 |
Masuda weather by month
How December compares with the rest of the year at a glance. December is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 6° | 144 | 18.2 | 3.8 | 9.9 | 1.2 |
| Feb | 9° / 6° | 121 | 15.2 | 3.1 | 10.7 | 1.5 |
| Mar | 12° / 8° | 145 | 13.9 | 0.8 | 11.7 | 2.7 |
| Apr | 15° / 12° | 124 | 11.6 | 0 | 12.8 | 4.6 |
| May | 19° / 16° | 131 | 10.6 | 0 | 13.8 | 6.1 |
| Jun | 22° / 20° | 196 | 12.8 | 0 | 14.3 | 6.0 |
| Jul | 26° / 24° | 227 | 12.8 | 0 | 14.1 | 6.1 |
| Aug | 28° / 25° | 134 | 11.2 | 0 | 13.3 | 6.2 |
| Sep | 25° / 22° | 180 | 12 | 0 | 12.2 | 6.5 |
| Oct | 20° / 18° | 111 | 10.1 | 0 | 11.1 | 6.5 |
| Nov | 16° / 13° | 108 | 12 | 0 | 10.2 | 4.7 |
| Dec | 11° / 8° | 145 | 17.3 | 1.7 | 9.7 | 2.3 |
Cloud cover in December
The sky is clear or mostly clear about 15% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over 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 (%) | 45 | 43 | 44 | 42 | 42 | 40 | 40 | 40 | 39 | 39 | 38 | 37 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 35 |
| Cloudier (%) | 55 | 57 | 56 | 58 | 58 | 60 | 60 | 60 | 61 | 61 | 62 | 63 | 62 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 65 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 45 | 55 |
| 2 | 43 | 57 |
| 3 | 44 | 56 |
| 4 | 42 | 58 |
| 5 | 42 | 58 |
| 6 | 40 | 60 |
| 7 | 40 | 60 |
| 8 | 40 | 60 |
| 9 | 39 | 61 |
| 10 | 39 | 61 |
| 11 | 38 | 62 |
| 12 | 37 | 63 |
| 13 | 38 | 62 |
| 14 | 37 | 63 |
| 15 | 37 | 63 |
| 16 | 37 | 63 |
| 17 | 37 | 63 |
| 18 | 37 | 63 |
| 19 | 37 | 63 |
| 20 | 37 | 63 |
| 21 | 37 | 63 |
| 22 | 37 | 63 |
| 23 | 37 | 63 |
| 24 | 37 | 63 |
| 25 | 37 | 63 |
| 26 | 37 | 63 |
| 27 | 37 | 63 |
| 28 | 36 | 64 |
| 29 | 36 | 64 |
| 30 | 36 | 64 |
| 31 | 35 | 65 |
Chance of precipitation in December
Masuda gets around 145 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 55% and peaks near 57% on the wettest days, and about 2 days bring 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 (%) | 49 | 50 | 51 | 52 | 52 | 53 | 54 | 54 | 55 | 55 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 57 | 56 | 56 | 56 | 55 | 55 | 54 | 54 | 54 |
| Snow chance (%) | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 10 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 49 | 1 |
| 2 | 50 | 1 |
| 3 | 51 | 1 |
| 4 | 52 | 2 |
| 5 | 52 | 2 |
| 6 | 53 | 2 |
| 7 | 54 | 2 |
| 8 | 54 | 2 |
| 9 | 55 | 3 |
| 10 | 55 | 3 |
| 11 | 56 | 3 |
| 12 | 56 | 3 |
| 13 | 56 | 4 |
| 14 | 56 | 4 |
| 15 | 57 | 4 |
| 16 | 57 | 5 |
| 17 | 57 | 5 |
| 18 | 57 | 5 |
| 19 | 57 | 6 |
| 20 | 57 | 6 |
| 21 | 57 | 7 |
| 22 | 57 | 7 |
| 23 | 57 | 8 |
| 24 | 56 | 8 |
| 25 | 56 | 9 |
| 26 | 56 | 9 |
| 27 | 55 | 9 |
| 28 | 55 | 9 |
| 29 | 54 | 10 |
| 30 | 54 | 10 |
| 31 | 54 | 10 |
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 (%) | 97 | 98 | 98 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 97 | 3 |
| 2 | 98 | 2 |
| 3 | 98 | 2 |
| 4 | 98 | 2 |
| 5 | 98 | 2 |
| 6 | 98 | 2 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 99 | 1 |
| 10 | 99 | 1 |
| 11 | 99 | 1 |
| 12 | 99 | 1 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 100 | 0 |
| 16 | 100 | 0 |
| 17 | 100 | 0 |
| 18 | 100 | 0 |
| 19 | 100 | 0 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
| 31 | 100 | 0 |
Wind in December
Winds average 21 km/h in December.
