Kamisu in Fall
In fall (September, October and November), Kamisu sees average daytime highs around 20°C and overnight lows near 18°C, with 527 mm of rain over about 39 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 26°C in early September to 14°C by late November. The sky is clear or mostly clear about 34% of the time across fall, and the air most often feels dry.
Fall is Kamisu's 2nd-best season to visit on our travel score. For the whole year in context, see Kamisu's year-round climate.
- Avg daytime high
- 20°C
- 2nd-warmest season
- Avg overnight low
- 18°C
- Rainfall
- 527 mm
- 39 wet days
- Avg wind
- 18 km/h
- Travel score
- 5.6
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Kamisu in Fall
Over the season highs ease from about 26°C in early September to 14°C by late November.
A typical fall day in Kamisu reaches about 20°C and drops to 18°C overnight. The warmest of the three months is September, the coolest November.
Kamisu weather by month
How the three fall months (September, October and November) 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 | 9° / 6° | 89 | 9.3 | 0.2 | 9.8 | 2.1 |
| Feb | 9° / 6° | 84 | 9.2 | 0.6 | 10.6 | 2.0 |
| Mar | 12° / 8° | 142 | 13 | 0.2 | 11.7 | 2.9 |
| Apr | 15° / 12° | 126 | 12.5 | 0 | 12.9 | 4.4 |
| May | 19° / 16° | 145 | 12.2 | 0 | 13.9 | 5.6 |
| Jun | 21° / 19° | 164 | 13.1 | 0 | 14.4 | 5.7 |
| Jul | 25° / 22° | 140 | 12 | 0 | 14.2 | 6.4 |
| Aug | 26° / 24° | 90 | 9.2 | 0 | 13.4 | 6.7 |
| Sep | 24° / 22° | 174 | 13.6 | 0 | 12.2 | 6.1 |
| Oct | 20° / 18° | 232 | 13.9 | 0 | 11.1 | 5.8 |
| Nov | 16° / 13° | 121 | 11.6 | 0 | 10.1 | 5.0 |
| Dec | 12° / 9° | 86 | 10.2 | 0 | 9.6 | 3.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 34% of the time across fall.
Chance of precipitation in Fall
Kamisu gets around 527 mm of rain over 39 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 18 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early September to 9 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.3 kWh/m².
Hazard calendar for Kamisu
In fall, Kamisu overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Kamisu sits in the Pacific typhoon belt; the season peaks July–October.
Is fall a good time to visit Kamisu?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Kamisu for sightseeing.
What to pack for Kamisu in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Kamisu sees daytime highs around 20°C and nights near 18°C. Pack rain gear. Worth having: light clothes and a warm layer. About 39 days see rain.
Sea temperature near Kamisu in Fall
The nearest coast averages about 22°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 19 km away) is warmest in August at about 25°C and coldest in February near 14°C.
It's comfortable for a long swim from Jun 14 to Nov 11 — about 5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 14 | 14 | 16 | 18 | 20 | 22 | 25 | 24 | 22 | 20 | 17 |
| Comfort | Cool | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 16 | Cool |
| May | 18 | Cool |
| Jun | 20 | Refreshing |
| Jul | 22 | Refreshing |
| Aug | 25 | Warm |
| Sep | 24 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 20 | Cool |
| Dec | 17 | Cool |
UV index in Kamisu in Fall
Clear-sky midday UV across fall averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kamisu peaks around August 13 at about 10 (extreme) — 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 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 | Extreme | 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 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Kamisu in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Kamisu is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 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) | 9 | 11 | 18 | 20 | 19 | 14 | 12 | 11 | 10 | 10 | 9 | 7 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 11 | Good |
| Mar | 18 | Moderate |
| Apr | 20 | Moderate |
| May | 19 | Moderate |
| Jun | 14 | Moderate |
| Jul | 12 | Good |
| Aug | 11 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Kamisu?
Kamisu sits at 35.9°N, 140.7°E, 7 m above sea level, in Japan. The nearest listed city is Omigawa, 7.0 km away.
Topography around Kamisu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kamisu.
Within 3 km, the terrain around Kamisu has only modest variations in elevation — a maximum elevation change of 24 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, large variations in elevation — a maximum elevation change of 840 m.
The land around Kamisu is covered by artificial surfaces (59%) within 3 km, water (39%) and cropland (22%) within 16 km, and water (41%) and trees (25%) 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 Kamisu (35.8969°, 140.6667°, elevation 7 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.