Nagasu weather in July

In July, Nagasu sees average daytime highs of 30°C and overnight lows near 24°C, with 330 mm of rain across 16.7 wet days and about 14 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 31°C by the end. The sky is clear or mostly clear about 22% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 06 min at the start of July to 13 h 42 min by month's end. Set against the rest of the year, July is Nagasu's 11th-clearest and 7th-windiest month. For the whole year in context, see Nagasu's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
24°
11th coldest
Rainfall
330 mm
16.7 wet days
Daylight
14 hours
5:25 AM – 7:23 PM
Cloud cover
71%
11th clearest
Wind
9 km/h
7th windiest
Solar energy
4.62 kWh/m²
Travel score
4.3
out of 10

Nagasu is town in Tamana district, Kumamoto prefecture, Japan.

Density
830/km²
people per km²
Founded
1957

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 28°C in the first days to 31°C by the end.

A typical July day in Nagasu reaches about 30°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, July runs about 3°C warmer than June and about 2°C cooler than August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12723
22723
32823
42823
52823
62823
72824
82824
92924
102924
112924
122924
132924
142924
153024
163024
173025
183025
193025
203025
213025
223025
233125
243125
253125
263125
273125
283125
293125
303125
313125

How July really feels in Nagasu

Once humidity and wind are folded in, July averages 23 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
23
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.

Nagasu weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan11° / 628.110.12.6
Feb12° / 828.810.83.0
Mar15° / 12811.711.74.4
Apr20° / 12°14510.912.86.0
May24° / 16°17211.113.76.6
Jun26° / 20°39316.714.15.3
Jul30° / 24°33016.7144.3
Aug31° / 25°15912.713.24.2
Sep28° / 22°16510.812.25.8
Oct24° / 16°1017.411.27.4
Nov18° / 11°907.810.36.1
Dec13° / 727.79.93.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 11% of July, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21981
31981
42080
52080
62179
72278
82476
92476
102674
112773
122872
132872
143070
153169
163268
173466
183565
193664
203862
213961
224159
234258
244456
254555
264753
274852
284852
294951
305149
315149

Chance of precipitation in July

Any precipitation

Nagasu gets around 330 mm of rain over 16.7 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 53% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
172
272
371
470
569
667
766
864
963
1061
1159
1258
1356
1454
1553
1651
1750
1849
1948
2047
2146
2245
2344
2443
2542
2641
2740
2839
2939
3038
3138

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 48% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
112245221
202225422
302205424
401195525
501175527
601165528
700155530
800145531
900135433
1000125434
1100115435
1200105337
1300105139
140095140
150094942
160084844
170074746
180074647
190074548
200064450
210064351
220054253
230054154
240044155
250044056
260034057
270034057
280024058
290024058
300024058
310024157

Wind in July

Winds average 9 km/h in July.

Across July, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 06 min at the start of July to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over July. Sunrise moves from 5:17 AM to 5:34 AM, and sunset from 7:26 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.15:177:26
214.15:187:26
314.15:187:26
414.15:187:26
514.15:197:26
614.15:197:26
714.15:207:26
814.15:207:25
914.15:217:25
1014.15:217:25
1114.15:227:25
1214.05:227:24
1314.05:237:24
1414.05:237:24
1514.05:247:24
1614.05:257:23
1714.05:257:23
1813.95:267:22
1913.95:267:22
2013.95:277:21
2113.95:287:21
2213.95:287:20
2313.85:297:20
2413.85:307:19
2513.85:307:19
2613.85:317:18
2713.85:327:17
2813.75:327:17
2913.75:337:16
3013.75:347:15
3113.75:347:14

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.62 kWh/m².

For context, solar energy here swings from a low near 2.22 kWh/m² to a high of 5.2 kWh/m² in May across the year — July's 4.62 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
64.0Bright
74.1Bright
84.1Bright
94.2Bright
104.3Bright
114.3Bright
124.4Bright
134.5Bright
144.5Bright
154.6Bright
164.7Bright
174.7Bright
184.8Bright
194.9Bright
204.9Bright
215.0Bright
225.0Bright
235.0Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in July

Hazard calendar for Nagasu

In seasonPeak

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

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

Nagasu's rainy season runs June–July, when most of the year's rain falls.

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

Is July a good time to visit Nagasu?

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

4.3
Sightseeing
8th-best month of the year
5.7
Beach & pool
4th-best month of the year

July is a reasonable time to visit Nagasu for sightseeing.

What to pack for Nagasu in July

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

In July, Nagasu sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Nagasu in July

The nearest coast averages about 25°C in July — 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 27°C and coldest in February near 14°C.

It's comfortable for a long swim from May 27 to Nov 14 — about 5.7 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb14Bracing
Mar14Bracing
Apr16Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Nagasu 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 Nagasu peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJul 13UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Nagasu 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 Nagasu is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (July, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2325 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun19Moderate
Jul13Moderate
Aug15Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Nagasu?

Nagasu sits at 32.9°N, 130.4°E, 8 m above sea level, in Japan. The nearest listed city is Arao, 5.0 km away.

Topography around Nagasu

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

Within 3 km, the terrain around Nagasu has only modest variations in elevation — a maximum elevation change of 46 m around an average of 4 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 501 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,765 m.

The land around Nagasu is covered by water (49%) and artificial surfaces (21%) within 3 km, water (57%) within 16 km, and trees (57%) and water (25%) within 80 km.

3 km
46 m
16 km
501 m
80 km
1,765 m
treesgrasslandcroplandartificial surfacesbare terrainwater
July weather nearby: Arao 5.0 km · Ōmuta 11 km · Tamana 12 km · Shimabara 18 km · Miyama 22 km · Uekimachi-mōno 23 km · Setakamachi-takayanagi 24 km · Yamaga 25 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 Nagasu (32.9326°, 130.4428°, elevation 8 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).