Hitachi weather in October

In October, Hitachi sees average daytime highs of 19°C and overnight lows near 17°C, with 211 mm of rain across 13.2 wet days and about 11.1 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 32% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 30 min by month's end. Set against the rest of the year, October is Hitachi's 6th-clearest and 6th-windiest month. For the whole year in context, see Hitachi's year-round climate.

Daytime high
19°
5th warmest
Overnight low
17°
8th coldest
Rainfall
211 mm
13.2 wet days
Daylight
11 hours
5:51 AM – 4:54 PM
Cloud cover
60%
6th clearest
Wind
16 km/h
6th windiest
Solar energy
3.09 kWh/m²
Travel score
5.8
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 18°C by the end.

A typical October day in Hitachi reaches about 19°C in the afternoon and slips back to 17°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°C. Set against its neighbours, October runs about 4°C cooler than September and about 4°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12219
22119
32119
42119
52119
62118
72118
82118
92018
102018
112018
122017
132017
142017
152017
161917
171917
181917
191916
201916
211916
221916
231916
241815
251815
261815
271815
281815
291815
301815
311814

How October really feels in Hitachi

Once humidity and wind are folded in, October 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

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

Hitachi weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 738.21.29.81.5
Feb / 718.31.810.61.4
Mar10° / 12712.70.911.72.3
Apr14° / 10°125120.212.93.9
May18° / 15°14412.5013.95.3
Jun21° / 18°14814.3014.55.4
Jul24° / 22°16214.1014.26.0
Aug26° / 23°11111.4013.46.4
Sep24° / 21°17414.1012.26.0
Oct19° / 17°21113.2011.15.8
Nov15° / 12°10810.10104.7
Dec11° / 728.70.29.52.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34258
44159
54258
64357
74357
84357
94456
104357
114456
124456
134357
144456
154456
164456
174555
184753
194654
204654
214852
224852
234951
244951
255149
265149
275248
285347
295446
305545
315644

Chance of precipitation in October

Any precipitation

Hitachi gets around 211 mm of rain over 13.2 wet days in October, the wettest month. 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 47% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
147
247
346
446
546
646
746
846
946
1045
1145
1244
1344
1443
1542
1642
1741
1841
1941
2040
2140
2240
2340
2439
2539
2638
2737
2837
2936
3036
3135

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 44% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1172335213
2182336203
3202336192
4212436182
5222435172
6242435151
7262534141
8272633131
9292632121
10312730111
11332828101
1235292690
1338302480
1440312270
1542312070
1644311860
1746321750
1848321550
1950321440
2054311230
2155311130
2257311020
2358301020
246030910
256229810
266328810
276527710
286626710
296825610
307024600
317223500

Wind in October

Winds average 16 km/h in October.

Across October, daily wind ranges from about 15 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over October. Sunrise moves from 5:37 AM to 6:06 AM, and sunset from 5:15 PM to 4:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:375:15
211.65:385:14
311.65:395:12
411.55:405:11
511.55:415:09
611.45:425:08
711.45:435:06
811.45:445:05
911.35:455:04
1011.35:455:02
1111.25:465:01
1211.25:474:59
1311.25:484:58
1411.15:494:57
1511.15:504:55
1611.05:514:54
1711.05:524:53
1811.05:534:51
1910.95:544:50
2010.95:554:49
2110.95:564:47
2210.85:574:46
2310.85:584:45
2410.85:594:44
2510.76:004:43
2610.76:014:42
2710.66:024:40
2810.66:034:39
2910.66:044:38
3010.56:054:37
3110.56:064:36

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.09 kWh/m².

For context, solar energy here swings from a low near 2.34 kWh/m² to a high of 5.45 kWh/m² in May across the year — October's 3.09 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.4Moderate
43.3Moderate
53.3Moderate
63.3Moderate
73.2Moderate
83.2Moderate
93.2Moderate
103.2Moderate
113.2Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
233.0Moderate
243.0Moderate
253.0Moderate
263.0Moderate
273.0Moderate
282.9Moderate
292.9Moderate
302.9Moderate
312.9Moderate
Planning a trip in October

Hazard calendar for Hitachi

In seasonPeak

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

Hitachi 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 October a good time to visit Hitachi?

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

5.8
Sightseeing
4th-best month of the year
2.7
Beach & pool
5th-best month of the year

October is a reasonable time to visit Hitachi for sightseeing.

What to pack for Hitachi in October

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

In October, Hitachi sees daytime highs around 19°C and nights near 17°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Hitachi in October

The nearest coast averages about 21°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 km away) is warmest in August at about 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 28 to Oct 25 — about 3.9 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr14Bracing
May17Cool
Jun19Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Hitachi in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hitachi peaks around August 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateAug 12UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Hitachi in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Hitachi is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 2219 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar17Moderate
Apr19Moderate
May19Moderate
Jun14Moderate
Jul12Moderate
Aug11Good
Sep10Good
Oct10Good
Nov9Good
Dec7Good
Location & terrain

Where is Hitachi?

Hitachi sits at 36.6°N, 140.7°E, 51 m above sea level, in Japan. The nearest listed city is Hitachi-ota, 12 km away.

Topography around Hitachi

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

Within 3 km, the terrain around Hitachi has significant variations in elevation — a maximum elevation change of 375 m around an average of 103 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 653 m; within 80 km, large variations in elevation — a maximum elevation change of 1,074 m.

The land around Hitachi is covered by trees (45%) and artificial surfaces (34%) within 3 km, water (43%) and trees (40%) within 16 km, and trees (46%) and water (30%) within 80 km.

3 km
375 m
16 km
653 m
80 km
1,074 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Hitachi-ota 12 km · Takahagi 14 km · Tokai 16 km · Funaishikawa 17 km · Ōmiya 22 km · Inada 22 km · Hitachiomiya 22 km · Kitaibaraki 23 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 Hitachi (36.6°, 140.65°, elevation 51 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).