Shimoda weather in August

In August, Shimoda sees average daytime highs of 26°C and overnight lows near 24°C, with 146 mm of rain across 13 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 39% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Shimoda's 5th-clearest and 12th-windiest month. For the whole year in context, see Shimoda's year-round climate.

Daytime high
26°
1st warmest
Overnight low
24°
12th coldest
Rainfall
146 mm
13 wet days
Daylight
13 h 18 min
5:09 AM – 6:28 PM
Cloud cover
55%
5th clearest
Wind
18 km/h
12th windiest
Solar energy
5.53 kWh/m²
Travel score
6.2
out of 10

Shimoda is city in Shizuoka prefecture, Japan.

Founded
1971

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical August day in Shimoda reaches about 26°C in the afternoon and slips back to 24°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, August runs about 2°C warmer than July and about 2°C warmer than September.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12624
22624
32624
42624
52624
62624
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192624
202624
212624
222624
232624
242624
252624
262624
272624
282624
292624
302624
312624

Shimoda weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 1049.50.49.92.3
Feb10° / 1159.40.510.72.4
Mar12° / 19113.90.211.73.2
Apr16° / 13°18212.5012.84.6
May19° / 16°21012.3013.85.7
Jun22° / 20°28915014.35.5
Jul25° / 23°23613.8014.16.1
Aug26° / 24°14613013.36.2
Sep25° / 22°24015.3012.25.9
Oct21° / 18°26213.9011.16.0
Nov17° / 14°16311.6010.25.2
Dec12° / 10°9810.309.73.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 15% of August, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25248
35347
45248
55347
65347
75347
85446
95446
105446
115446
125446
135446
145446
155446
165545
175545
185545
195446
205446
215446
225446
235446
245446
255347
265347
275347
285248
295149
305149
315149

Chance of precipitation in August

Any precipitation

Shimoda gets around 146 mm of rain over 13 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 42% and peaks near 48% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
139
239
339
439
540
640
740
841
941
1041
1142
1242
1342
1442
1542
1642
1742
1842
1942
2042
2142
2242
2342
2442
2543
2644
2744
2845
2946
3047
3148

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1285238
2185239
3185140
4185041
5184942
6184942
7184843
8184843
9184743
10184743
11194743
12294742
13294742
142104741
152104741
162104840
172114839
182114838
192114937
203124936
213125035
223135034
233135232
243145231
253155230
263155428
273165427
283175426
293185524
303195523
314205521

Wind in August

Winds average 18 km/h in August, the calmest month.

Across August, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 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 60 minutes over August. Sunrise moves from 4:58 AM to 5:20 AM, and sunset from 6:43 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:586:43
213.74:586:42
313.74:596:41
413.75:006:40
513.65:016:39
613.65:016:38
713.65:026:37
813.65:036:36
913.55:046:35
1013.55:046:34
1113.55:056:33
1213.45:066:32
1313.45:076:31
1413.45:076:30
1513.35:086:29
1613.35:096:28
1713.35:106:26
1813.25:116:25
1913.25:116:24
2013.25:126:23
2113.15:136:22
2213.15:146:20
2313.15:146:19
2413.05:156:18
2513.05:166:16
2613.05:176:15
2712.95:176:14
2812.95:186:12
2912.95:196:11
3012.85:206:10
3112.85:206:08

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.53 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 5.58 kWh/m² in May across the year — August's 5.53 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
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.4Bright
215.4Bright
225.4Bright
235.3Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.0Bright
Planning a trip in August

Hazard calendar for Shimoda

In seasonPeak

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

Shimoda 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 Shimoda?

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

6.2
Sightseeing
1st-best month of the year
6.1
Beach & pool
1st-best month of the year

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

What to pack for Shimoda in August

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

In August, Shimoda sees daytime highs around 26°C and nights near 24°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Shimoda 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 offshore is warmest in August at about 26°C and coldest in February near 16°C.

It's comfortable for a long swim from May 24 to Dec 3 — about 6.4 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan17Cool
Feb16Cool
Mar16Cool
Apr18Cool
May20Cool
Jun22Refreshing
Jul24Warm
Aug26Warm
Sep26Warm
Oct24Refreshing
Nov21Refreshing
Dec19Cool

UV index in Shimoda 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 Shimoda peaks around July 24 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 highExtremeVery highModerateJul 24UV 10Dec 23UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun10Very high
Jul10Extreme
Aug10Extreme
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Shimoda 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 Shimoda is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1719 µg/m³Dec 168 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar18Moderate
Apr20Moderate
May18Moderate
Jun15Moderate
Jul11Good
Aug10Good
Sep9Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Shimoda?

Shimoda sits at 34.7°N, 138.9°E, 11 m above sea level, in Japan. The nearest listed city is Shuzenji, 33 km away.

Topography around Shimoda

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

Within 3 km, the terrain around Shimoda has significant variations in elevation — a maximum elevation change of 330 m around an average of 62 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,060 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,746 m.

The land around Shimoda is covered by trees (66%) and water (22%) within 3 km, water (53%) and trees (45%) within 16 km, and water (75%) and trees (20%) within 80 km.

3 km
330 m
16 km
1,060 m
80 km
3,746 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Shuzenji 33 km · Izu 33 km · Itō 35 km · Izunokuni 40 km · Atami 47 km · Kamizawa 47 km · Numazu 48 km · Fushimi 49 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 Shimoda (34.6765°, 138.9446°, elevation 11 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).