Susaki weather in August

In August, Susaki sees average daytime highs of 29°C and overnight lows near 23°C, with 325 mm of rain across 22.4 wet days and about 13.2 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 22% 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 Susaki's 9th-clearest and 10th-windiest month. For the whole year in context, see Susaki's year-round climate.

Daytime high
29°
1st warmest
Overnight low
23°
12th coldest
Rainfall
325 mm
22.4 wet days
Daylight
13 h 12 min
5:33 AM – 6:48 PM
Cloud cover
67%
9th clearest
Wind
6 km/h
10th windiest
Solar energy
5.2 kWh/m²
Travel score
3.8
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical August day in Susaki reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°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 on par with July and about 3°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
182923
192923
202923
212923
222923
232923
242923
252922
262922
272922
282922
292922
302922
312822

How August really feels in Susaki

Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Susaki 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 / 696.41.3101.9
Feb10° / 968.51.510.82.3
Mar14° / 159120.411.73.8
Apr18° / 20111.70.112.85.6
May22° / 14°24213.4013.76.1
Jun25° / 18°37219.7014.24.9
Jul29° / 22°38422.40144.0
Aug29° / 23°32522.4013.23.8
Sep27° / 20°34218.3012.25.2
Oct22° / 14°23011.4011.26.6
Nov17° / 1148.4010.35.5
Dec11° / 876.60.59.83.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
24060
33961
43961
53961
63961
74060
83961
93961
103961
113862
123862
133862
143862
153862
163862
173862
184060
194060
204159
214159
224060
234060
244060
254060
264060
273961
283961
293961
303862
313862

Chance of precipitation in August

Any precipitation

Susaki gets around 325 mm of rain over 22.4 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 72% and peaks near 76% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
169
269
369
469
569
669
769
869
970
1070
1170
1271
1371
1472
1573
1673
1774
1874
1974
2075
2175
2275
2376
2476
2576
2676
2776
2875
2975
3074
3174

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 77% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10012835
20011845
30011836
40011836
50011836
60011836
70011836
80011836
90011836
100012817
110012817
120112807
130112807
140112807
150113806
160113806
170114796
180215776
190216775
201216765
211317754
221318744
231319734
241419733
251420723
261521703
271523683
281624672
291625662
301727632
311728622

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 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
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 5:23 AM to 5:44 AM, and sunset from 7:03 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:237:03
213.65:237:02
313.65:247:01
413.65:257:00
513.65:267:00
613.55:266:59
713.55:276:58
813.55:286:57
913.55:286:56
1013.45:296:55
1113.45:306:54
1213.45:316:53
1313.35:316:52
1413.35:326:51
1513.35:336:49
1613.25:336:48
1713.25:346:47
1813.25:356:46
1913.25:366:45
2013.15:366:44
2113.15:376:43
2213.15:386:41
2313.05:386:40
2413.05:396:39
2513.05:406:38
2612.95:416:36
2712.95:416:35
2812.95:426:34
2912.85:436:32
3012.85:436:31
3112.85:446:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.2 kWh/m².

For context, solar energy here swings from a low near 2.55 kWh/m² to a high of 5.53 kWh/m² in May across the year — August's 5.2 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in August

Hazard calendar for Susaki

In seasonPeak

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

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

Susaki'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 Susaki?

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

3.8
Sightseeing
8th-best month of the year
5.0
Beach & pool
2nd-best month of the year

August is a weaker month for outdoor sightseeing in Susaki.

What to pack for Susaki in August

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

In August, Susaki sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Susaki in August

The nearest coast averages about 28°C in August — 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 28°C and coldest in February near 17°C.

It's comfortable for a long swim from May 8 to Dec 15 — about 7.3 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan18Cool
Feb17Cool
Mar17Cool
Apr18Cool
May21Refreshing
Jun23Refreshing
Jul26Warm
Aug28Warm
Sep27Warm
Oct25Warm
Nov23Refreshing
Dec20Cool

UV index in Susaki in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Susaki peaks around July 11 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJul 11UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May9Very high
Jun10Extreme
Jul11Extreme
Aug10Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Susaki 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 Susaki is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1321 µg/m³Oct 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr22Moderate
May19Moderate
Jun16Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Susaki?

Susaki sits at 33.4°N, 133.3°E, 6 m above sea level, in Japan. The nearest listed city is Tosa, 19 km away.

Topography around Susaki

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

Within 3 km, the terrain around Susaki has significant variations in elevation — a maximum elevation change of 327 m around an average of 50 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,002 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,894 m.

The land around Susaki is covered by trees (52%) and water (23%) within 3 km, trees (60%) and water (34%) within 16 km, and trees (61%) and water (34%) within 80 km.

3 km
327 m
16 km
1,002 m
80 km
1,894 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Tosa 19 km · Ino 22 km · Kochi 28 km · Shinagawa 38 km · Nankoku 38 km · Yamashita 43 km · Tosayamadachō-nakano 43 km · Nakamura 57 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 Susaki (33.3947°, 133.2913°, 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).