Muroran weather in June
In June, Muroran sees average daytime highs of 15°C and overnight lows near 12°C, with 104 mm of rain across 10.3 wet days and about 15 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.
Highs climb over the month, from about 14°C in the first days to 17°C by the end. The sky is clear or mostly clear about 22% of the time in June, and the air most often feels dry.
Daylight stretches from about 14 h 54 min at the start of June to 15 h 06 min by month's end. Set against the rest of the year, June is Muroran's 10th-clearest and 11th-windiest month. For the whole year in context, see Muroran's year-round climate.
- Daytime high
- 15°
- 4th warmest
- Overnight low
- 12°
- 9th coldest
- Rainfall
- 104 mm
- 10.3 wet days
- Daylight
- 15 h 06 min
- 4:04 AM – 7:09 PM
- Cloud cover
- 68%
- 10th clearest
- Wind
- 14 km/h
- 11th windiest
- Solar energy
- 5.25 kWh/m²
- Travel score
- 4.5
- out of 10
Muroran is city in Hokkaido, Japan.
- Density
- 1,187/km²
- people per km²
- Founded
- 1922
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in June
Highs climb over the month, from about 14°C in the first days to 17°C by the end.
A typical June day in Muroran reaches about 15°C in the afternoon and slips back to 12°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 18°C. Set against its neighbours, June runs about 5°C warmer than May and about 4°C cooler than July.
| 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) | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg low (°C) | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 13 | 10 |
| 2 | 14 | 10 |
| 3 | 14 | 11 |
| 4 | 14 | 11 |
| 5 | 14 | 11 |
| 6 | 14 | 11 |
| 7 | 14 | 11 |
| 8 | 14 | 11 |
| 9 | 14 | 12 |
| 10 | 15 | 12 |
| 11 | 15 | 12 |
| 12 | 15 | 12 |
| 13 | 15 | 12 |
| 14 | 15 | 12 |
| 15 | 15 | 12 |
| 16 | 15 | 13 |
| 17 | 16 | 13 |
| 18 | 16 | 13 |
| 19 | 16 | 13 |
| 20 | 16 | 13 |
| 21 | 16 | 13 |
| 22 | 16 | 13 |
| 23 | 16 | 14 |
| 24 | 17 | 14 |
| 25 | 17 | 14 |
| 26 | 17 | 14 |
| 27 | 17 | 14 |
| 28 | 17 | 14 |
| 29 | 17 | 14 |
| 30 | 17 | 15 |
How June really feels in Muroran
Once humidity and wind are folded in, June 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.
June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Muroran weather by month
How June compares with the rest of the year at a glance. June is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -1° / -4° | 50 | 8.5 | 10.1 | 9.3 | 0.0 |
| Feb | -0° / -4° | 43 | 7.4 | 7 | 10.3 | 0.0 |
| Mar | 2° / -1° | 57 | 9.1 | 6 | 11.6 | 0.0 |
| Apr | 6° / 2° | 76 | 9.1 | 1.5 | 13.1 | 0.5 |
| May | 11° / 7° | 112 | 11.1 | 0 | 14.4 | 2.5 |
| Jun | 15° / 12° | 104 | 10.3 | 0 | 15 | 4.5 |
| Jul | 20° / 17° | 153 | 13 | 0 | 14.8 | 5.6 |
| Aug | 22° / 19° | 181 | 12.6 | 0 | 13.7 | 6.0 |
| Sep | 20° / 17° | 166 | 13 | 0 | 12.3 | 5.8 |
| Oct | 14° / 11° | 103 | 10.9 | 0.1 | 10.8 | 4.2 |
| Nov | 7° / 4° | 80 | 11 | 1.7 | 9.6 | 1.0 |
| Dec | 2° / -1° | 69 | 11 | 9.7 | 9 | 0.0 |
Cloud cover in June
The sky is clear or mostly clear about 22% of the time in June.
