Tainai weather in October

In October, Tainai sees average daytime highs of 18°C and overnight lows near 11°C, with 168 mm of rain across 16 wet days and about 11 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 16°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 24 min by month's end. Set against the rest of the year, October is Tainai's 2nd-clearest and 8th-windiest month. For the whole year in context, see Tainai's year-round climate.

Daytime high
18°
6th warmest
Overnight low
11°
7th coldest
Rainfall
168 mm
16 wet days
Daylight
11 hours
5:58 AM – 4:57 PM
Cloud cover
64%
2nd clearest
Wind
8 km/h
8th windiest
Solar energy
2.96 kWh/m²
Travel score
5.0
out of 10

Tainai is city in Niigata Prefecture, Japan.

Density
108/km²
people per km²
Founded
2005

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 21°C in the first days to 16°C by the end.

A typical October day in Tainai reaches about 18°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 22°C. Set against its neighbours, October runs about 6°C cooler than September and about 6°C warmer than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12114
22113
32113
42113
52113
62013
72012
82012
92012
102012
111912
121911
131911
141911
151911
161811
171810
181810
191810
201810
211710
22179
23179
24179
25179
26169
27168
28168
29168
30168
31158

How October really feels in Tainai

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.

Tainai weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°22126.324.29.70.0
Feb / -2°15822.119.910.50.0
Mar / -0°16521.113.411.70.8
Apr14° / 13416.12.6133.5
May20° / 11°14314.40145.6
Jun24° / 16°18614.8014.65.8
Jul27° / 20°31519.5014.44.8
Aug29° / 21°21517.2013.54.8
Sep25° / 17°16715012.35.7
Oct18° / 11°168160115.0
Nov12° / 18119.339.92.4
Dec / -0°22725.316.89.40.3

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 19% of October, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23763
33763
43763
53862
63961
73961
83961
94060
104159
114159
124258
134258
144258
154456
164456
174456
184456
194456
204456
214258
224258
234258
244159
254258
264258
274159
284159
294258
304159
314159

Chance of precipitation in October

Any precipitation

Tainai gets around 168 mm of rain over 16 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 51% and peaks near 56% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
152
252
352
452
552
652
752
851
951
1050
1150
1249
1348
1448
1548
1648
1748
1848
1948
2049
2150
2250
2351
2452
2553
2654
2754
2855
2956
3056
3156

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 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14036195
24236184
34436174
44635163
54834143
65133133
75432122
85631112
95929102
10622792
11642592
12682381
13712171
14731971
15761761
16791551
17811351
18831241
19851140
2088930
2189830
2290820
2391720
2492620
2593610
2694510
2794510
2894510
2995410
3096400
3197300

Wind in October

Winds average 8 km/h in October.

Across October, daily wind ranges from about 8 km/h on the calmest days to 8 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
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over October. Sunrise moves from 5:43 AM to 6:13 AM, and sunset from 5:20 PM to 4:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:435:20
211.65:445:18
311.55:455:17
411.55:465:15
511.45:475:13
611.45:485:12
711.45:495:10
811.35:505:09
911.35:515:07
1011.25:525:06
1111.25:535:04
1211.25:545:03
1311.15:555:02
1411.15:565:00
1511.05:574:59
1611.05:584:57
1711.05:594:56
1810.96:004:55
1910.96:014:53
2010.86:024:52
2110.86:034:51
2210.86:044:49
2310.76:054:48
2410.76:064:47
2510.66:074:46
2610.66:084:44
2710.66:094:43
2810.56:104:42
2910.56:114:41
3010.56:124:40
3110.46:134:39

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.96 kWh/m².

For context, solar energy here swings from a low near 1.68 kWh/m² to a high of 5.51 kWh/m² in May across the year — October's 2.96 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.3Moderate
33.3Moderate
43.3Moderate
53.3Moderate
63.2Moderate
73.2Moderate
83.2Moderate
93.2Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
182.9Moderate
192.9Moderate
202.9Moderate
212.8Moderate
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 Tainai

In seasonPeak

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

Tainai 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 Tainai?

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

5.0
Sightseeing
4th-best month of the year
1.9
Beach & pool
6th-best month of the year

October is a reasonable time to visit Tainai for sightseeing.

What to pack for Tainai in October

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

In October, Tainai sees daytime highs around 18°C and nights near 11°C. Pack rain gear. About 16 days see rain.

rain gear

Sea temperature near Tainai in October

The nearest coast averages about 22°C in October — 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 March near 9°C.

It's comfortable for a long swim from Jun 21 to Oct 29 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan12Bracing
Feb10Bracing
Mar9Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug26Warm
Sep25Warm
Oct22Refreshing
Nov18Cool
Dec15Bracing

UV index in Tainai in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tainai peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 12UV 10Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul9Very high
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Tainai 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 Tainai is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1421 µg/m³Dec 159 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May19Moderate
Jun15Moderate
Jul14Moderate
Aug12Good
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Tainai?

Tainai sits at 38.1°N, 139.4°E, 48 m above sea level, in Japan. The nearest listed city is Shibata, 14 km away.

Topography around Tainai

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

Within 3 km, the terrain around Tainai has significant variations in elevation — a maximum elevation change of 325 m around an average of 33 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 938 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,110 m.

The land around Tainai is covered by cropland (46%), trees (26%) and artificial surfaces (24%) within 3 km, trees (41%), water (28%) and cropland (20%) within 16 km, and trees (52%) and water (35%) within 80 km.

3 km
325 m
16 km
938 m
80 km
2,110 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Shibata 14 km · Murakami 20 km · Suibara 29 km · Agano 30 km · Kameda-honchō 34 km · Niigata 36 km · Niitsu-honchō 38 km · Gosen 42 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 Tainai (38.0646°, 139.4056°, elevation 48 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).