Nagai weather in June
In June, Nagai sees average daytime highs of 22°C and overnight lows near 14°C, with 155 mm of rain across 15.2 wet days and about 14.6 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.
Highs climb over the month, from about 21°C in the first days to 23°C by the end. The sky is clear or mostly clear about 13% of the time in June, and the air most often feels comfortable.
Daylight stretches from about 14 h 24 min at the start of June to 14 h 36 min by month's end. Set against the rest of the year, June is Nagai's 9th-clearest and 9th-windiest month. For the whole year in context, see Nagai's year-round climate.
- Daytime high
- 22°
- 4th warmest
- Overnight low
- 14°
- 9th coldest
- Rainfall
- 155 mm
- 15.2 wet days
- Daylight
- 14 h 36 min
- 4:21 AM – 6:59 PM
- Cloud cover
- 77%
- 9th clearest
- Wind
- 7 km/h
- 9th windiest
- Solar energy
- 4.95 kWh/m²
- Travel score
- 5.4
- out of 10
Nagai is city in Yamagata Prefecture, Japan.
- Density
- 145/km²
- people per km²
- Founded
- 1954
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in June
Highs climb over the month, from about 21°C in the first days to 23°C by the end.
A typical June day in Nagai reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, June runs about 4°C warmer than May and about 3°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) | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 20 | 12 |
| 2 | 20 | 12 |
| 3 | 21 | 12 |
| 4 | 21 | 12 |
| 5 | 21 | 12 |
| 6 | 21 | 13 |
| 7 | 21 | 13 |
| 8 | 21 | 13 |
| 9 | 21 | 13 |
| 10 | 21 | 13 |
| 11 | 21 | 13 |
| 12 | 21 | 14 |
| 13 | 21 | 14 |
| 14 | 21 | 14 |
| 15 | 22 | 14 |
| 16 | 22 | 14 |
| 17 | 22 | 14 |
| 18 | 22 | 15 |
| 19 | 22 | 15 |
| 20 | 22 | 15 |
| 21 | 22 | 15 |
| 22 | 22 | 15 |
| 23 | 22 | 15 |
| 24 | 22 | 16 |
| 25 | 22 | 16 |
| 26 | 23 | 16 |
| 27 | 23 | 16 |
| 28 | 23 | 16 |
| 29 | 23 | 16 |
| 30 | 23 | 17 |
How June really feels in Nagai
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.
Nagai weather by month
How June compares with the rest of the year at a glance. June is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 0° / -5° | 190 | 24.4 | 25.2 | 9.7 | 0.0 |
| Feb | 1° / -5° | 137 | 20.6 | 20.5 | 10.5 | 0.0 |
| Mar | 5° / -2° | 146 | 19.4 | 15.6 | 11.7 | 0.2 |
| Apr | 11° / 3° | 115 | 15.1 | 4.4 | 13 | 2.5 |
| May | 18° / 9° | 116 | 14.2 | 0.1 | 14 | 5.1 |
| Jun | 22° / 14° | 155 | 15.2 | 0 | 14.6 | 5.4 |
| Jul | 25° / 18° | 241 | 19.9 | 0 | 14.4 | 5.1 |
| Aug | 26° / 19° | 183 | 17.4 | 0 | 13.5 | 5.4 |
| Sep | 22° / 15° | 155 | 15.3 | 0 | 12.3 | 5.5 |
| Oct | 16° / 9° | 139 | 14.3 | 0.1 | 11 | 4.5 |
| Nov | 10° / 2° | 134 | 17.5 | 5.5 | 9.9 | 1.7 |
| Dec | 3° / -3° | 181 | 23.2 | 19.2 | 9.4 | 0.0 |
Cloud cover in June
The sky is clear or mostly clear about 13% of the time in June.