Beyond those clear spells, partly cloudy skies cover about 13% of June, with mostly cloudy or overcast conditions the remaining 65%.
| 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 (%) | 42 | 42 | 41 | 41 | 41 | 40 | 39 | 39 | 38 | 36 | 36 | 35 | 34 | 34 | 34 | 33 | 33 | 34 | 34 | 33 | 33 | 33 | 32 | 32 | 32 | 33 | 33 | 32 | 33 | 33 |
| Cloudier (%) | 58 | 58 | 59 | 59 | 59 | 60 | 61 | 61 | 62 | 64 | 64 | 65 | 66 | 66 | 66 | 67 | 67 | 66 | 66 | 67 | 67 | 67 | 68 | 68 | 68 | 67 | 67 | 68 | 67 | 67 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 42 | 58 |
| 2 | 42 | 58 |
| 3 | 41 | 59 |
| 4 | 41 | 59 |
| 5 | 41 | 59 |
| 6 | 40 | 60 |
| 7 | 39 | 61 |
| 8 | 39 | 61 |
| 9 | 38 | 62 |
| 10 | 36 | 64 |
| 11 | 36 | 64 |
| 12 | 35 | 65 |
| 13 | 34 | 66 |
| 14 | 34 | 66 |
| 15 | 34 | 66 |
| 16 | 33 | 67 |
| 17 | 33 | 67 |
| 18 | 34 | 66 |
| 19 | 34 | 66 |
| 20 | 33 | 67 |
| 21 | 33 | 67 |
| 22 | 33 | 67 |
| 23 | 32 | 68 |
| 24 | 32 | 68 |
| 25 | 32 | 68 |
| 26 | 33 | 67 |
| 27 | 33 | 67 |
| 28 | 32 | 68 |
| 29 | 33 | 67 |
| 30 | 33 | 67 |
Chance of precipitation in June
Muroran gets around 104 mm of rain over 10.3 wet days in June. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 35% and peaks near 37% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 33 |
| 2 | 33 |
| 3 | 33 |
| 4 | 33 |
| 5 | 34 |
| 6 | 34 |
| 7 | 34 |
| 8 | 35 |
| 9 | 35 |
| 10 | 35 |
| 11 | 35 |
| 12 | 35 |
| 13 | 36 |
| 14 | 36 |
| 15 | 36 |
| 16 | 36 |
| 17 | 36 |
| 18 | 36 |
| 19 | 36 |
| 20 | 35 |
| 21 | 35 |
| 22 | 35 |
| 23 | 35 |
| 24 | 35 |
| 25 | 35 |
| 26 | 35 |
| 27 | 36 |
| 28 | 36 |
| 29 | 36 |
| 30 | 37 |
Humidity in June
Most of June feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the dry band about 65% 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 (%) | 98 | 97 | 96 | 95 | 93 | 92 | 90 | 88 | 86 | 83 | 81 | 78 | 74 | 72 | 69 | 66 | 62 | 60 | 56 | 53 | 50 | 47 | 44 | 41 | 38 | 35 | 32 | 30 | 28 | 26 |
| Comfortable (%) | 2 | 3 | 4 | 5 | 7 | 8 | 10 | 12 | 14 | 17 | 19 | 22 | 25 | 27 | 30 | 33 | 36 | 38 | 41 | 43 | 45 | 47 | 49 | 50 | 51 | 53 | 54 | 53 | 52 | 52 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | 11 | 12 | 14 | 17 | 19 | 21 |
| Muggy (%) | 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 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 98 | 2 | 0 | 0 |
| 2 | 97 | 3 | 0 | 0 |
| 3 | 96 | 4 | 0 | 0 |
| 4 | 95 | 5 | 0 | 0 |
| 5 | 93 | 7 | 0 | 0 |
| 6 | 92 | 8 | 0 | 0 |
| 7 | 90 | 10 | 0 | 0 |
| 8 | 88 | 12 | 0 | 0 |
| 9 | 86 | 14 | 0 | 0 |
| 10 | 83 | 17 | 0 | 0 |
| 11 | 81 | 19 | 0 | 0 |
| 12 | 78 | 22 | 0 | 0 |
| 13 | 74 | 25 | 1 | 0 |
| 14 | 72 | 27 | 1 | 0 |
| 15 | 69 | 30 | 1 | 0 |
| 16 | 66 | 33 | 1 | 0 |
| 17 | 62 | 36 | 2 | 0 |
| 18 | 60 | 38 | 2 | 0 |
| 19 | 56 | 41 | 3 | 0 |
| 20 | 53 | 43 | 4 | 0 |
| 21 | 50 | 45 | 5 | 0 |
| 22 | 47 | 47 | 6 | 0 |
| 23 | 44 | 49 | 7 | 0 |
| 24 | 41 | 50 | 9 | 0 |
| 25 | 38 | 51 | 11 | 0 |
| 26 | 35 | 53 | 12 | 0 |
| 27 | 32 | 54 | 14 | 0 |
| 28 | 30 | 53 | 17 | 0 |
| 29 | 28 | 52 | 19 | 1 |
| 30 | 26 | 52 | 21 | 1 |
Wind in June
Winds average 14 km/h in June.
