Noboribetsu weather in April
In April, Noboribetsu sees average daytime highs of 7°C and overnight lows near 2°C, with 82 mm of precipitation across 10.8 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.
Highs climb over the month, from about 5°C in the first days to 9°C by the end. The sky is clear or mostly clear about 32% of the time in April, and the air most often feels dry.
Daylight stretches from about 12 h 24 min at the start of April to 13 h 48 min by month's end. Set against the rest of the year, April is Noboribetsu's 3rd-clearest and 7th-windiest month. For the whole year in context, see Noboribetsu's year-round climate.
- Daytime high
- 7°
- 7th warmest
- Overnight low
- 2°
- 6th coldest
- Precipitation
- 82 mm
- 10.8 wet days
- Daylight
- 13 h 12 min
- 5:01 AM – 6:10 PM
- Cloud cover
- 59%
- 3rd clearest
- Wind
- 13 km/h
- 7th windiest
- Solar energy
- 5.28 kWh/m²
- Travel score
- 0.9
- out of 10
Noboribetsu is city in Hokkaidō, Japan.
- Density
- 219/km²
- people per km²
- Founded
- 1970
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in April
Highs climb over the month, from about 5°C in the first days to 9°C by the end.
A typical April day in Noboribetsu reaches about 7°C in the afternoon and slips back to 2°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 10°C. Set against its neighbours, April runs about 5°C warmer than March and about 5°C cooler than May.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 10 |
| Avg low (°C) | -1 | -1 | -1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 5 | -1 |
| 2 | 5 | -1 |
| 3 | 5 | -1 |
| 4 | 5 | 0 |
| 5 | 5 | 0 |
| 6 | 5 | 0 |
| 7 | 6 | 0 |
| 8 | 6 | 0 |
| 9 | 6 | 0 |
| 10 | 6 | 1 |
| 11 | 6 | 1 |
| 12 | 6 | 1 |
| 13 | 7 | 1 |
| 14 | 7 | 1 |
| 15 | 7 | 1 |
| 16 | 7 | 2 |
| 17 | 7 | 2 |
| 18 | 8 | 2 |
| 19 | 8 | 2 |
| 20 | 8 | 2 |
| 21 | 8 | 3 |
| 22 | 8 | 3 |
| 23 | 8 | 3 |
| 24 | 9 | 3 |
| 25 | 9 | 3 |
| 26 | 9 | 4 |
| 27 | 9 | 4 |
| 28 | 9 | 4 |
| 29 | 9 | 4 |
| 30 | 10 | 4 |
How April really feels in Noboribetsu
Once humidity and wind are folded in, April averages 0 days that feel above 32°C and 24 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in April is cold — wind chill drags the overnight "feels like" below the raw low.
Noboribetsu weather by month
How April compares with the rest of the year at a glance. April is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -2° / -7° | 47 | 7.1 | 8.2 | 9.2 | 0.0 |
| Feb | -1° / -7° | 45 | 6.9 | 7.7 | 10.3 | 0.0 |
| Mar | 2° / -4° | 64 | 9.8 | 8.7 | 11.6 | 0.0 |
| Apr | 7° / 2° | 82 | 10.8 | 3.1 | 13.1 | 0.9 |
| May | 12° / 7° | 113 | 12.2 | 0.1 | 14.4 | 3.0 |
| Jun | 16° / 12° | 98 | 10.6 | 0 | 15 | 4.7 |
| Jul | 20° / 16° | 143 | 13.3 | 0 | 14.8 | 5.5 |
| Aug | 22° / 18° | 194 | 13.9 | 0 | 13.7 | 5.8 |
| Sep | 20° / 15° | 177 | 13.5 | 0 | 12.3 | 5.6 |
| Oct | 14° / 8° | 114 | 11.1 | 0.1 | 10.8 | 4.0 |
| Nov | 7° / 2° | 84 | 10.4 | 2.8 | 9.6 | 0.9 |
| Dec | 1° / -5° | 64 | 8.8 | 8.6 | 8.9 | 0.0 |
Cloud cover in April
The sky is clear or mostly clear about 32% of the time in April.
Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 51%.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 52 | 53 | 52 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 49 | 50 | 49 | 48 | 48 | 49 | 48 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 48 | 48 | 47 | 46 | 46 |
| Cloudier (%) | 48 | 47 | 48 | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 50 | 51 | 50 | 51 | 52 | 52 | 51 | 52 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 52 | 52 | 53 | 54 | 54 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 52 | 48 |
| 2 | 53 | 47 |
| 3 | 52 | 48 |
| 4 | 51 | 49 |
| 5 | 51 | 49 |
| 6 | 50 | 50 |
| 7 | 50 | 50 |
| 8 | 50 | 50 |
| 9 | 50 | 50 |
| 10 | 50 | 50 |
| 11 | 50 | 50 |
| 12 | 49 | 51 |
| 13 | 50 | 50 |
| 14 | 49 | 51 |
| 15 | 48 | 52 |
| 16 | 48 | 52 |
| 17 | 49 | 51 |
| 18 | 48 | 52 |
| 19 | 49 | 51 |
| 20 | 49 | 51 |
| 21 | 49 | 51 |
| 22 | 49 | 51 |
| 23 | 49 | 51 |
| 24 | 49 | 51 |
| 25 | 49 | 51 |
| 26 | 48 | 52 |
| 27 | 48 | 52 |
| 28 | 47 | 53 |
| 29 | 46 | 54 |
| 30 | 46 | 54 |
Chance of precipitation in April
Noboribetsu gets around 82 mm of rain and snow over 10.8 wet days in April. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 36% and peaks near 39% on the wettest days, and about 3 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 33 | 33 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 39 |
| Snow chance (%) | 19 | 18 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 3 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 33 | 19 |
| 2 | 33 | 18 |
| 3 | 34 | 17 |
| 4 | 34 | 16 |
| 5 | 34 | 16 |
| 6 | 35 | 15 |
| 7 | 35 | 14 |
| 8 | 35 | 14 |
| 9 | 35 | 13 |
| 10 | 36 | 12 |
| 11 | 36 | 12 |
| 12 | 36 | 12 |
| 13 | 36 | 11 |
| 14 | 36 | 11 |
| 15 | 37 | 11 |
| 16 | 37 | 11 |
| 17 | 37 | 10 |
| 18 | 37 | 10 |
| 19 | 37 | 10 |
| 20 | 37 | 9 |
| 21 | 37 | 9 |
| 22 | 37 | 8 |
| 23 | 37 | 8 |
| 24 | 37 | 7 |
| 25 | 37 | 6 |
| 26 | 37 | 6 |
| 27 | 38 | 5 |
| 28 | 38 | 4 |
| 29 | 38 | 4 |
| 30 | 39 | 3 |
Humidity in April
Most of April feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, April lands in the dry band about 100% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
Wind in April
Winds average 13 km/h in April.
Across April, daily wind ranges from about 12 km/h on the calmest days to 13 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| 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 |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 13 | light breeze |
| 2 | 13 | light breeze |
| 3 | 13 | light breeze |
| 4 | 13 | light breeze |
| 5 | 13 | light breeze |
| 6 | 13 | light breeze |
| 7 | 13 | light breeze |
| 8 | 13 | light breeze |
| 9 | 13 | light breeze |
| 10 | 13 | light breeze |
| 11 | 13 | light breeze |
| 12 | 13 | light breeze |
| 13 | 13 | light breeze |
| 14 | 13 | light breeze |
| 15 | 13 | light breeze |
| 16 | 13 | light breeze |
| 17 | 13 | light breeze |
| 18 | 13 | light breeze |
| 19 | 12 | light breeze |
| 20 | 12 | light breeze |
| 21 | 12 | light breeze |
| 22 | 12 | light breeze |
| 23 | 12 | light breeze |
| 24 | 12 | light breeze |
| 25 | 12 | light breeze |
| 26 | 12 | light breeze |
| 27 | 12 | light breeze |
| 28 | 12 | light breeze |
| 29 | 12 | light breeze |
| 30 | 12 | light breeze |
Sunrise & sunset in April
Daylight runs from about 12 h 24 min at the start of April to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 84 minutes over April. Sunrise moves from 5:27 AM to 4:39 AM, and sunset from 5:53 PM to 6:26 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.4 | 12.5 | 12.5 | 12.6 | 12.6 | 12.7 | 12.7 | 12.8 | 12.8 | 12.9 | 12.9 | 13.0 | 13.0 | 13.1 | 13.1 | 13.2 | 13.2 | 13.2 | 13.3 | 13.3 | 13.4 | 13.4 | 13.5 | 13.5 | 13.6 | 13.6 | 13.7 | 13.7 | 13.7 | 13.8 |
| Sunrise (AM) | 5:27 | 5:25 | 5:23 | 5:22 | 5:20 | 5:18 | 5:16 | 5:15 | 5:13 | 5:11 | 5:09 | 5:08 | 5:06 | 5:04 | 5:03 | 5:01 | 4:59 | 4:58 | 4:56 | 4:54 | 4:53 | 4:51 | 4:50 | 4:48 | 4:47 | 4:45 | 4:44 | 4:42 | 4:41 | 4:39 |
| Sunset (PM) | 5:53 | 5:54 | 5:55 | 5:56 | 5:57 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:05 | 6:07 | 6:08 | 6:09 | 6:10 | 6:11 | 6:12 | 6:13 | 6:15 | 6:16 | 6:17 | 6:18 | 6:19 | 6:20 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.4 | 5:27 | 5:53 |
| 2 | 12.5 | 5:25 | 5:54 |
| 3 | 12.5 | 5:23 | 5:55 |
| 4 | 12.6 | 5:22 | 5:56 |
| 5 | 12.6 | 5:20 | 5:57 |
| 6 | 12.7 | 5:18 | 5:59 |
| 7 | 12.7 | 5:16 | 6:00 |
| 8 | 12.8 | 5:15 | 6:01 |
| 9 | 12.8 | 5:13 | 6:02 |
| 10 | 12.9 | 5:11 | 6:03 |
| 11 | 12.9 | 5:09 | 6:04 |
| 12 | 13.0 | 5:08 | 6:05 |
| 13 | 13.0 | 5:06 | 6:07 |
| 14 | 13.1 | 5:04 | 6:08 |
| 15 | 13.1 | 5:03 | 6:09 |
| 16 | 13.2 | 5:01 | 6:10 |
| 17 | 13.2 | 4:59 | 6:11 |
| 18 | 13.2 | 4:58 | 6:12 |
| 19 | 13.3 | 4:56 | 6:13 |
| 20 | 13.3 | 4:54 | 6:15 |
| 21 | 13.4 | 4:53 | 6:16 |
| 22 | 13.4 | 4:51 | 6:17 |
| 23 | 13.5 | 4:50 | 6:18 |
| 24 | 13.5 | 4:48 | 6:19 |
| 25 | 13.6 | 4:47 | 6:20 |
| 26 | 13.6 | 4:45 | 6:22 |
| 27 | 13.7 | 4:44 | 6:23 |
| 28 | 13.7 | 4:42 | 6:24 |
| 29 | 13.7 | 4:41 | 6:25 |
| 30 | 13.8 | 4:39 | 6:26 |
Solar energy in April
Average shortwave solar energy reaching the ground each day in April, about 5.28 kWh/m².
