Usuki weather in June
In June, Usuki sees average daytime highs of 27°C and overnight lows near 20°C, with 291 mm of rain across 16.4 wet days and about 14.1 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.
Highs climb over the month, from about 25°C in the first days to 28°C by the end. The sky is clear or mostly clear about 11% of the time in June, and the air most often feels muggy.
Daylight stretches from about 14 hours at the start of June to 14 h 12 min by month's end. Set against the rest of the year, June is Usuki's 12th-clearest and 12th-windiest month. For the whole year in context, see Usuki's year-round climate.
- Daytime high
- 27°
- 4th warmest
- Overnight low
- 20°
- 9th coldest
- Rainfall
- 291 mm
- 16.4 wet days
- Daylight
- 14 h 12 min
- 5:08 AM – 7:18 PM
- Cloud cover
- 81%
- 12th clearest
- Wind
- 7 km/h
- 12th windiest
- Solar energy
- 4.68 kWh/m²
- Travel score
- 5.2
- out of 10
Temperature in June
Highs climb over the month, from about 25°C in the first days to 28°C by the end.
A typical June day in Usuki reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, June runs about 3°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) | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 18 |
| 2 | 25 | 18 |
| 3 | 25 | 18 |
| 4 | 25 | 18 |
| 5 | 25 | 18 |
| 6 | 26 | 18 |
| 7 | 26 | 19 |
| 8 | 26 | 19 |
| 9 | 26 | 19 |
| 10 | 26 | 19 |
| 11 | 26 | 19 |
| 12 | 26 | 19 |
| 13 | 26 | 20 |
| 14 | 26 | 20 |
| 15 | 26 | 20 |
| 16 | 26 | 20 |
| 17 | 26 | 20 |
| 18 | 27 | 20 |
| 19 | 27 | 20 |
| 20 | 27 | 21 |
| 21 | 27 | 21 |
| 22 | 27 | 21 |
| 23 | 27 | 21 |
| 24 | 27 | 21 |
| 25 | 28 | 21 |
| 26 | 28 | 22 |
| 27 | 28 | 22 |
| 28 | 28 | 22 |
| 29 | 28 | 22 |
| 30 | 28 | 22 |
How June really feels in Usuki
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.
Usuki weather by month
How June compares with the rest of the year at a glance. June is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 11° / 3° | 56 | 5.4 | 0.4 | 10.1 | 2.9 |
| Feb | 12° / 3° | 64 | 7 | 0.6 | 10.8 | 3.3 |
| Mar | 15° / 6° | 97 | 10.2 | 0 | 11.7 | 4.7 |
| Apr | 20° / 11° | 117 | 10.2 | 0 | 12.8 | 6.2 |
| May | 24° / 15° | 141 | 10.9 | 0 | 13.7 | 6.6 |
| Jun | 27° / 20° | 291 | 16.4 | 0 | 14.1 | 5.2 |
| Jul | 31° / 24° | 217 | 16.4 | 0 | 14 | 3.8 |
| Aug | 31° / 24° | 207 | 17.4 | 0 | 13.2 | 3.6 |
| Sep | 28° / 21° | 229 | 14.6 | 0 | 12.2 | 5.4 |
| Oct | 23° / 15° | 150 | 8.4 | 0 | 11.2 | 7.2 |
| Nov | 18° / 10° | 79 | 6.9 | 0 | 10.3 | 6.2 |
| Dec | 13° / 5° | 56 | 5.7 | 0 | 9.9 | 4.1 |
Cloud cover in June
The sky is clear or mostly clear about 11% of the time in June, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 10% of June, with mostly cloudy or overcast conditions the remaining 79%. 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 32 | 31 | 31 | 29 | 28 | 27 | 27 | 26 | 25 | 25 | 24 | 22 | 22 | 21 | 21 | 20 | 19 | 19 | 17 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 17 | 17 | 17 |