Across June, daily wind ranges from about 13 km/h on the calmest days to 14 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) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| 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 | 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 | 13 | light breeze |
| 21 | 13 | light breeze |
| 22 | 13 | light breeze |
| 23 | 13 | light breeze |
| 24 | 13 | light breeze |
| 25 | 13 | light breeze |
| 26 | 13 | light breeze |
| 27 | 13 | light breeze |
| 28 | 13 | light breeze |
| 29 | 13 | light breeze |
| 30 | 13 | light breeze |
Sunrise & sunset in June
Daylight runs from about 14 h 54 min at the start of June to 15 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 12 minutes over June. Sunrise moves from 4:08 AM to 4:07 AM, and sunset from 6:59 PM to 7:11 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) | 14.9 | 14.9 | 14.9 | 14.9 | 14.9 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.0 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 | 15.1 |
| Sunrise (AM) | 4:08 | 4:07 | 4:07 | 4:07 | 4:06 | 4:06 | 4:05 | 4:05 | 4:05 | 4:05 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:04 | 4:05 | 4:05 | 4:05 | 4:05 | 4:06 | 4:06 | 4:06 | 4:07 | 4:07 |
| Sunset (PM) | 6:59 | 7:00 | 7:01 | 7:02 | 7:02 | 7:03 | 7:04 | 7:04 | 7:05 | 7:06 | 7:06 | 7:07 | 7:07 | 7:08 | 7:08 | 7:09 | 7:09 | 7:09 | 7:10 | 7:10 | 7:10 | 7:11 | 7:11 | 7:11 | 7:11 | 7:11 | 7:11 | 7:11 | 7:11 | 7:11 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.9 | 4:08 | 6:59 |
| 2 | 14.9 | 4:07 | 7:00 |
| 3 | 14.9 | 4:07 | 7:01 |
| 4 | 14.9 | 4:07 | 7:02 |
| 5 | 14.9 | 4:06 | 7:02 |
| 6 | 15.0 | 4:06 | 7:03 |
| 7 | 15.0 | 4:05 | 7:04 |
| 8 | 15.0 | 4:05 | 7:04 |
| 9 | 15.0 | 4:05 | 7:05 |
| 10 | 15.0 | 4:05 | 7:06 |
| 11 | 15.0 | 4:04 | 7:06 |
| 12 | 15.0 | 4:04 | 7:07 |
| 13 | 15.1 | 4:04 | 7:07 |
| 14 | 15.1 | 4:04 | 7:08 |
| 15 | 15.1 | 4:04 | 7:08 |
| 16 | 15.1 | 4:04 | 7:09 |
| 17 | 15.1 | 4:04 | 7:09 |
| 18 | 15.1 | 4:04 | 7:09 |
| 19 | 15.1 | 4:04 | 7:10 |
| 20 | 15.1 | 4:04 | 7:10 |
| 21 | 15.1 | 4:04 | 7:10 |
| 22 | 15.1 | 4:05 | 7:11 |
| 23 | 15.1 | 4:05 | 7:11 |
| 24 | 15.1 | 4:05 | 7:11 |
| 25 | 15.1 | 4:05 | 7:11 |
| 26 | 15.1 | 4:06 | 7:11 |
| 27 | 15.1 | 4:06 | 7:11 |
| 28 | 15.1 | 4:06 | 7:11 |
| 29 | 15.1 | 4:07 | 7:11 |
| 30 | 15.1 | 4:07 | 7:11 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 5.25 kWh/m².
