Suibara weather in July

In July, Suibara sees average daytime highs of 28°C and overnight lows near 21°C, with 311 mm of rain across 19.8 wet days and about 14.4 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 29°C by the end. The sky is clear or mostly clear about 15% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 36 min at the start of July to 14 hours by month's end. Set against the rest of the year, July is Suibara's 9th-clearest and 11th-windiest month. For the whole year in context, see Suibara's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
21°
11th coldest
Rainfall
311 mm
19.8 wet days
Daylight
14 h 24 min
4:37 AM – 7:00 PM
Cloud cover
74%
9th clearest
Wind
6 km/h
11th windiest
Solar energy
4.81 kWh/m²
Travel score
4.7
out of 10

Suibara is dissolved municipality in Kitakanbara district, Niigata prefecture, Japan.

Founded
1889

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 29°C by the end.

A typical July day in Suibara reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 31°C. Set against its neighbours, July runs about 3°C warmer than June and about 2°C cooler than August.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12619
22619
32619
42619
52619
62620
72620
82620
92720
102720
112720
122720
132720
142721
152721
162721
172821
182821
192821
202821
212821
222821
232921
242922
252922
262922
272922
282922
292922
302922
313022

How July really feels in Suibara

Once humidity and wind are folded in, July averages 2 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
2
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Suibara 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 / -2°19926.122.69.70.0
Feb / -2°1442218.510.50.0
Mar / 15621.211.611.71.0
Apr15° / 12915.91.712.93.8
May21° / 11°14014.30145.7
Jun24° / 16°18215014.65.8
Jul28° / 21°31119.8014.44.7
Aug29° / 22°21517.8013.54.5
Sep25° / 17°17616.2012.35.6
Oct19° / 11°16916.70115.1
Nov12° / 16719.32102.6
Dec / 20524.614.69.40.4

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 72%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32278
42278
52278
62377
72377
82278
92278
102377
112377
122476
132575
142575
152674
162773
172872
182872
192971
203070
213169
223169
233268
243466
253466
263664
273664
283862
293862
303961
314060

Chance of precipitation in July

Any precipitation

Suibara gets around 311 mm of rain over 19.8 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 63% and peaks near 69% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
266
367
467
568
669
769
869
969
1069
1169
1269
1368
1467
1567
1666
1765
1864
1963
2062
2161
2260
2359
2458
2556
2656
2755
2854
2954
3053
3153

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1193542120
2183344140
3173146150
4163047170
5152848190
6042649210
7042449220
8032349240
9032150260
10032049280
11021849300
12021749320
13021648340
14021547360
15021446380
16021345400
17011244430
18011142450
19011141470
20011039490
2101938520
2201936540
2301835560
2401833580
2501732600
2601730620
2701728631
2801627651
2901625671
3001624672
3101623682

Wind in July

Winds average 6 km/h in July.

Across July, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 36 min at the start of July to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:29 AM to 4:49 AM, and sunset from 7:04 PM to 6:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:297:04
214.64:297:04
314.64:307:04
414.64:307:04
514.64:317:04
614.54:317:04
714.54:327:03
814.54:327:03
914.54:337:03
1014.54:337:03
1114.54:347:02
1214.54:357:02
1314.44:357:02
1414.44:367:01
1514.44:377:01
1614.44:377:00
1714.44:387:00
1814.34:396:59
1914.34:396:59
2014.34:406:58
2114.34:416:57
2214.24:426:57
2314.24:426:56
2414.24:436:55
2514.24:446:54
2614.14:456:54
2714.14:466:53
2814.14:466:52
2914.14:476:51
3014.04:486:50
3114.04:496:49

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.81 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 5.51 kWh/m² in May across the year — July's 4.81 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.8Bright
184.8Bright
194.8Bright
204.9Bright
214.9Bright
225.0Bright
235.0Bright
245.1Bright
255.1Bright
265.1Bright
275.2Bright
285.2Bright
295.2Bright
305.3Bright
315.3Bright
Planning a trip in July

Hazard calendar for Suibara

In seasonPeak

In July, Suibara sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Suibara sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Suibara?

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

4.7
Sightseeing
5th-best month of the year
5.1
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Suibara for sightseeing.

What to pack for Suibara in July

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

In July, Suibara sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Suibara 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 31 km away) is warmest in August at about 26°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 22 to Oct 30 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun19Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Cool

UV index in Suibara in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Suibara peaks around August 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 13UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Suibara 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 Suibara is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1711 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb15Moderate
Mar22Moderate
Apr23Moderate
May22Moderate
Jun18Moderate
Jul16Moderate
Aug14Moderate
Sep13Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Suibara?

Suibara sits at 37.8°N, 139.2°E, 6 m above sea level, in Japan. The nearest listed city is Agano, 1.0 km away.

Topography around Suibara

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

Within 3 km, the terrain around Suibara has only modest variations in elevation — a maximum elevation change of 17 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 970 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,078 m.

The land around Suibara is covered by cropland (74%) and artificial surfaces (20%) within 3 km, cropland (39%) and trees (33%) within 16 km, and trees (53%) and water (33%) within 80 km.

3 km
17 m
16 km
970 m
80 km
2,078 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Agano 1.0 km · Niitsu-honchō 11 km · Kameda-honchō 11 km · Gosen 14 km · Shibata 15 km · Muramatsu 18 km · Niigata 19 km · Shirone 20 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 Suibara (37.8461°, 139.2304°, 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).