| Cloudier (%) | 68 | 69 | 69 | 71 | 72 | 73 | 73 | 74 | 75 | 75 | 76 | 78 | 78 | 79 | 79 | 80 | 81 | 81 | 83 | 83 | 83 | 83 | 84 | 85 | 85 | 85 | 85 | 83 | 83 | 83 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 32 | 68 |
| 2 | 31 | 69 |
| 3 | 31 | 69 |
| 4 | 29 | 71 |
| 5 | 28 | 72 |
| 6 | 27 | 73 |
| 7 | 27 | 73 |
| 8 | 26 | 74 |
| 9 | 25 | 75 |
| 10 | 25 | 75 |
| 11 | 24 | 76 |
| 12 | 22 | 78 |
| 13 | 22 | 78 |
| 14 | 21 | 79 |
| 15 | 21 | 79 |
| 16 | 20 | 80 |
| 17 | 19 | 81 |
| 18 | 19 | 81 |
| 19 | 17 | 83 |
| 20 | 17 | 83 |
| 21 | 17 | 83 |
| 22 | 17 | 83 |
| 23 | 16 | 84 |
| 24 | 15 | 85 |
| 25 | 15 | 85 |
| 26 | 15 | 85 |
| 27 | 15 | 85 |
| 28 | 17 | 83 |
| 29 | 17 | 83 |
| 30 | 17 | 83 |
Chance of precipitation in June
Usuki gets around 291 mm of rain over 16.4 wet days in June, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 54% and peaks near 64% on the wettest days. The odds climb 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 53 | 54 | 55 | 57 | 58 | 59 | 60 | 60 | 61 | 62 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 63 |
| Rain chance (%) | |
|---|---|
| 1 | 40 |
| 2 | 41 |
| 3 | 42 |
| 4 | 43 |
| 5 | 44 |
| 6 | 45 |
| 7 | 46 |
| 8 | 47 |
| 9 | 48 |
| 10 | 49 |
| 11 | 50 |
| 12 | 51 |
| 13 | 53 |
| 14 | 54 |
| 15 | 55 |
| 16 | 57 |
| 17 | 58 |
| 18 | 59 |
| 19 | 60 |
| 20 | 60 |
| 21 | 61 |
| 22 | 62 |
| 23 | 63 |
| 24 | 63 |
| 25 | 64 |
| 26 | 64 |
| 27 | 64 |
| 28 | 64 |
| 29 | 64 |
| 30 | 63 |
Humidity in June
Most of June feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the muggy band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.
| 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 (%) | 14 | 12 | 11 | 9 | 8 | 6 | 5 | 4 | 3 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Comfortable (%) | 27 | 26 | 25 | 24 | 22 | 21 | 20 | 18 | 17 | 15 | 14 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 |
| Humid (%) | 38 | 39 | 40 | 40 | 40 | 41 | 40 | 40 | 40 | 39 | 38 | 36 | 35 | 33 | 31 | 29 | 27 | 25 | 23 | 22 | 20 | 18 | 16 | 14 | 12 | 10 | 9 | 8 | 7 | 6 |
| Muggy (%) | 19 | 20 | 22 | 24 | 25 | 27 | 29 | 31 | 32 | 34 | 36 | 38 | 40 | 42 | 43 | 44 | 44 | 45 | 45 | 45 | 44 | 44 | 43 | 42 | 41 | 39 | 37 | 35 | 33 | 31 |
| Oppressive (%) | 2 | 2 | 3 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 13 | 15 | 17 | 19 | 21 | 23 | 26 | 28 | 31 | 34 | 37 | 40 | 43 | 46 | 49 | 53 | 55 | 57 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 5 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| 1 | 14 | 27 | 38 | 19 | 2 | 0 |
| 2 | 12 | 26 | 39 | 20 | 2 | 0 |
| 3 | 11 | 25 | 40 | 22 | 3 | 0 |
| 4 | 9 | 24 | 40 | 24 | 3 | 0 |
