Tennō in Fall
In fall (September, October and November), Tennō sees average daytime highs around 18°C and overnight lows near 13°C, with 461 mm of precipitation over about 46 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 26°C in early September to 9°C by late November. The sky is clear or mostly clear about 22% of the time across fall, and the air most often feels dry.
Fall is Tennō's 2nd-best season to visit on our travel score. For the whole year in context, see Tennō's year-round climate.
- Avg daytime high
- 18°C
- 2nd-warmest season
- Avg overnight low
- 13°C
- Precipitation
- 461 mm
- 46 wet days
- Avg wind
- 14 km/h
- Travel score
- 4.6
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Tennō in Fall
Over the season highs ease from about 26°C in early September to 9°C by late November.
A typical fall day in Tennō reaches about 18°C and drops to 13°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Tennō
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Tennō 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 | 3° / -1° | 96 | 19.1 | 18.5 | 9.5 | 0.0 |
| Feb | 4° / -1° | 81 | 16.2 | 14.2 | 10.4 | 0.0 |
| Mar | 7° / 2° | 97 | 15.9 | 7.6 | 11.7 | 0.8 |
| Apr | 13° / 6° | 97 | 13.2 | 0.5 | 13 | 3.2 |
| May | 18° / 12° | 112 | 12.6 | 0 | 14.2 | 5.3 |
| Jun | 22° / 17° | 113 | 11.3 | 0 | 14.8 | 6.2 |
| Jul | 26° / 21° | 191 | 14.8 | 0 | 14.5 | 5.8 |
| Aug | 27° / 23° | 193 | 14.9 | 0 | 13.6 | 5.7 |
| Sep | 24° / 19° | 168 | 13.9 | 0 | 12.3 | 6.0 |
| Oct | 18° / 12° | 151 | 14.3 | 0 | 10.9 | 5.2 |
| Nov | 12° / 7° | 142 | 17.9 | 1.6 | 9.8 | 2.5 |
| Dec | 6° / 2° | 135 | 21.4 | 11.2 | 9.2 | 0.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 22% of the time across fall.
Chance of precipitation in Fall
Tennō gets around 461 mm of rain and snow over 46 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 14 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early September to 9 h 24 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 3.0 kWh/m².
Hazard calendar for Tennō
In fall, Tennō overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Tennō sits in the Pacific typhoon belt; the season peaks July–October.
Is fall a good time to visit Tennō?
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 Tennō for sightseeing.
What to pack for Tennō in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Tennō sees daytime highs around 18°C and nights near 13°C. Pack a warm layer and rain gear. Worth having: light clothes. About 46 days see rain.
Sea temperature near Tennō in Fall
The nearest coast averages about 21°C across fall — 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 25°C and coldest in March near 9°C.
It's comfortable for a long swim from Jun 30 to Oct 23 — about 3.8 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 11 | 9 | 9 | 10 | 14 | 18 | 22 | 25 | 24 | 21 | 17 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Warm | Refreshing | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 11 | Bracing |
| Feb | 9 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 14 | Bracing |
| Jun | 18 | Cool |
| Jul | 22 | Refreshing |
| Aug | 25 | Warm |
| Sep | 24 | Warm |
| Oct | 21 | Refreshing |
| Nov | 17 | Cool |
| Dec | 14 | Bracing |
UV index in Tennō in Fall
Clear-sky midday UV across fall averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tennō peaks around August 19 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 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 6 | 8 | 7 | 5 | 9 | 7 | 4 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Moderate | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 3 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 7 | Very high |
| Jul | 5 | Moderate |
| Aug | 9 | Very high |
| Sep | 7 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Tennō 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 Tennō is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 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) | 10 | 14 | 19 | 21 | 20 | 15 | 13 | 11 | 10 | 10 | 10 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 14 | Moderate |
| Mar | 19 | Moderate |
| Apr | 21 | Moderate |
| May | 20 | Moderate |
| Jun | 15 | Moderate |
| Jul | 13 | Moderate |
| Aug | 11 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 9 | Good |
Where is Tennō?
Tennō sits at 39.9°N, 140.0°E, 6 m above sea level, in Japan. The nearest listed city is Katagami, 4.0 km away.
Topography around Tennō
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tennō.
Within 3 km, the terrain around Tennō has only modest variations in elevation — a maximum elevation change of 27 m around an average of 2 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 419 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,630 m.
The land around Tennō is covered by cropland (38%) and water (34%) within 3 km, water (38%), trees (29%) and cropland (26%) within 16 km, and trees (51%) and water (39%) 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 Tennō (39.9°, 139.9667°, 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.