Fukushima weather in August

In August, Fukushima sees average daytime highs of 27°C and overnight lows near 20°C, with 163 mm of rain across 16.5 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 26°C by the end. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Fukushima's 10th-clearest and 11th-windiest month. For the whole year in context, see Fukushima's year-round climate.

Daytime high
27°
1st warmest
Overnight low
20°
12th coldest
Rainfall
163 mm
16.5 wet days
Daylight
13 h 30 min
4:58 AM – 6:26 PM
Cloud cover
73%
10th clearest
Wind
6 km/h
11th windiest
Solar energy
4.34 kWh/m²
Travel score
5.4
out of 10

Fukushima is city in Fukushima prefecture, Japan.

Density
383/km²
people per km²
Founded
1907

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 26°C by the end.

A typical August day in Fukushima reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°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)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142721
152721
162721
172720
182720
192720
202720
212720
222720
232720
242720
252720
262620
272620
282620
292619
302619
312619

How August really feels in Fukushima

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

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Fukushima weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°641110.69.70.0
Feb / -3°519.58.210.50.0
Mar / -1°9012.26.611.71.2
Apr14° / 9911.91.612.93.9
May19° / 10°10611.90145.8
Jun22° / 15°13314.3014.65.7
Jul26° / 19°19318.5014.35.1
Aug27° / 20°16316.5013.55.4
Sep23° / 16°16914.3012.35.8
Oct18° / 10°14411.30115.4
Nov12° / 679.30.9103.1
Dec / -1°5511.17.19.40.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53070
62971
72872
82872
92872
102872
112872
122872
132872
142971
152971
162872
172872
182971
193070
203070
213070
223070
233070
243169
253070
263070
273070
283070
293070
303169
313169

Chance of precipitation in August

Any precipitation

Fukushima gets around 163 mm of rain over 16.5 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 53% and peaks near 54% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
152
252
352
452
552
652
752
853
953
1053
1153
1253
1353
1453
1554
1653
1753
1853
1953
2053
2153
2253
2353
2453
2553
2653
2753
2853
2953
3052
3152

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 76% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1041144401
2041143411
3041142421
4041241421
5041241431
6041240431
7041240431
8041340431
9041339431
10041339431
11041440421
12041440411
13141440411
14141541400
15141541390
16141541380
17151542370
18151642360
19161642350
20161741340
21161841330
22171941320
23172041310
24172241290
25172340280
26172540270
27182640250
28182739240
29182939230
30193039210
31193138200

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 14 hours at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 4:45 AM to 5:11 AM, and sunset from 6:43 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.04:456:43
213.94:466:42
313.94:476:41
413.94:486:40
513.84:496:39
613.84:496:38
713.84:506:37
813.74:516:36
913.74:526:35
1013.74:536:34
1113.64:546:33
1213.64:556:31
1313.64:566:30
1413.54:566:29
1513.54:576:28
1613.54:586:26
1713.44:596:25
1813.45:006:24
1913.45:016:22
2013.35:026:21
2113.35:036:20
2213.25:036:18
2313.25:046:17
2413.25:056:15
2513.15:066:14
2613.15:076:12
2713.15:086:11
2813.05:096:09
2913.05:106:08
3012.95:106:06
3112.95:116:05

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.34 kWh/m².

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 5.36 kWh/m² in May across the year — August's 4.34 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.6Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.1Bright
264.0Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in August

Hazard calendar for Fukushima

In seasonPeak

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

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

Fukushima's rainy season runs March–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 Fukushima?

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

5.4
Sightseeing
4th-best month of the year
5.5
Beach & pool
1st-best month of the year

August is a reasonable time to visit Fukushima for sightseeing.

What to pack for Fukushima in August

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

In August, Fukushima sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. About 17 days see rain.

light clothesrain gear

Sea temperature near Fukushima in August

The nearest coast averages about 24°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 59 km away) is warmest in August at about 24°C and coldest in March near 9°C.

It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb9Bracing
Mar9Bracing
Apr11Bracing
May14Bracing
Jun18Cool
Jul21Refreshing
Aug24Refreshing
Sep23Refreshing
Oct19Cool
Nov17Cool
Dec14Bracing

UV index in Fukushima 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 Fukushima peaks around August 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 11UV 9Jan 10UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Fukushima 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 Fukushima is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun16Moderate
Jul14Moderate
Aug12Good
Sep11Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Fukushima?

Fukushima sits at 37.8°N, 140.5°E, 77 m above sea level, in Japan. The nearest listed city is Date, 8.0 km away.

Topography around Fukushima

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

Within 3 km, the terrain around Fukushima has only modest variations in elevation — a maximum elevation change of 231 m around an average of 94 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,180 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Fukushima is covered by artificial surfaces (61%) and trees (29%) within 3 km, trees (73%) within 16 km, and trees (69%) within 80 km.

3 km
231 m
16 km
1,180 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Date 8.0 km · Hobaramachi 10 km · Yanagawamachi-saiwaichō 16 km · Nihommatsu 19 km · Motomiya 27 km · Shiroishi 31 km · Funehikimachi-funehiki 35 km · Miharu 35 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 Fukushima (37.75°, 140.4667°, elevation 77 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).