Kushiro in Summer
In summer (June, July and August), Kushiro sees average daytime highs around 17°C and overnight lows near 14°C, with 358 mm of rain over about 32 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 13°C in early June to 20°C by late August. The sky is clear or mostly clear about 12% of the time across summer, and the air most often feels dry.
Summer is Kushiro's best season of the year to visit on our travel score. For the whole year in context, see Kushiro's year-round climate.
- Avg daytime high
- 17°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 358 mm
- 32 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Kushiro in Summer
Over the season highs climb from about 13°C in early June to 20°C by late August.
A typical summer day in Kushiro reaches about 17°C and drops to 14°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Kushiro
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Kushiro 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 | -1° / -7° | 50 | 6.2 | 6 | 9.2 | 0.0 |
| Feb | -1° / -8° | 37 | 6.2 | 6.1 | 10.2 | 0.0 |
| Mar | 2° / -4° | 68 | 8.1 | 6.3 | 11.6 | 0.0 |
| Apr | 7° / 1° | 85 | 9.4 | 2.8 | 13.1 | 0.9 |
| May | 11° / 6° | 105 | 10.5 | 0.1 | 14.4 | 2.6 |
| Jun | 14° / 10° | 86 | 9.3 | 0 | 15.1 | 3.9 |
| Jul | 18° / 14° | 126 | 10.7 | 0 | 14.8 | 5.3 |
| Aug | 20° / 17° | 147 | 12.1 | 0 | 13.8 | 5.7 |
| Sep | 19° / 14° | 160 | 11.5 | 0 | 12.3 | 5.6 |
| Oct | 14° / 9° | 118 | 9.5 | 0.1 | 10.8 | 4.3 |
| Nov | 8° / 3° | 75 | 8.6 | 1.4 | 9.5 | 1.5 |
| Dec | 2° / -3° | 71 | 8.2 | 5.4 | 8.9 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 12% of the time across summer.
Chance of precipitation in Summer
Kushiro gets around 358 mm of rain over 32 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 54 min in early June to 13 h 06 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 4.4 kWh/m².
Hazard calendar for Kushiro
In summer, Kushiro overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Kushiro sits in the Pacific typhoon belt; the season peaks July–October.
Is summer a good time to visit Kushiro?
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 Kushiro for sightseeing.
What to pack for Kushiro in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Kushiro sees daytime highs around 17°C and nights near 14°C. Worth packing: a warm layer, rain gear and sun protection. About 32 days see rain.
Sea temperature near Kushiro in Summer
The nearest coast averages about 14°C across summer — 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 17°C and coldest in February near 1°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 3 | 1 | 1 | 3 | 6 | 10 | 14 | 17 | 17 | 14 | 10 | 6 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 3 | Bracing |
| Feb | 1 | Bracing |
| Mar | 1 | Bracing |
| Apr | 3 | Bracing |
| May | 6 | Bracing |
| Jun | 10 | Bracing |
| Jul | 14 | Bracing |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 14 | Bracing |
| Nov | 10 | Bracing |
| Dec | 6 | Bracing |
UV index in Kushiro in Summer
Clear-sky midday UV across summer averages 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 Kushiro peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 | 7 | 7 | 5 | 9 | 6 | 4 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | High | High | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | High |
| May | 7 | High |
| Jun | 7 | High |
| Jul | 5 | High |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Kushiro?
Kushiro sits at 43.0°N, 144.4°E, 6 m above sea level, in Japan. The nearest listed city is Nakashibetsu, 80 km away.
Topography around Kushiro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kushiro.
Within 3 km, the terrain around Kushiro has only modest variations in elevation — a maximum elevation change of 65 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 151 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,450 m.
The land around Kushiro is covered by water (57%) and artificial surfaces (35%) within 3 km, water (50%) and trees (24%) within 16 km, and trees (49%) and water (34%) 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 Kushiro (42.975°, 144.3747°, elevation 6 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.