| 5 | 8 | 22 | 40 | 25 | 4 | 0 |
| 6 | 6 | 21 | 41 | 27 | 5 | 0 |
| 7 | 5 | 20 | 40 | 29 | 6 | 0 |
| 8 | 4 | 18 | 40 | 31 | 7 | 0 |
| 9 | 3 | 17 | 40 | 32 | 8 | 0 |
| 10 | 2 | 15 | 39 | 34 | 9 | 0 |
| 11 | 2 | 14 | 38 | 36 | 10 | 0 |
| 12 | 1 | 12 | 36 | 38 | 12 | 0 |
| 13 | 1 | 11 | 35 | 40 | 13 | 0 |
| 14 | 1 | 10 | 33 | 42 | 15 | 0 |
| 15 | 0 | 9 | 31 | 43 | 17 | 0 |
| 16 | 0 | 8 | 29 | 44 | 19 | 0 |
| 17 | 0 | 7 | 27 | 44 | 21 | 1 |
| 18 | 0 | 6 | 25 | 45 | 23 | 1 |
| 19 | 0 | 5 | 23 | 45 | 26 | 1 |
| 20 | 0 | 4 | 22 | 45 | 28 | 1 |
| 21 | 0 | 4 | 20 | 44 | 31 | 1 |
| 22 | 0 | 3 | 18 | 44 | 34 | 1 |
| 23 | 0 | 3 | 16 | 43 | 37 | 1 |
| 24 | 0 | 2 | 14 | 42 | 40 | 2 |
| 25 | 0 | 2 | 12 | 41 | 43 | 2 |
| 26 | 0 | 2 | 10 | 39 | 46 | 2 |
| 27 | 0 | 1 | 9 | 37 | 49 | 3 |
| 28 | 0 | 1 | 8 | 35 | 53 | 3 |
| 29 | 0 | 1 | 7 | 33 | 55 | 4 |
| 30 | 0 | 1 | 6 | 31 | 57 | 5 |
Wind in June
Winds average 7 km/h in June, the calmest month.
Across June, daily wind ranges from about 7 km/h on the calmest days to 8 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) | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
Sunrise & sunset in June
Daylight runs from about 14 hours at the start of June to 14 h 12 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 5:10 AM to 5:11 AM, and sunset from 7:11 PM to 7:21 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) | 14.0 | 14.0 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.1 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 | 14.2 |
| Sunrise (AM) | 5:10 | 5:09 | 5:09 | 5:09 | 5:09 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:08 | 5:09 | 5:09 | 5:09 | 5:09 | 5:10 | 5:10 | 5:10 | 5:10 | 5:11 |
| Sunset (PM) | 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 | 7:18 | 7:18 | 7:18 | 7:19 | 7:19 | 7:19 | 7:20 | 7:20 | 7:20 | 7:20 | 7:20 | 7:21 | 7:21 | 7:21 | 7:21 | 7:21 | 7:21 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.0 | 5:10 | 7:11 |
| 2 | 14.0 | 5:09 | 7:12 |
| 3 | 14.1 | 5:09 | 7:12 |
| 4 | 14.1 | 5:09 | 7:13 |
| 5 | 14.1 | 5:09 | 7:13 |
| 6 | 14.1 | 5:08 | 7:14 |
| 7 | 14.1 | 5:08 | 7:14 |
| 8 | 14.1 | 5:08 | 7:15 |
| 9 | 14.1 | 5:08 | 7:15 |
| 10 | 14.1 | 5:08 | 7:16 |
| 11 | 14.1 | 5:08 | 7:16 |
| 12 | 14.2 | 5:08 | 7:17 |
| 13 | 14.2 | 5:08 | 7:17 |
| 14 | 14.2 | 5:08 | 7:18 |
| 15 | 14.2 | 5:08 | 7:18 |
| 16 | 14.2 | 5:08 | 7:18 |
| 17 | 14.2 | 5:08 | 7:19 |
| 18 | 14.2 | 5:08 | 7:19 |
| 19 | 14.2 | 5:08 | 7:19 |
| 20 | 14.2 | 5:08 | 7:20 |
| 21 | 14.2 | 5:08 | 7:20 |
| 22 | 14.2 | 5:09 | 7:20 |
| 23 | 14.2 | 5:09 | 7:20 |
| 24 | 14.2 | 5:09 | 7:20 |
| 25 | 14.2 | 5:09 | 7:21 |
| 26 | 14.2 | 5:10 | 7:21 |
| 27 | 14.2 | 5:10 | 7:21 |
| 28 | 14.2 | 5:10 | 7:21 |
| 29 | 14.2 | 5:10 | 7:21 |
| 30 | 14.2 | 5:11 | 7:21 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 4.68 kWh/m².
