Ishioka weather in August
In August, Ishioka sees average daytime highs of 30°C and overnight lows near 23°C, with 127 mm of rain across 13.6 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 20% of the time in August, and the air most often feels oppressive.
Daylight stretches from about 13 h 54 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Ishioka's 8th-clearest and 10th-windiest month. For the whole year in context, see Ishioka's year-round climate.
- Daytime high
- 30°
- 1st warmest
- Overnight low
- 23°
- 12th coldest
- Rainfall
- 127 mm
- 13.6 wet days
- Daylight
- 13 h 24 min
- 5:01 AM – 6:25 PM
- Cloud cover
- 68%
- 8th clearest
- Wind
- 9 km/h
- 10th windiest
- Solar energy
- 4.79 kWh/m²
- Travel score
- 4.5
- out of 10
Ishioka is city in Ibaraki Prefecture, Japan.
- Density
- 339/km²
- people per km²
- Founded
- 1954
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 30°C through the month.
A typical August day in Ishioka reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.
| 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) | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 24 |
| 2 | 30 | 24 |
| 3 | 30 | 24 |
| 4 | 31 | 24 |
| 5 | 31 | 24 |
| 6 | 31 | 24 |
| 7 | 31 | 24 |
| 8 | 31 | 24 |
| 9 | 31 | 24 |
| 10 | 30 | 24 |
| 11 | 30 | 24 |
| 12 | 30 | 24 |
| 13 | 30 | 24 |
| 14 | 30 | 24 |
| 15 | 30 | 24 |
| 16 | 30 | 24 |
| 17 | 30 | 24 |
| 18 | 30 | 24 |
| 19 | 30 | 23 |
| 20 | 30 | 23 |
| 21 | 30 | 23 |
| 22 | 30 | 23 |
| 23 | 30 | 23 |
| 24 | 30 | 23 |
| 25 | 29 | 23 |
| 26 | 29 | 23 |
| 27 | 29 | 23 |
| 28 | 29 | 23 |
| 29 | 29 | 23 |
| 30 | 29 | 23 |
| 31 | 29 | 23 |
How August really feels in Ishioka
Once humidity and wind are folded in, August averages 27 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Ishioka weather by month
How August compares with the rest of the year at a glance. August is the 1st-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 | 8° / 1° | 61 | 6.7 | 1.5 | 9.8 | 1.8 |
| Feb | 9° / 1° | 61 | 7.4 | 1.7 | 10.6 | 2.1 |
| Mar | 13° / 4° | 110 | 12.5 | 1 | 11.7 | 3.4 |
| Apr | 18° / 9° | 114 | 11.9 | 0.1 | 12.9 | 5.3 |
| May | 22° / 14° | 140 | 12.5 | 0 | 13.9 | 6.2 |
| Jun | 25° / 18° | 153 | 14.9 | 0 | 14.4 | 5.6 |
| Jul | 29° / 22° | 171 | 16.1 | 0 | 14.2 | 4.7 |
| Aug | 30° / 23° | 127 | 13.6 | 0 | 13.4 | 4.5 |
| Sep | 26° / 20° | 174 | 14.5 | 0 | 12.2 | 5.6 |
| Oct | 21° / 14° | 191 | 12.4 | 0 | 11.1 | 6.1 |
| Nov | 16° / 8° | 91 | 9.5 | 0 | 10.1 | 5.1 |
| Dec | 11° / 3° | 60 | 7.4 | 0.2 | 9.6 | 2.9 |
Cloud cover in August
The sky is clear or mostly clear about 20% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 63%.
| 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 (%) | 37 | 38 | 38 | 37 | 38 | 39 | 39 | 39 | 38 | 37 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 35 | 35 | 36 | 36 | 36 | 36 | 36 | 38 | 37 | 38 | 38 | 38 |
| Cloudier (%) | 63 | 62 | 62 | 63 | 62 | 61 | 61 | 61 | 62 | 63 | 63 | 63 | 63 | 63 | 63 | 64 | 64 | 64 | 64 | 65 | 65 | 64 | 64 | 64 | 64 | 64 | 62 | 63 | 62 | 62 | 62 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 37 | 63 |