Across December, daily wind ranges from about 19 km/h on the calmest days to 22 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) | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Feels | light breeze | light breeze | light breeze | light breeze | 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 | 19 | light breeze |
| 2 | 20 | light breeze |
| 3 | 20 | light breeze |
| 4 | 20 | light breeze |
| 5 | 20 | breezy |
| 6 | 20 | breezy |
| 7 | 20 | breezy |
| 8 | 21 | breezy |
| 9 | 21 | breezy |
| 10 | 21 | breezy |
| 11 | 21 | breezy |
| 12 | 21 | breezy |
| 13 | 21 | breezy |
| 14 | 21 | breezy |
| 15 | 21 | breezy |
| 16 | 21 | breezy |
| 17 | 21 | breezy |
| 18 | 21 | breezy |
| 19 | 22 | breezy |
| 20 | 22 | breezy |
| 21 | 22 | breezy |
| 22 | 22 | breezy |
| 23 | 22 | breezy |
| 24 | 22 | breezy |
| 25 | 22 | breezy |
| 26 | 22 | breezy |
| 27 | 22 | breezy |
| 28 | 22 | breezy |
| 29 | 22 | breezy |
| 30 | 22 | breezy |
| 31 | 22 | 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 7:07 AM to 7:25 AM, and sunset from 4:58 PM to 5:07 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 | 9.8 | 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 |
| Sunrise (AM) | 7:07 | 7:08 | 7:09 | 7:10 | 7:10 | 7:11 | 7:12 | 7:13 | 7:13 | 7:14 | 7:15 | 7:16 | 7:16 | 7:17 | 7:18 | 7:18 | 7:19 | 7:19 | 7:20 | 7:20 | 7:21 | 7:21 | 7:22 | 7:22 | 7:23 | 7:23 | 7:23 | 7:24 | 7:24 | 7:24 | 7:25 |
| Sunset (PM) | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:58 | 4:59 | 4:59 | 4:59 | 4:59 | 5:00 | 5:00 | 5:00 | 5:01 | 5:01 | 5:02 | 5:02 | 5:03 | 5:03 | 5:04 | 5:04 | 5:05 | 5:06 | 5:06 | 5:07 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.8 | 7:07 | 4:58 |
| 2 | 9.8 | 7:08 | 4:58 |
| 3 | 9.8 | 7:09 | 4:58 |
| 4 | 9.8 | 7:10 | 4:58 |
| 5 | 9.8 | 7:10 | 4:58 |
| 6 | 9.8 | 7:11 | 4:58 |
| 7 | 9.8 | 7:12 | 4:58 |
| 8 | 9.8 | 7:13 | 4:58 |
| 9 | 9.7 | 7:13 | 4:58 |
| 10 | 9.7 | 7:14 | 4:58 |
| 11 | 9.7 | 7:15 | 4:58 |
| 12 | 9.7 | 7:16 | 4:58 |
| 13 | 9.7 | 7:16 | 4:59 |
| 14 | 9.7 | 7:17 | 4:59 |
| 15 | 9.7 | 7:18 | 4:59 |
| 16 | 9.7 | 7:18 | 4:59 |
| 17 | 9.7 | 7:19 | 5:00 |
| 18 | 9.7 | 7:19 | 5:00 |
| 19 | 9.7 | 7:20 | 5:00 |
| 20 | 9.7 | 7:20 | 5:01 |
| 21 | 9.7 | 7:21 | 5:01 |
| 22 | 9.7 | 7:21 | 5:02 |
| 23 | 9.7 | 7:22 | 5:02 |
| 24 | 9.7 | 7:22 | 5:03 |
| 25 | 9.7 | 7:23 | 5:03 |
| 26 | 9.7 | 7:23 | 5:04 |
| 27 | 9.7 | 7:23 | 5:04 |
| 28 | 9.7 | 7:24 | 5:05 |
| 29 | 9.7 | 7:24 | 5:06 |
| 30 | 9.7 | 7:24 | 5:06 |
| 31 | 9.7 | 7:25 | 5:07 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 2.01 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 5.67 kWh/m² in May across the year — December's 2.01 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) | 2.2 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.1 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.1 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.2 | Moderate |
| 2 | 2.1 | Moderate |
| 3 | 2.1 | Moderate |
| 4 | 2.1 | Moderate |
| 5 | 2.1 | Moderate |
| 6 | 2.1 | Moderate |
| 7 | 2.1 | Moderate |
| 8 | 2.0 | Moderate |
| 9 | 2.0 | Moderate |
| 10 | 2.0 | Moderate |
| 11 | 2.0 | Moderate |
| 12 | 2.0 | Moderate |
| 13 | 2.0 | Dim |
| 14 | 2.0 | Dim |
| 15 | 2.0 | Dim |
| 16 | 2.0 | Dim |