For context, solar energy here swings from a low near 2.49 kWh/m² to a high of 5.5 kWh/m² in May across the year — June's 4.68 kWh/m² falls in the middle.
| 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) | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 |
| 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 | 5.3 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.2 | Bright |
| 4 | 5.2 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.1 | Bright |
| 7 | 5.0 | Bright |
| 8 | 5.0 | Bright |
| 9 | 4.9 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.7 | Bright |
| 15 | 4.7 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.5 | Bright |
| 20 | 4.5 | Bright |
| 21 | 4.5 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.4 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.5 | Bright |
| 28 | 4.5 | Bright |
| 29 | 4.5 | Bright |
| 30 | 4.5 | Bright |
Hazard calendar for Usuki
In June, Usuki sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Usuki sits in the Pacific typhoon belt; the season peaks July–October.
Usuki's rainy season runs May–October, when most of the year's rain falls.
Is June a good time to visit Usuki?
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 Usuki for sightseeing.
What to pack for Usuki in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Usuki sees daytime highs around 27°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 16 days see rain.
Sea temperature near Usuki in June
The nearest coast averages about 21°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 km away) is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from Jun 5 to Nov 20 — about 5.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 14 | 14 | 16 | 18 | 21 | 24 | 26 | 25 | 23 | 20 | 18 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Refreshing | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 16 | Cool |
| May | 18 | Cool |
| Jun | 21 | Refreshing |
| Jul | 24 | Warm |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 23 | Refreshing |
| Nov | 20 | Refreshing |
| Dec | 18 | Cool |
UV index in Usuki in June
Clear-sky midday UV in June peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Usuki peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 5 | 6 | 7 | 8 | 10 | 10 | 9 | 10 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 5 | Moderate |
| Mar | 6 | High |
| Apr | 7 | Very high |
| May | 8 | Very high |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 10 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Usuki 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 Usuki is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 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) | 14 | 17 | 22 | 23 | 22 | 19 | 16 | 16 | 12 | 11 | 12 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 17 | Moderate |
| Mar | 22 | Moderate |
| Apr | 23 | Moderate |
| May | 22 | Moderate |
| Jun | 19 | Moderate |
| Jul | 16 | Moderate |
| Aug | 16 | Moderate |
| Sep | 12 | Moderate |
| Oct | 11 | Good |
| Nov | 12 | Moderate |
| Dec | 12 | Good |
Where is Usuki?
Usuki sits at 33.1°N, 131.8°E, 4 m above sea level, in Japan. The nearest listed city is Tsukumiura, 8.0 km away.
Topography around Usuki
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Usuki.
Within 3 km, the terrain around Usuki has significant variations in elevation — a maximum elevation change of 460 m around an average of 65 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 716 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,758 m.
The land around Usuki is covered by trees (56%) and water (21%) within 3 km, trees (61%) and water (27%) within 16 km, and water (49%) 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 Usuki (33.1234°, 131.804°, elevation 4 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).