| 2 | 38 | 62 |
| 3 | 38 | 62 |
| 4 | 37 | 63 |
| 5 | 38 | 62 |
| 6 | 39 | 61 |
| 7 | 39 | 61 |
| 8 | 39 | 61 |
| 9 | 38 | 62 |
| 10 | 37 | 63 |
| 11 | 37 | 63 |
| 12 | 37 | 63 |
| 13 | 37 | 63 |
| 14 | 37 | 63 |
| 15 | 37 | 63 |
| 16 | 36 | 64 |
| 17 | 36 | 64 |
| 18 | 36 | 64 |
| 19 | 36 | 64 |
| 20 | 35 | 65 |
| 21 | 35 | 65 |
| 22 | 36 | 64 |
| 23 | 36 | 64 |
| 24 | 36 | 64 |
| 25 | 36 | 64 |
| 26 | 36 | 64 |
| 27 | 38 | 62 |
| 28 | 37 | 63 |
| 29 | 38 | 62 |
| 30 | 38 | 62 |
| 31 | 38 | 62 |
Chance of precipitation in August
Ishioka gets around 127 mm of rain over 13.6 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 44% and peaks near 48% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 42 | 43 | 43 | 44 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 48 | 48 | 48 |
| Rain chance (%) | |
|---|---|
| 1 | 40 |
| 2 | 40 |
| 3 | 40 |
| 4 | 40 |
| 5 | 40 |
| 6 | 40 |
| 7 | 41 |
| 8 | 41 |
| 9 | 42 |
| 10 | 43 |
| 11 | 43 |
| 12 | 44 |
| 13 | 44 |
| 14 | 44 |
| 15 | 45 |
| 16 | 45 |
| 17 | 46 |
| 18 | 46 |
| 19 | 46 |
| 20 | 46 |
| 21 | 46 |
| 22 | 46 |
| 23 | 46 |
| 24 | 46 |
| 25 | 47 |
| 26 | 47 |
| 27 | 47 |
| 28 | 47 |
| 29 | 48 |
| 30 | 48 |
| 31 | 48 |
Humidity in August
Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the oppressive band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 93% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Humid (%) | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 11 |
| Muggy (%) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 28 | 29 |
| Oppressive (%) | 55 | 55 | 54 | 55 | 55 | 54 | 54 | 53 | 52 | 53 | 53 | 52 | 52 | 52 | 52 | 53 | 52 | 52 | 53 | 52 | 52 | 52 | 52 | 51 | 52 | 51 | 50 | 50 | 49 | 49 | 48 |
| Miserable (%) | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 25 | 24 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 15 | 15 | 14 | 13 | 12 | 11 | 11 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 0 | 6 | 13 | 55 | 26 |
| 2 | 0 | 6 | 13 | 55 | 26 |
| 3 | 0 | 6 | 13 | 54 | 27 |
| 4 | 0 | 5 | 13 | 55 | 27 |
| 5 | 0 | 5 | 13 | 55 | 27 |
| 6 | 0 | 5 | 13 | 54 | 28 |
| 7 | 0 | 5 | 13 | 54 | 28 |
| 8 | 0 | 5 | 14 | 53 | 28 |
| 9 | 0 | 6 | 14 | 52 | 28 |
| 10 | 0 | 6 | 14 | 53 | 27 |
| 11 | 0 | 5 | 15 | 53 | 27 |
| 12 | 1 | 5 | 15 | 52 | 27 |
| 13 | 1 | 5 | 16 | 52 | 26 |
| 14 | 1 | 5 | 16 | 52 | 26 |
| 15 | 1 | 5 | 17 | 52 | 25 |
| 16 | 1 | 5 | 17 | 53 | 24 |
| 17 | 1 | 6 | 17 | 52 | 24 |
| 18 | 1 | 6 | 18 | 52 | 23 |
| 19 | 1 | 6 | 18 | 53 | 22 |
| 20 | 1 | 7 | 19 | 52 | 21 |
| 21 | 1 | 7 | 20 | 52 | 20 |
| 22 | 1 | 7 | 21 | 52 | 19 |
| 23 | 1 | 7 | 22 | 52 | 18 |
| 24 | 1 | 8 | 23 | 51 | 17 |
| 25 | 1 | 8 | 24 | 52 | 15 |
| 26 | 1 | 8 | 25 | 51 | 15 |
| 27 | 1 | 9 | 26 | 50 | 14 |
| 28 | 1 | 9 | 27 | 50 | 13 |
| 29 | 1 | 10 | 28 | 49 | 12 |
| 30 | 1 | 10 | 28 | 49 | 11 |
| 31 | 1 | 11 | 29 | 48 | 11 |
Wind in August
Winds average 9 km/h in August.