For context, solar energy here swings from a low near 1.74 kWh/m² to a high of 5.48 kWh/m² in May across the year — April's 5.28 kWh/m² sits near the top of that range.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.0 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.0 | Bright |
| 2 | 5.0 | Bright |
| 3 | 5.0 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.1 | Bright |
| 8 | 5.2 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.2 | Bright |
| 11 | 5.2 | Bright |
| 12 | 5.2 | Bright |
| 13 | 5.2 | Bright |
| 14 | 5.2 | Bright |
| 15 | 5.3 | Bright |
| 16 | 5.3 | Bright |
| 17 | 5.3 | Bright |
| 18 | 5.3 | Bright |
| 19 | 5.3 | Bright |
| 20 | 5.3 | Bright |
| 21 | 5.3 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.4 | Bright |
| 25 | 5.4 | Bright |
| 26 | 5.4 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.4 | Bright |
| 29 | 5.5 | Bright |
| 30 | 5.5 | Bright |
Hazard calendar for Noboribetsu
In April, Noboribetsu sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Noboribetsu sits in the Pacific typhoon belt; the season peaks July–October.
Noboribetsu's rainy season runs May–October, when most of the year's rain falls.
Is April a good time to visit Noboribetsu?
Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
April is a weaker month for outdoor sightseeing in Noboribetsu.
What to pack for Noboribetsu in April
From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In April, Noboribetsu sees daytime highs around 7°C and nights near 2°C. Pack a warm layer. Worth having: a heavy coat, rain gear and sun protection. About 11 days see rain.
Sea temperature near Noboribetsu in April
The nearest coast averages about 6°C in April — 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 21°C and coldest in February near 4°C.
It's comfortable for a long swim from Aug 12 to Sep 10 — about 1 month when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 7 | 4 | 4 | 6 | 9 | 13 | 18 | 21 | 20 | 16 | 13 | 10 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 7 | Bracing |
| Feb | 4 | Bracing |
| Mar | 4 | Bracing |
| Apr | 6 | Bracing |
| May | 9 | Bracing |
| Jun | 13 | Bracing |
| Jul | 18 | Cool |
| Aug | 21 | Refreshing |
| Sep | 20 | Cool |
| Oct | 16 | Cool |
| Nov | 13 | Bracing |
| Dec | 10 | Bracing |
UV index in Noboribetsu in April
Clear-sky midday UV in April 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 Noboribetsu peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 6 | 8 | 6 | 5 | 9 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | High | Moderate | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 3 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Noboribetsu in April
Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.
Air quality in Noboribetsu is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 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) | 10 | 14 | 19 | 20 | 18 | 12 | 11 | 10 | 9 | 11 | 9 | 8 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 14 | Moderate |
| Mar | 19 | Moderate |
| Apr | 20 | Moderate |
| May | 18 | Moderate |
| Jun | 12 | Moderate |
| Jul | 11 | Good |
| Aug | 10 | Good |
| Sep | 9 | Good |
| Oct | 11 | Good |
| Nov | 9 | Good |
| Dec | 8 | Good |
Where is Noboribetsu?
Noboribetsu sits at 42.5°N, 141.2°E, 10 m above sea level, in Japan. The nearest listed city is Shiraoi, 18 km away.
Topography around Noboribetsu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Noboribetsu.
Within 3 km, the terrain around Noboribetsu has significant variations in elevation — a maximum elevation change of 289 m around an average of 43 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,217 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,867 m.
The land around Noboribetsu is covered by trees (46%) and water (40%) within 3 km, water (48%) and trees (46%) within 16 km, and trees (46%) and water (42%) 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 Noboribetsu (42.4522°, 141.1791°, elevation 10 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).