Numata in Summer
In summer (June, July and August), Numata sees average daytime highs around 23°C and overnight lows near 16°C, with 504 mm of rain over about 55 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 19°C in early June to 24°C by late August. The sky is clear or mostly clear about 12% of the time across summer, and the air most often feels muggy.
Summer is Numata's best season of the year to visit on our travel score. For the whole year in context, see Numata's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 16°C
- Rainfall
- 504 mm
- 55 wet days
- Avg wind
- 5 km/h
- Travel score
- 5.2
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Numata in Summer
Over the season highs climb from about 19°C in early June to 24°C by late August.
A typical summer day in Numata reaches about 23°C and drops to 16°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Numata
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.
Numata 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° / -6° | 110 | 20.6 | 21.8 | 9.8 | 0.0 |
| Feb | 2° / -6° | 94 | 17.4 | 18.4 | 10.6 | 0.0 |
| Mar | 5° / -3° | 123 | 17.9 | 14.8 | 11.7 | 0.3 |
| Apr | 12° / 3° | 116 | 14.9 | 4.2 | 12.9 | 2.7 |
| May | 17° / 8° | 129 | 14.9 | 0.3 | 13.9 | 4.9 |
| Jun | 21° / 13° | 155 | 17.1 | 0 | 14.5 | 5.0 |
| Jul | 24° / 18° | 205 | 20.4 | 0 | 14.2 | 5.0 |
| Aug | 25° / 18° | 145 | 17.1 | 0 | 13.4 | 5.6 |
| Sep | 21° / 15° | 176 | 15.8 | 0 | 12.2 | 5.4 |
| Oct | 16° / 8° | 153 | 13.7 | 0.3 | 11.1 | 4.4 |
| Nov | 10° / 2° | 85 | 13.4 | 4.8 | 10 | 2.0 |
| Dec | 4° / -3° | 96 | 18.2 | 16.6 | 9.5 | 0.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 12% of the time across summer.
Chance of precipitation in Summer
Numata gets around 504 mm of rain over 55 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 18 min in early June to 12 h 54 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 4.8 kWh/m².
Is summer a good time to visit Numata?
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 Numata for sightseeing.
What to pack for Numata in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Numata sees daytime highs around 23°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 55 days see rain.
UV index in Numata in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Numata peaks around July 24 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 | 5 | 7 | 9 | 9 | 10 | 10 | 9 | 6 | 3 | 2 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | High |
| Apr | 7 | Very high |
| May | 9 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Numata 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 Numata is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 10 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) | 11 | 14 | 19 | 21 | 20 | 18 | 15 | 13 | 12 | 12 | 11 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 14 | Moderate |
| Mar | 19 | Moderate |
| Apr | 21 | Moderate |
| May | 20 | Moderate |
| Jun | 18 | Moderate |
| Jul | 15 | Moderate |
| Aug | 13 | Moderate |
| Sep | 12 | Good |
| Oct | 12 | Good |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Numata?
Numata sits at 36.6°N, 139.1°E, 376 m above sea level, in Japan. The nearest listed city is Minakami, 8.0 km away.
Topography around Numata
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Numata.
Within 3 km, the terrain around Numata has significant variations in elevation — a maximum elevation change of 266 m around an average of 400 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,659 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,544 m.
The land around Numata is covered by artificial surfaces (35%), trees (32%) and cropland (28%) within 3 km, trees (78%) within 16 km, and trees (77%) 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 Numata (36.6333°, 139.05°, elevation 376 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.