Beyond those clear spells, partly cloudy skies cover about 12% of June, with mostly cloudy or overcast conditions the remaining 76%. 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 (%) | 35 | 35 | 34 | 33 | 32 | 32 | 31 | 30 | 30 | 29 | 27 | 26 | 25 | 24 | 23 | 23 | 22 | 21 | 20 | 20 | 20 | 20 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 16 |
| Cloudier (%) | 65 | 65 | 66 | 67 | 68 | 68 | 69 | 70 | 70 | 71 | 73 | 74 | 75 | 76 | 77 | 77 | 78 | 79 | 80 | 80 | 80 | 80 | 82 | 82 | 83 | 83 | 83 | 83 | 83 | 84 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 35 | 65 |
| 2 | 35 | 65 |
| 3 | 34 | 66 |
| 4 | 33 | 67 |
| 5 | 32 | 68 |
| 6 | 32 | 68 |
| 7 | 31 | 69 |
| 8 | 30 | 70 |
| 9 | 30 | 70 |
| 10 | 29 | 71 |
| 11 | 27 | 73 |
| 12 | 26 | 74 |
| 13 | 25 | 75 |
| 14 | 24 | 76 |
| 15 | 23 | 77 |
| 16 | 23 | 77 |
| 17 | 22 | 78 |
| 18 | 21 | 79 |
| 19 | 20 | 80 |
| 20 | 20 | 80 |
| 21 | 20 | 80 |
| 22 | 20 | 80 |
| 23 | 18 | 82 |
| 24 | 18 | 82 |
| 25 | 17 | 83 |
| 26 | 17 | 83 |
| 27 | 17 | 83 |
| 28 | 17 | 83 |
| 29 | 17 | 83 |
| 30 | 16 | 84 |
Chance of precipitation in June
Nagai gets around 155 mm of rain over 15.2 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 51% and peaks near 65% 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 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 62 | 62 | 63 | 64 | 65 |
| Rain chance (%) | |
|---|---|
| 1 | 40 |
| 2 | 40 |
| 3 | 41 |
| 4 | 41 |
| 5 | 42 |
| 6 | 43 |
| 7 | 43 |
| 8 | 44 |
| 9 | 45 |
| 10 | 46 |
| 11 | 47 |
| 12 | 48 |
| 13 | 49 |
| 14 | 50 |
| 15 | 51 |
| 16 | 52 |
| 17 | 53 |
| 18 | 54 |
| 19 | 54 |
| 20 | 55 |
| 21 | 56 |
| 22 | 57 |
| 23 | 58 |
| 24 | 59 |
| 25 | 60 |
| 26 | 62 |
| 27 | 62 |
| 28 | 63 |
| 29 | 64 |
| 30 | 65 |
Humidity in June
Most of June feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, June lands in the comfortable band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 6% 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 (%) | 72 | 69 | 67 | 65 | 62 | 58 | 55 | 53 | 49 | 46 | 43 | 39 | 36 | 34 | 31 | 28 | 26 | 24 | 22 | 20 | 18 | 16 | 15 | 13 | 12 | 10 | 9 | 8 | 7 | 6 |
| Comfortable (%) | 25 | 27 | 29 | 30 | 32 | 34 | 36 | 37 | 39 | 40 | 41 | 42 | 43 | 43 | 43 | 43 | 42 | 41 | 41 | 40 | 38 | 37 | 36 | 34 | 33 | 31 | 29 | 28 | 26 | 25 |
| Humid (%) | 3 | 4 | 4 | 5 | 6 | 7 | 8 | 9 | 11 | 13 | 15 | 17 | 19 | 22 | 24 | 26 | 29 | 31 | 33 | 35 | 36 | 38 | 39 | 41 | 42 | 43 | 43 | 44 | 44 | 44 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 6 | 7 | 9 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
| Oppressive (%) | 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 (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 72 | 25 | 3 | 0 | 0 |
| 2 | 69 | 27 | 4 | 0 | 0 |
| 3 | 67 | 29 | 4 | 0 | 0 |
| 4 | 65 | 30 | 5 | 0 | 0 |
| 5 | 62 | 32 | 6 | 0 | 0 |
| 6 | 58 | 34 | 7 | 1 | 0 |
