Sarubetsu in Summer
In summer (June, July and August), Sarubetsu sees average daytime highs around 22°C and overnight lows near 14°C, with 362 mm of rain over about 34 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs climb from about 18°C in early June to 23°C by late August. The sky is clear or mostly clear about 15% of the time across summer, and the air most often feels dry.
Summer is Sarubetsu's best season of the year to visit on our travel score. For the whole year in context, see Sarubetsu's year-round climate.
- Avg daytime high
- 22°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 362 mm
- 34 wet days
- Avg wind
- 6 km/h
- Travel score
- 6.1
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Sarubetsu in Summer
Over the season highs climb from about 18°C in early June to 23°C by late August.
A typical summer day in Sarubetsu reaches about 22°C and drops to 14°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Sarubetsu
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.
Sarubetsu 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 | -2° / -13° | 61 | 6.7 | 7.1 | 9.2 | 0.0 |
| Feb | -1° / -12° | 48 | 7.2 | 7.7 | 10.2 | 0.0 |
| Mar | 4° / -6° | 77 | 9.7 | 8.2 | 11.6 | 0.1 |
| Apr | 11° / 0° | 88 | 10.8 | 4.1 | 13.1 | 2.6 |
| May | 16° / 7° | 100 | 10.8 | 0.4 | 14.4 | 5.0 |
| Jun | 19° / 11° | 89 | 9.8 | 0 | 15.1 | 5.9 |
| Jul | 22° / 15° | 114 | 11.3 | 0 | 14.8 | 6.2 |
| Aug | 24° / 17° | 159 | 13.1 | 0 | 13.8 | 6.2 |
| Sep | 21° / 12° | 171 | 12.5 | 0 | 12.3 | 5.9 |
| Oct | 15° / 5° | 115 | 10.2 | 0.1 | 10.8 | 4.7 |
| Nov | 8° / -1° | 81 | 9.4 | 2.2 | 9.5 | 1.5 |
| Dec | 1° / -9° | 76 | 8 | 6.6 | 8.9 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 15% of the time across summer.
Chance of precipitation in Summer
Sarubetsu gets around 362 mm of rain over 34 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 6 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 4.3 kWh/m².
Hazard calendar for Sarubetsu
In summer, Sarubetsu overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Sarubetsu sits in the Pacific typhoon belt; the season peaks July–October.
Is summer a good time to visit Sarubetsu?
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 Sarubetsu for sightseeing.
What to pack for Sarubetsu in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Sarubetsu sees daytime highs around 22°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 34 days see rain.
Sea temperature near Sarubetsu 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 at the nearest coast (about 36 km away) is warmest in August at about 18°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 | 11 | 15 | 18 | 17 | 14 | 10 | 7 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | 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 | 11 | Bracing |
| Jul | 15 | Cool |
| Aug | 18 | Cool |
| Sep | 17 | Cool |
| Oct | 14 | Bracing |
| Nov | 10 | Bracing |
| Dec | 7 | Bracing |
UV index in Sarubetsu 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 Sarubetsu peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 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 | Moderate | Moderate | High | Very high | Very high | Moderate | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 3 | Moderate |
| Apr | 5 | High |
| May | 7 | Very high |
| Jun | 7 | Very high |
| Jul | 5 | Moderate |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Sarubetsu 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 Sarubetsu is worst in April — around 15 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 6 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) | 7 | 10 | 14 | 15 | 13 | 9 | 9 | 8 | 7 | 8 | 7 | 6 |
| Level | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 10 | Good |
| Mar | 14 | Moderate |
| Apr | 15 | Moderate |
| May | 13 | Moderate |
| Jun | 9 | Good |
| Jul | 9 | Good |
| Aug | 8 | Good |
| Sep | 7 | Good |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Sarubetsu?
Sarubetsu sits at 42.9°N, 143.3°E, 25 m above sea level, in Japan. The nearest listed city is Obihiro, 12 km away.
Topography around Sarubetsu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sarubetsu.
Within 3 km, the terrain around Sarubetsu has only modest variations in elevation — a maximum elevation change of 155 m around an average of 86 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 333 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,032 m.
The land around Sarubetsu is covered by cropland (52%) and trees (40%) within 3 km, trees (43%) and cropland (42%) within 16 km, and trees (65%) 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 Sarubetsu (42.8724°, 143.3376°, elevation 25 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.