Chikuma weather in July

In July, Chikuma sees average daytime highs of 25°C and overnight lows near 18°C, with 338 mm of rain across 23.2 wet days and about 14.2 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 27°C by the end. The sky is clear or mostly clear about 11% of the time in July, and the air most often feels humid.

Daylight stretches from about 14 h 30 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is Chikuma's 11th-clearest and 11th-windiest month. For the whole year in context, see Chikuma's year-round climate.

Daytime high
25°
2nd warmest
Overnight low
18°
11th coldest
Rainfall
338 mm
23.2 wet days
Daylight
14 h 18 min
4:45 AM – 7:01 PM
Cloud cover
77%
11th clearest
Wind
5 km/h
11th windiest
Solar energy
4.89 kWh/m²
Travel score
4.6
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 27°C by the end.

A typical July day in Chikuma reaches about 25°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 29°C. Set against its neighbours, July runs about 4°C warmer than June and about 1°C cooler than August.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12416
22416
32417
42417
52417
62417
72417
82417
92517
102517
112518
122518
132518
142518
152518
162518
172618
182618
192618
202618
212618
222618
232618
242619
252719
262719
272719
282719
292719
302719
312719

How July really feels in Chikuma

Once humidity and wind are folded in, July averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

July sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Chikuma weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -7°15220.121.79.80.0
Feb / -6°12916.716.910.60.0
Mar / -3°18017.814.111.70.5
Apr13° / 15815.53.912.93.1
May19° / 19316.40.113.95.1
Jun22° / 14°28820.6014.44.7
Jul25° / 18°33823.2014.24.6
Aug27° / 18°22519.7013.45.1
Sep23° / 14°25619012.25.1
Oct17° / 22318.50.211.14.3
Nov10° / 14916.85.310.12.1
Dec / -4°15519.717.39.60.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 13% of July, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11585
21684
31684
41684
51783
61882
71882
81882
91981
102080
112080
122179
132278
142278
152377
162476
172476
182674
192674
202773
212872
222971
232971
243268
253268
263466
273466
283565
293664
303664
313664

Chance of precipitation in July

Any precipitation

Chikuma gets around 338 mm of rain over 23.2 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 74% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
180
280
380
480
580
680
780
880
980
1080
1180
1280
1379
1478
1578
1677
1776
1875
1974
2073
2172
2271
2370
2468
2567
2666
2765
2864
2964
3063
3163

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the humid band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 29% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1832519
26305410
35285611
45265712
54255813
63236014
72226016
82216017
92196118
101186219
111176121
121166122
131156024
141146025
151145827
161135828
170125830
180115831
190105832
20095734
21095536
22085537
23085339
24075241
25065143
26064945
27054847
28054649
29044551
30044452
31034354

Wind in July

Winds average 5 km/h in July.

Across July, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 30 min at the start of July to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:37 AM to 4:56 AM, and sunset from 7:05 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:377:05
214.54:377:05
314.54:387:05
414.44:387:05
514.44:397:05
614.44:397:04
714.44:407:04
814.44:407:04
914.44:417:04
1014.44:417:04
1114.44:427:03
1214.34:437:03
1314.34:437:03
1414.34:447:02
1514.34:457:02
1614.34:457:01
1714.24:467:01
1814.24:477:00
1914.24:477:00
2014.24:486:59
2114.24:496:59
2214.14:496:58
2314.14:506:57
2414.14:516:57
2514.14:526:56
2614.04:526:55
2714.04:536:54
2814.04:546:54
2914.04:556:53
3013.94:566:52
3113.94:566:51

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.89 kWh/m².

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 5.7 kWh/m² in May across the year — July's 4.89 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.8Bright
144.8Bright
154.8Bright
164.9Bright
174.9Bright
184.9Bright
195.0Bright
205.0Bright
215.0Bright
225.1Bright
235.1Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in July

Is July a good time to visit Chikuma?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.6
Sightseeing
5th-best month of the year
4.3
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Chikuma for sightseeing.

What to pack for Chikuma in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Chikuma sees daytime highs around 25°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 23 days see rain.

rain gearlight clothessun protection

Sea temperature near Chikuma in July

The nearest coast averages about 23°C in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 67 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 20 to Nov 1 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec15Cool

UV index in Chikuma in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks 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 Chikuma peaks around July 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 20UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Very high
Jul10Extreme
Aug10Extreme
Sep9Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Chikuma in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July falls, not just the annual average.

Air quality in Chikuma is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov11Good
Dec10Good
Location & terrain

Where is Chikuma?

Chikuma sits at 36.5°N, 138.1°E, 388 m above sea level, in Japan. The nearest listed city is Sakaki, 11 km away.

Topography around Chikuma

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chikuma.

Within 3 km, the terrain around Chikuma has large variations in elevation — a maximum elevation change of 635 m around an average of 539 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,102 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,130 m.

The land around Chikuma is covered by trees (54%) and artificial surfaces (22%) within 3 km, trees (78%) within 16 km, and trees (78%) within 80 km.

3 km
635 m
16 km
1,102 m
80 km
3,130 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Sakaki 11 km · Nagano 16 km · Ōmachi 20 km · Ueda 22 km · Suzaka 24 km · Hotaka 28 km · Kamimaruko 28 km · Toyoshina 30 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
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Chikuma (36.5271°, 138.0894°, elevation 388 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).