Saikū weather in August

In August, Saikū sees average daytime highs of 30°C and overnight lows near 25°C, with 144 mm of rain across 13.6 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 6th-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 32% 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 Saikū's 8th-clearest and 10th-windiest month. For the whole year in context, see Saikū's year-round climate.

Daytime high
30°
1st warmest
Overnight low
25°
12th coldest
Rainfall
144 mm
13.6 wet days
Daylight
13 h 18 min
5:18 AM – 6:37 PM
Cloud cover
59%
8th clearest
Wind
11 km/h
10th windiest
Solar energy
5.57 kWh/m²
Travel score
4.4
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 Saikū reaches about 30°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, August runs about 1°C warmer than July and about 3°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103126
113126
123126
133126
143126
153126
163126
173026
183025
193025
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
302925
312925

How August really feels in Saikū

Once humidity and wind are folded in, August averages 31 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
31
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.

Saikū weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan10° / 705.9102.5
Feb11° / 72710.72.8
Mar14° / 12610.411.74.1
Apr18° / 12°1371012.85.8
May22° / 16°16411.813.86.4
Jun25° / 20°2351514.35.6
Jul29° / 24°19114.514.14.7
Aug30° / 25°14413.613.34.4
Sep27° / 22°24715.312.25.4
Oct22° / 17°25412.311.16.5
Nov17° / 12°1108.210.25.9
Dec12° / 706.49.73.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% 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 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24753
34852
44951
54951
65050
75050
85050
95050
105050
115050
125050
134951
144951
154951
165050
174951
184951
194951
204951
214852
224852
234852
244852
254753
264753
274753
284555
294555
304456
314456

Chance of precipitation in August

Any precipitation

Saikū gets around 144 mm of rain over 13.6 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 44% and peaks near 51% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
140
239
339
439
539
639
739
840
940
1041
1141
1242
1342
1443
1543
1644
1744
1845
1945
2046
2147
2247
2348
2448
2549
2649
2750
2850
2951
3051
3151

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10174448
20174449
30174349
40174350
50174350
60174350
70174349
80174349
90174349
100184348
110184348
120184447
130184447
140184447
150184446
160294445
171294445
1812104444
1912104443
2012114442
2112124441
2213124440
2313134439
2413144438
2514144437
2614154436
2714164534
2814174533
2914184531
3014194530
3115204628

Wind in August

Winds average 11 km/h in August.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2912calm
3012calm
3112calm

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 5:07 AM to 5:30 AM, and sunset from 6:52 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:076:52
213.75:086:51
313.75:096:50
413.75:096:49
513.65:106:48
613.65:116:47
713.65:126:46
813.65:126:45
913.55:136:44
1013.55:146:43
1113.55:156:42
1213.45:156:41
1313.45:166:40
1413.45:176:39
1513.35:186:38
1613.35:186:37
1713.35:196:35
1813.25:206:34
1913.25:216:33
2013.25:216:32
2113.15:226:31
2213.15:236:29
2313.15:246:28
2413.05:246:27
2513.05:256:25
2613.05:266:24
2712.95:276:23
2812.95:276:21
2912.95:286:20
3012.85:296:19
3112.85:306:17

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.57 kWh/m².

For context, solar energy here swings from a low near 2.62 kWh/m² to a high of 5.67 kWh/m² in May across the year — August's 5.57 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.4Bright
225.4Bright
235.4Bright
245.3Bright
255.3Bright
265.3Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.0Bright
Planning a trip in August

Hazard calendar for Saikū

In seasonPeak

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

Saikū 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 August a good time to visit Saikū?

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

4.4
Sightseeing
8th-best month of the year
6.2
Beach & pool
1st-best month of the year

August is a reasonable time to visit Saikū for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Saikū in August

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

In August, Saikū sees daytime highs around 30°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Saikū in August

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

It's comfortable for a long swim from May 31 to Nov 11 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Cool
Dec17Cool

UV index in Saikū 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 Saikū peaks around July 13 at about 10 (very high) — 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 — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 13UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Saikū 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 Saikū is worst in March — around 26 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (July, 16 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2326 µg/m³Jul 2316 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb21Moderate
Mar26Moderate
Apr26Moderate
May24Moderate
Jun20Moderate
Jul16Moderate
Aug16Moderate
Sep17Moderate
Oct19Moderate
Nov21Moderate
Dec18Moderate
Location & terrain

Where is Saikū?

Saikū sits at 34.5°N, 136.6°E, 10 m above sea level, in Japan. The nearest listed city is Tamaru, 6.0 km away.

Topography around Saikū

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

Within 3 km, the terrain around Saikū has only modest variations in elevation — a maximum elevation change of 64 m around an average of 13 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 604 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,887 m.

The land around Saikū is covered by cropland (50%) and artificial surfaces (26%) within 3 km, trees (34%) and water (33%) within 16 km, and trees (42%) and water (38%) within 80 km.

3 km
64 m
16 km
604 m
80 km
1,887 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Tamaru 6.0 km · Ise 8.0 km · Matsusaka 10 km · Toba 20 km · Hisai-motomachi 21 km · Tsu 25 km · Shima 29 km · Kawage 31 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 Saikū (34.5333°, 136.6333°, elevation 10 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).