Hirakawa weather in October

In October, Hirakawa sees average daytime highs of 16°C and overnight lows near 8°C, with 129 mm of precipitation across 13.8 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 13°C by the end. The sky is clear or mostly clear about 22% 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 18 min by month's end. Set against the rest of the year, October is Hirakawa's 2nd-clearest and 8th-windiest month. For the whole year in context, see Hirakawa's year-round climate.

Daytime high
16°
6th warmest
Overnight low
7th coldest
Precipitation
129 mm
13.8 wet days
Daylight
10 h 54 min
5:56 AM – 4:50 PM
Cloud cover
64%
2nd clearest
Wind
9 km/h
8th windiest
Solar energy
2.95 kWh/m²
Travel score
4.5
out of 10

Hirakawa is city in Aomori Prefecture, Japan.

Density
89/km²
people per km²
Founded
2006

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 13°C by the end.

A typical October day in Hirakawa reaches about 16°C in the afternoon and slips back to 8°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 19°C. Set against its neighbours, October runs about 6°C cooler than September and about 7°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11911
21911
31910
41810
51810
61810
71810
8189
9179
10179
11179
12178
13178
14168
15168
16168
17167
18167
19157
20157
21156
22156
23156
24146
25146
26146
27145
28135
29135
30135
31135

How October really feels in Hirakawa

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.

Hirakawa weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-0° / -6°8216.921.69.40.0
Feb / -6°8015.517.910.40.0
Mar / -3°10116.813.811.70.2
Apr12° / 9813.73.4132.8
May18° / 10413.10.114.25.2
Jun22° / 14°10913.1014.85.8
Jul25° / 18°16316.4014.65.6
Aug26° / 19°17716.1013.65.6
Sep22° / 14°15414.2012.35.8
Oct16° / 12913.80.110.94.5
Nov / 11216.369.71.5
Dec / -4°1061818.29.20.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 22% of October, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23763
33862
43862
53961
63961
73961
84060
94159
104159
114357
124258
134357
144456
154555
164555
174555
184654
194753
204753
214753
224852
234753
244753
254753
264753
274753
284753
294753
304753
314654

Chance of precipitation in October

Any precipitationSnow

Hirakawa gets around 129 mm of rain and snow over 13.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 44% and peaks near 48% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1460
2460
3460
4460
5460
6460
7450
8450
9440
10440
11430
12430
13420
14421
15421
16421
17421
18421
19421
20421
21431
22431
23441
24451
25451
26461
27461
28472
29472
30482
31483

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1672481
2702370
3722260
4742150
5761950
6781840
7791740
8811630
9831430
10851320
11861220
12881020
1390910
1491810
1591810
1692710
1793610
1894510
1996400
2096400
2197300
2298200
2398200
2498200
2599100
2699100
2799100
2899100
2999100
3099100
3199100

Wind in October

Winds average 9 km/h in October.

Across October, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 5:39 AM to 6:13 AM, and sunset from 5:14 PM to 4:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:395:14
211.55:415:12
311.55:425:11
411.45:435:09
511.45:445:07
611.35:455:06
711.35:465:04
811.35:475:02
911.25:485:01
1011.25:494:59
1111.15:504:57
1211.15:514:56
1311.05:524:54
1411.05:534:53
1510.95:554:51
1610.95:564:50
1710.95:574:48
1810.85:584:47
1910.85:594:45
2010.76:004:44
2110.76:014:42
2210.66:034:41
2310.66:044:40
2410.66:054:38
2510.56:064:37
2610.56:074:36
2710.46:084:34
2810.46:104:33
2910.46:114:32
3010.36:124:31
3110.36:134:29

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.95 kWh/m².

For context, solar energy here swings from a low near 1.7 kWh/m² to a high of 5.42 kWh/m² in May across the year — October's 2.95 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.3Moderate
43.2Moderate
53.2Moderate
63.2Moderate
73.2Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.9Moderate
222.8Moderate
232.8Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.5Moderate
312.5Moderate
Planning a trip in October

Hazard calendar for Hirakawa

In seasonPeak

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

Hirakawa 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 Hirakawa?

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

4.5
Sightseeing
6th-best month of the year
0.9
Beach & pool
6th-best month of the year

October is a reasonable time to visit Hirakawa for sightseeing.

What to pack for Hirakawa in October

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

In October, Hirakawa sees daytime highs around 16°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 14 days see rain.

a warm layerrain gear

Sea temperature near Hirakawa in October

The nearest coast averages about 19°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 41 km away) is warmest in August at about 23°C and coldest in March near 8°C.

It's comfortable for a long swim from Jul 24 to Oct 7 — about 2.5 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb8Bracing
Mar8Bracing
Apr8Bracing
May11Bracing
Jun15Cool
Jul19Cool
Aug23Refreshing
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Hirakawa in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hirakawa peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 19UV 8Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar3Moderate
Apr6High
May8Very high
Jun8Very high
Jul5Moderate
Aug9Very high
Sep7High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Hirakawa 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 Hirakawa is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1620 µg/m³Dec 169 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar18Moderate
Apr20Moderate
May18Moderate
Jun13Moderate
Jul12Good
Aug10Good
Sep10Good
Oct10Good
Nov9Good
Dec8Good
Location & terrain

Where is Hirakawa?

Hirakawa sits at 40.6°N, 140.6°E, 46 m above sea level, in Japan. The nearest listed city is Kuroishi, 7.0 km away.

Topography around Hirakawa

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

Within 3 km, the terrain around Hirakawa has only modest variations in elevation — a maximum elevation change of 131 m around an average of 49 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 976 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,616 m.

The land around Hirakawa is covered by cropland (54%) and trees (23%) within 3 km, trees (65%) and cropland (21%) within 16 km, and trees (59%) and water (31%) within 80 km.

3 km
131 m
16 km
976 m
80 km
1,616 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Kuroishi 7.0 km · Hirosaki 8.0 km · Namioka 14 km · Goshogawara 27 km · Tsugaru 28 km · Aomori 29 km · Shimokizukuri 30 km · Ōdate 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 Hirakawa (40.5873°, 140.5711°, elevation 46 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).