Across August, daily wind ranges from about 8 km/h on the calmest days to 9 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) | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
| 31 | 9 | calm |
Sunrise & sunset in August
Daylight runs from about 13 h 54 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 66 minutes over August. Sunrise moves from 4:49 AM to 5:14 AM, and sunset from 6:41 PM to 6:04 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) | 13.9 | 13.8 | 13.8 | 13.8 | 13.7 | 13.7 | 13.7 | 13.6 | 13.6 | 13.6 | 13.6 | 13.5 | 13.5 | 13.5 | 13.4 | 13.4 | 13.4 | 13.3 | 13.3 | 13.2 | 13.2 | 13.2 | 13.1 | 13.1 | 13.1 | 13.0 | 13.0 | 13.0 | 12.9 | 12.9 | 12.8 |
| Sunrise (AM) | 4:49 | 4:50 | 4:51 | 4:52 | 4:52 | 4:53 | 4:54 | 4:55 | 4:56 | 4:57 | 4:57 | 4:58 | 4:59 | 5:00 | 5:01 | 5:01 | 5:02 | 5:03 | 5:04 | 5:05 | 5:06 | 5:06 | 5:07 | 5:08 | 5:09 | 5:10 | 5:10 | 5:11 | 5:12 | 5:13 | 5:14 |
| Sunset (PM) | 6:41 | 6:40 | 6:39 | 6:38 | 6:37 | 6:36 | 6:35 | 6:34 | 6:33 | 6:32 | 6:31 | 6:29 | 6:28 | 6:27 | 6:26 | 6:25 | 6:23 | 6:22 | 6:21 | 6:20 | 6:18 | 6:17 | 6:16 | 6:14 | 6:13 | 6:11 | 6:10 | 6:09 | 6:07 | 6:06 | 6:04 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.9 | 4:49 | 6:41 |
| 2 | 13.8 | 4:50 | 6:40 |
| 3 | 13.8 | 4:51 | 6:39 |
| 4 | 13.8 | 4:52 | 6:38 |
| 5 | 13.7 | 4:52 | 6:37 |
| 6 | 13.7 | 4:53 | 6:36 |
| 7 | 13.7 | 4:54 | 6:35 |
| 8 | 13.6 | 4:55 | 6:34 |
| 9 | 13.6 | 4:56 | 6:33 |
| 10 | 13.6 | 4:57 | 6:32 |
| 11 | 13.6 | 4:57 | 6:31 |
| 12 | 13.5 | 4:58 | 6:29 |
| 13 | 13.5 | 4:59 | 6:28 |
| 14 | 13.5 | 5:00 | 6:27 |
| 15 | 13.4 | 5:01 | 6:26 |
| 16 | 13.4 | 5:01 | 6:25 |
| 17 | 13.4 | 5:02 | 6:23 |
| 18 | 13.3 | 5:03 | 6:22 |
| 19 | 13.3 | 5:04 | 6:21 |
| 20 | 13.2 | 5:05 | 6:20 |
| 21 | 13.2 | 5:06 | 6:18 |
| 22 | 13.2 | 5:06 | 6:17 |
| 23 | 13.1 | 5:07 | 6:16 |
| 24 | 13.1 | 5:08 | 6:14 |
| 25 | 13.1 | 5:09 | 6:13 |
| 26 | 13.0 | 5:10 | 6:11 |
| 27 | 13.0 | 5:10 | 6:10 |
| 28 | 13.0 | 5:11 | 6:09 |
| 29 | 12.9 | 5:12 | 6:07 |
| 30 | 12.9 | 5:13 | 6:06 |
| 31 | 12.8 | 5:14 | 6:04 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 4.79 kWh/m².
For context, solar energy here swings from a low near 2.37 kWh/m² to a high of 5.24 kWh/m² in May across the year — August's 4.79 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.3 | 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.1 | Bright |
| 2 | 5.1 | Bright |
| 3 | 5.1 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.0 | Bright |
| 7 | 5.0 | Bright |
| 8 | 5.0 | Bright |
| 9 | 5.0 | Bright |
| 10 | 5.0 | Bright |
| 11 | 4.9 | Bright |
| 12 | 4.9 | Bright |
| 13 | 4.9 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.7 | 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 | 4.5 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.3 | Bright |
| 31 | 4.3 | Bright |
Hazard calendar for Ishioka
In August, Ishioka sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Ishioka sits in the Pacific typhoon belt; the season peaks July–October.
Is August a good time to visit Ishioka?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a reasonable time to visit Ishioka for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Ishioka in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Ishioka sees daytime highs around 30°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.
Sea temperature near Ishioka in August
The nearest coast averages about 24°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 33 km away) is warmest in August at about 24°C and coldest in February near 13°C.
It's comfortable for a long swim from Jun 23 to Oct 28 — about 4.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 13 | 13 | 15 | 17 | 20 | 22 | 24 | 23 | 21 | 19 | 16 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 13 | Bracing |
| Mar | 13 | Bracing |
| Apr | 15 | Bracing |
| May | 17 | Cool |
| Jun | 20 | Cool |
| Jul | 22 | Refreshing |
| Aug | 24 | Warm |
| Sep | 23 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in Ishioka in August
Clear-sky midday UV in August 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 Ishioka peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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) | 2 | 4 | 4 | 6 | 8 | 9 | 10 | 10 | 8 | 6 | 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 | 4 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Ishioka in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Ishioka is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 14 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) | 15 | 18 | 25 | 25 | 24 | 19 | 16 | 15 | 15 | 16 | 16 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 18 | Moderate |
| Mar | 25 | Moderate |
| Apr | 25 | Moderate |
| May | 24 | Moderate |
| Jun | 19 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 15 | Moderate |
| Oct | 16 | Moderate |
| Nov | 16 | Moderate |
| Dec | 14 | Moderate |
Where is Ishioka?
Ishioka sits at 36.2°N, 140.3°E, 4 m above sea level, in Japan. The nearest listed city is Suginami, 3.0 km away.
Topography around Ishioka
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ishioka.
Within 3 km, the terrain around Ishioka has only modest variations in elevation — a maximum elevation change of 43 m around an average of 18 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 863 m; within 80 km, large variations in elevation — a maximum elevation change of 1,031 m.
The land around Ishioka is covered by trees (33%), artificial surfaces (31%) and cropland (28%) within 3 km, trees (49%) and cropland (23%) within 16 km, and trees (32%), water (23%) and cropland (22%) 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 Ishioka (36.1833°, 140.2667°, 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).