| 7 | 55 | 36 | 8 | 1 | 0 |
| 8 | 53 | 37 | 9 | 1 | 0 |
| 9 | 49 | 39 | 11 | 1 | 0 |
| 10 | 46 | 40 | 13 | 1 | 0 |
| 11 | 43 | 41 | 15 | 1 | 0 |
| 12 | 39 | 42 | 17 | 1 | 0 |
| 13 | 36 | 43 | 19 | 2 | 0 |
| 14 | 34 | 43 | 22 | 2 | 0 |
| 15 | 31 | 43 | 24 | 2 | 0 |
| 16 | 28 | 43 | 26 | 3 | 0 |
| 17 | 26 | 42 | 29 | 3 | 0 |
| 18 | 24 | 41 | 31 | 4 | 0 |
| 19 | 22 | 41 | 33 | 5 | 0 |
| 20 | 20 | 40 | 35 | 6 | 0 |
| 21 | 18 | 38 | 36 | 7 | 0 |
| 22 | 16 | 37 | 38 | 9 | 0 |
| 23 | 15 | 36 | 39 | 10 | 0 |
| 24 | 13 | 34 | 41 | 12 | 0 |
| 25 | 12 | 33 | 42 | 14 | 0 |
| 26 | 10 | 31 | 43 | 16 | 0 |
| 27 | 9 | 29 | 43 | 18 | 0 |
| 28 | 8 | 28 | 44 | 20 | 0 |
| 29 | 7 | 26 | 44 | 22 | 1 |
| 30 | 6 | 25 | 44 | 24 | 1 |
Wind in June
Winds average 7 km/h in June.
Across June, daily wind ranges from about 7 km/h on the calmest days to 7 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) | 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 | 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 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | 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 h 24 min at the start of June to 14 h 36 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 4:24 AM to 4:24 AM, and sunset from 6:51 PM to 7:02 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) | 14.4 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.7 | 14.7 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 | 14.6 |
| Sunrise (AM) | 4:24 | 4:24 | 4:23 | 4:23 | 4:23 | 4:22 | 4:22 | 4:22 | 4:22 | 4:22 | 4:21 | 4:21 | 4:21 | 4:21 | 4:21 | 4:21 | 4:21 | 4:21 | 4:21 | 4:22 | 4:22 | 4:22 | 4:22 | 4:22 | 4:23 | 4:23 | 4:23 | 4:24 | 4:24 | 4:24 |
| Sunset (PM) | 6:51 | 6:51 | 6:52 | 6:53 | 6:53 | 6:54 | 6:55 | 6:55 | 6:56 | 6:56 | 6:57 | 6:57 | 6:58 | 6:58 | 6:59 | 6:59 | 6:59 | 7:00 | 7:00 | 7:00 | 7:01 | 7:01 | 7:01 | 7:01 | 7:01 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.4 | 4:24 | 6:51 |
| 2 | 14.5 | 4:24 | 6:51 |
| 3 | 14.5 | 4:23 | 6:52 |
| 4 | 14.5 | 4:23 | 6:53 |
| 5 | 14.5 | 4:23 | 6:53 |
| 6 | 14.5 | 4:22 | 6:54 |
| 7 | 14.5 | 4:22 | 6:55 |
| 8 | 14.6 | 4:22 | 6:55 |
| 9 | 14.6 | 4:22 | 6:56 |
| 10 | 14.6 | 4:22 | 6:56 |
| 11 | 14.6 | 4:21 | 6:57 |
| 12 | 14.6 | 4:21 | 6:57 |
| 13 | 14.6 | 4:21 | 6:58 |
| 14 | 14.6 | 4:21 | 6:58 |
| 15 | 14.6 | 4:21 | 6:59 |
| 16 | 14.6 | 4:21 | 6:59 |
| 17 | 14.6 | 4:21 | 6:59 |
| 18 | 14.6 | 4:21 | 7:00 |
| 19 | 14.6 | 4:21 | 7:00 |
| 20 | 14.6 | 4:22 | 7:00 |
| 21 | 14.6 | 4:22 | 7:01 |
| 22 | 14.7 | 4:22 | 7:01 |
| 23 | 14.7 | 4:22 | 7:01 |
| 24 | 14.6 | 4:22 | 7:01 |
| 25 | 14.6 | 4:23 | 7:01 |
| 26 | 14.6 | 4:23 | 7:02 |
| 27 | 14.6 | 4:23 | 7:02 |
| 28 | 14.6 | 4:24 | 7:02 |
| 29 | 14.6 | 4:24 | 7:02 |
| 30 | 14.6 | 4:24 | 7:02 |
Solar energy in June
Average shortwave solar energy reaching the ground each day in June, about 4.95 kWh/m².
