Yashiro in Summer
In summer (June, July and August), Yashiro sees average daytime highs around 29°C and overnight lows near 22°C, with 487 mm of rain over about 40 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 25°C in early June to 30°C by late August. The sky is clear or mostly clear about 19% of the time across summer, and the air most often feels oppressive.
Summer is Yashiro's 3rd-best season to visit on our travel score. For the whole year in context, see Yashiro's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 487 mm
- 40 wet days
- Avg wind
- 9 km/h
- Travel score
- 4.7
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Yashiro in Summer
Over the season highs climb from about 25°C in early June to 30°C by late August.
A typical summer day in Yashiro reaches about 29°C and drops to 22°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Yashiro
Once humidity and wind are folded in, summer brings about 51 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Yashiro weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 0° | 50 | 6.5 | 1.2 | 9.9 | 1.6 |
| Feb | 9° / 1° | 60 | 7.6 | 1.5 | 10.7 | 2.0 |
| Mar | 13° / 3° | 106 | 10.7 | 0.2 | 11.7 | 3.5 |
| Apr | 18° / 9° | 117 | 10.6 | 0 | 12.9 | 5.7 |
| May | 23° / 14° | 138 | 10.5 | 0 | 13.8 | 6.6 |
| Jun | 26° / 19° | 169 | 12.9 | 0 | 14.3 | 5.8 |
| Jul | 30° / 23° | 197 | 14.7 | 0 | 14.1 | 4.4 |
| Aug | 32° / 24° | 121 | 11.9 | 0 | 13.3 | 4.0 |
| Sep | 28° / 20° | 194 | 11.9 | 0 | 12.2 | 5.8 |
| Oct | 22° / 13° | 140 | 8.8 | 0 | 11.1 | 6.9 |
| Nov | 16° / 7° | 71 | 6.3 | 0 | 10.2 | 5.6 |
| Dec | 11° / 2° | 59 | 6.5 | 0.4 | 9.7 | 2.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 19% of the time across summer.
Chance of precipitation in Summer
Yashiro gets around 487 mm of rain over 40 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 12 min in early June to 12 h 48 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.2 kWh/m².
Hazard calendar for Yashiro
In summer, Yashiro overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Yashiro sits in the Pacific typhoon belt; the season peaks July–October.
Is summer a good time to visit Yashiro?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Yashiro for sightseeing.
What to pack for Yashiro in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Yashiro sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 40 days see rain.
Sea temperature near Yashiro in Summer
The nearest coast averages about 24°C across summer — 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 27°C and coldest in February near 13°C.
It's comfortable for a long swim from Jun 6 to Nov 13 — about 5.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 13 | 14 | 15 | 18 | 21 | 25 | 27 | 26 | 23 | 20 | 17 |
| Comfort | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Cool |
| May | 18 | Cool |
| Jun | 21 | Refreshing |
| Jul | 25 | Warm |
| Aug | 27 | Warm |
| Sep | 26 | Warm |
| Oct | 23 | Refreshing |
| Nov | 20 | Cool |
| Dec | 17 | Cool |
UV index in Yashiro in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Yashiro peaks around July 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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) | 3 | 4 | 5 | 7 | 8 | 10 | 10 | 9 | 9 | 6 | 4 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Yashiro in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Yashiro is worst in April — around 22 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) | 13 | 16 | 21 | 22 | 21 | 18 | 17 | 17 | 13 | 11 | 12 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 16 | Moderate |
| Mar | 21 | Moderate |
| Apr | 22 | Moderate |
| May | 21 | Moderate |
| Jun | 18 | Moderate |
| Jul | 17 | Moderate |
| Aug | 17 | Moderate |
| Sep | 13 | Moderate |
| Oct | 11 | Good |
| Nov | 12 | Moderate |
| Dec | 12 | Good |
Where is Yashiro?
Yashiro sits at 34.9°N, 135.0°E, 67 m above sea level, in Japan. The nearest listed city is Katō, 5.0 km away.
Topography around Yashiro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yashiro.
Within 3 km, the terrain around Yashiro has only modest variations in elevation — a maximum elevation change of 101 m around an average of 67 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 689 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,489 m.
The land around Yashiro is covered by cropland (40%), artificial surfaces (28%) and trees (21%) within 3 km, trees (60%) within 16 km, and trees (60%) and water (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 Yashiro (34.9167°, 134.9667°, elevation 67 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.