Tōon weather in August

In August, Tōon sees average daytime highs of 30°C and overnight lows near 23°C, with 195 mm of rain across 17.2 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 23% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 42 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Tōon's 8th-clearest and 11th-windiest month. For the whole year in context, see Tōon's year-round climate.

Daytime high
30°
1st warmest
Overnight low
23°
12th coldest
Rainfall
195 mm
17.2 wet days
Daylight
13 h 18 min
5:35 AM – 6:51 PM
Cloud cover
64%
8th clearest
Wind
6 km/h
11th windiest
Solar energy
5.25 kWh/m²
Travel score
4.2
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical August day in Tōon reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°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, August runs about 1°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213022
223022
232922
242922
252922
262922
272922
282922
292922
302922
312921

How August really feels in Tōon

Once humidity and wind are folded in, August averages 21 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
21
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Tōon weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°7111.25.6100.8
Feb / 8510.84.310.71.3
Mar12° / 12913.61.711.73.0
Apr18° / 14611.60.112.85.4
May22° / 13°17411.9013.76.3
Jun25° / 18°29717.1014.25.4
Jul29° / 22°27918.80144.4
Aug30° / 23°19517.2013.34.2
Sep26° / 19°23215012.25.7
Oct21° / 13°16810.5011.16.5
Nov15° / 929.6010.24.8
Dec10° / 8411.139.82.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 19% of August, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24357
34258
44258
54258
64357
74357
84357
94357
104258
114159
124258
134258
144258
154258
164159
174258
184357
194357
204357
214456
224456
234456
244258
254258
264258
274258
284159
294159
304159
314159

Chance of precipitation in August

Any precipitation

Tōon gets around 195 mm of rain over 17.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 57% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
157
257
357
457
557
656
756
856
956
1056
1156
1256
1356
1456
1556
1655
1755
1855
1955
2055
2155
2255
2355
2455
2556
2656
2756
2856
2956
3057
3157

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 60% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10132661
20131671
30131671
40130681
50130681
60130690
70130690
80130690
90130690
100130690
110131680
120231670
130231661
140232651
151332631
161333621
171333621
181434601
191534591
201535581
211636561
221736560
232737540
242838520
252939500
262939490
2721040470
2821141450
2931242440
3031342420
3131443400

Wind in August

Winds average 6 km/h in August.

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

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
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 August

DaylightNight

Daylight runs from about 13 h 42 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over August. Sunrise moves from 5:24 AM to 5:45 AM, and sunset from 7:05 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:247:05
213.75:247:05
313.65:257:04
413.65:267:03
513.65:267:02
613.65:277:01
713.55:287:00
813.55:296:59
913.55:296:58
1013.45:306:57
1113.45:316:56
1213.45:326:55
1313.45:326:54
1413.35:336:53
1513.35:346:52
1613.35:356:51
1713.25:356:49
1813.25:366:48
1913.25:376:47
2013.15:376:46
2113.15:386:45
2213.15:396:43
2313.05:406:42
2413.05:406:41
2513.05:416:40
2612.95:426:38
2712.95:426:37
2812.95:436:36
2912.85:446:34
3012.85:456:33
3112.85:456:32

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.25 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.59 kWh/m² in May across the year — August's 5.25 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.9Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Tōon

In seasonPeak

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

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

Tōon's rainy season runs April–October, 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 August a good time to visit Tōon?

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

4.2
Sightseeing
8th-best month of the year
5.7
Beach & pool
1st-best month of the year

August is a reasonable time to visit Tōon for sightseeing.

What to pack for Tōon in August

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

In August, Tōon sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Tōon in August

The nearest coast averages about 26°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 26 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 12 to Nov 17 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Tōon in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Tōon peaks around June 23 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 highExtremeVery highModerateJun 23UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Tōon in August

GoodModeratePoorUnhealthyVery unhealthy

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

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

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1523 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun19Moderate
Jul15Moderate
Aug15Moderate
Sep12Moderate
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Tōon?

Tōon sits at 33.8°N, 132.9°E, 121 m above sea level, in Japan. The nearest listed city is Haramachi, 10 km away.

Topography around Tōon

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

Within 3 km, the terrain around Tōon has significant variations in elevation — a maximum elevation change of 548 m around an average of 185 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,435 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,895 m.

The land around Tōon is covered by trees (48%), artificial surfaces (26%) and cropland (20%) within 3 km, trees (81%) within 16 km, and trees (53%) and water (40%) within 80 km.

3 km
548 m
16 km
1,435 m
80 km
1,895 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Haramachi 10 km · Matsuyama 13 km · Masaki-chō 17 km · Iyo 18 km · Shinagawa 21 km · Hōjō 23 km · Saijō 30 km · Imabari 32 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 Tōon (33.7943°, 132.8901°, elevation 121 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).