For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.42 kWh/m² in May across the year — June's 5.25 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) | 5.5 | 5.5 | 5.5 | 5.5 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.3 | 5.2 | 5.2 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 |
| 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 | 5.5 | Bright |
| 2 | 5.5 | Bright |
| 3 | 5.5 | Bright |
| 4 | 5.5 | Bright |
| 5 | 5.4 | Bright |
| 6 | 5.4 | Bright |
| 7 | 5.4 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.3 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.3 | Bright |
| 12 | 5.2 | Bright |
| 13 | 5.2 | Bright |
| 14 | 5.2 | Bright |
| 15 | 5.2 | Bright |
| 16 | 5.2 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.1 | Bright |
| 21 | 5.1 | Bright |
| 22 | 5.1 | Bright |
| 23 | 5.1 | Bright |
| 24 | 5.1 | Bright |
| 25 | 5.1 | Bright |
| 26 | 5.0 | Bright |
| 27 | 5.0 | Bright |
| 28 | 5.0 | Bright |
| 29 | 5.0 | Bright |
| 30 | 5.0 | Bright |
Hazard calendar for Muroran
In June, Muroran sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Muroran sits in the Pacific typhoon belt; the season peaks July–October.
Muroran's rainy season runs May–October, when most of the year's rain falls.
Is June a good time to visit Muroran?
Our two travel scores rate June for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
June is a reasonable time to visit Muroran for sightseeing.
What to pack for Muroran in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Muroran sees daytime highs around 15°C and nights near 12°C. Worth packing: a warm layer, rain gear and sun protection. About 10 days see rain.
Sea temperature near Muroran in June
The nearest coast averages about 14°C in June — 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 9 to Sep 13 — about 1.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 6 | 4 | 4 | 6 | 9 | 14 | 18 | 21 | 20 | 17 | 12 | 9 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 4 | Bracing |
| Mar | 4 | Bracing |
| Apr | 6 | Bracing |
| May | 9 | Bracing |
| Jun | 14 | Bracing |
| Jul | 18 | Cool |
| Aug | 21 | Refreshing |
| Sep | 20 | Refreshing |
| Oct | 17 | Cool |
| Nov | 12 | Bracing |
| Dec | 9 | Bracing |
UV index in Muroran in June
Clear-sky midday UV in June peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Muroran 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 | 5 | 8 | 7 | 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 | 5 | High |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 5 | Moderate |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Muroran in June
Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.
Air quality in Muroran is worst in April — around 17 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 6 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) | 8 | 11 | 16 | 17 | 14 | 9 | 8 | 8 | 8 | 9 | 8 | 6 |
| Level | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 11 | Good |
| Mar | 16 | Moderate |
| Apr | 17 | Moderate |
| May | 14 | Moderate |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 8 | Good |
| Sep | 8 | Good |
| Oct | 9 | Good |
| Nov | 8 | Good |
| Dec | 6 | Good |
Where is Muroran?
Muroran sits at 42.3°N, 141.0°E, 8 m above sea level, in Japan. The nearest listed city is Date, 19 km away.
Topography around Muroran
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Muroran.
Within 3 km, the terrain around Muroran has only modest variations in elevation — a maximum elevation change of 185 m around an average of 21 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 901 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,867 m.
The land around Muroran is covered by water (49%), trees (25%) and artificial surfaces (23%) within 3 km, water (76%) within 16 km, and trees (48%) and water (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 Muroran (42.3172°, 140.9881°, elevation 8 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).