For context, solar energy here swings from a low near 1.82 kWh/m² to a high of 5.35 kWh/m² in May across the year — June's 4.95 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 | 5.3 | 5.3 | 5.2 | 5.2 | 5.1 | 5.1 | 5.0 | 5.0 | 4.9 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.4 | 4.3 |
| 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 | 5.3 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.2 | Bright |
| 10 | 5.2 | Bright |
| 11 | 5.1 | Bright |
| 12 | 5.1 | Bright |
| 13 | 5.0 | Bright |
| 14 | 5.0 | Bright |
| 15 | 4.9 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.8 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.5 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.3 | Bright |
Hazard calendar for Nagai
In June, Nagai sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Nagai sits in the Pacific typhoon belt; the season peaks July–October.
Is June a good time to visit Nagai?
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 Nagai for sightseeing.
What to pack for Nagai in June
From June's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In June, Nagai sees daytime highs around 22°C and nights near 14°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.
Sea temperature near Nagai in June
The nearest coast averages about 20°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 58 km away) is warmest in August at about 26°C and coldest in March near 9°C.
It's comfortable for a long swim from Jun 21 to Oct 29 — about 4.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 12 | 10 | 9 | 11 | 15 | 20 | 23 | 26 | 25 | 22 | 18 | 15 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Warm | Refreshing | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 12 | Bracing |
| Feb | 10 | Bracing |
| Mar | 9 | Bracing |
| Apr | 11 | Bracing |
| May | 15 | Bracing |
| Jun | 20 | Cool |
| Jul | 23 | Refreshing |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 22 | Refreshing |
| Nov | 18 | Cool |
| Dec | 15 | Bracing |
UV index in Nagai in June
Clear-sky midday UV in June peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Nagai peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 8 | 8 | 9 | 10 | 8 | 5 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 9 | Very high |
| Aug | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Nagai 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 Nagai is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 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) | 11 | 14 | 21 | 22 | 21 | 16 | 14 | 12 | 12 | 12 | 11 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 14 | Moderate |
| Mar | 21 | Moderate |
| Apr | 22 | Moderate |
| May | 21 | Moderate |
| Jun | 16 | Moderate |
| Jul | 14 | Moderate |
| Aug | 12 | Moderate |
| Sep | 12 | Good |
| Oct | 12 | Good |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Nagai?
Nagai sits at 38.1°N, 140.0°E, 204 m above sea level, in Japan. The nearest listed city is Nanyō, 10 km away.
Topography around Nagai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nagai.
Within 3 km, the terrain around Nagai has significant variations in elevation — a maximum elevation change of 254 m around an average of 224 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,329 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.
The land around Nagai is covered by cropland (41%), trees (28%) and artificial surfaces (24%) within 3 km, trees (72%) and cropland (21%) within 16 km, and trees (74%) 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 Nagai (38.1036°, 140.035°, elevation 204 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).