| 17 | 2.0 | Dim |
| 18 | 2.0 | Dim |
| 19 | 2.0 | Dim |
| 20 | 2.0 | Dim |
| 21 | 2.0 | Dim |
| 22 | 2.0 | Moderate |
| 23 | 2.0 | Moderate |
| 24 | 2.0 | Moderate |
| 25 | 2.0 | Moderate |
| 26 | 2.0 | Moderate |
| 27 | 2.0 | Moderate |
| 28 | 2.1 | Moderate |
| 29 | 2.1 | Moderate |
| 30 | 2.1 | Moderate |
| 31 | 2.1 | Moderate |
Hazard calendar for Masuda
In December, Masuda sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Masuda sits in the Pacific typhoon belt; the season peaks July–October.
Is December a good time to visit Masuda?
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 Masuda.
What to pack for Masuda in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Masuda sees daytime highs around 11°C and nights near 8°C. Pack a warm layer and rain gear. Worth having: a windbreaker. About 17 days see rain.
Sea temperature near Masuda in December
The nearest coast averages about 18°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 21 km away) is warmest in August at about 27°C and coldest in February near 14°C.
It's comfortable for a long swim from Jun 9 to Nov 20 — 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) | 15 | 14 | 14 | 15 | 18 | 21 | 24 | 27 | 26 | 23 | 20 | 18 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Refreshing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 21 | Refreshing |
| Jul | 24 | Warm |
| Aug | 27 | Warm |
| Sep | 26 | Warm |
| Oct | 23 | Refreshing |
| Nov | 20 | Refreshing |
| Dec | 18 | Cool |
UV index in Masuda in December
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 Masuda peaks around July 14 at about 10 (extreme) — 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.
| 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 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | High |
| Apr | 7 | Very high |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Extreme |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Masuda 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 Masuda is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 10 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) | 14 | 17 | 22 | 22 | 20 | 17 | 13 | 12 | 11 | 10 | 12 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 17 | Moderate |
| Mar | 22 | Moderate |
| Apr | 22 | Moderate |
| May | 20 | Moderate |
| Jun | 17 | Moderate |
| Jul | 13 | Moderate |
| Aug | 12 | Moderate |
| Sep | 11 | Good |
| Oct | 10 | Good |
| Nov | 12 | Moderate |
| Dec | 12 | Good |
Where is Masuda?
Masuda sits at 34.7°N, 131.8°E, 14 m above sea level, in Japan. The nearest listed city is Hamada, 32 km away.
Topography around Masuda
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Masuda.
Within 3 km, the terrain around Masuda has only modest variations in elevation — a maximum elevation change of 246 m around an average of 72 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 872 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,326 m.
The land around Masuda is covered by trees (72%) within 3 km, trees (69%) and water (27%) within 16 km, and trees (55%) and water (40%) 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 Masuda (34.6667°, 131.85°, elevation 14 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).