Saijō weather in October

In October, Saijō sees average daytime highs of 21°C and overnight lows near 16°C, with 166 mm of rain across 11 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 18°C by the end. The sky is clear or mostly clear about 42% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 36 min by month's end. Set against the rest of the year, October is Saijō's 1st-clearest and 6th-windiest month. For the whole year in context, see Saijō's year-round climate.

Daytime high
21°
6th warmest
Overnight low
16°
8th coldest
Rainfall
166 mm
11 wet days
Daylight
11 h 06 min
6:18 AM – 5:26 PM
Cloud cover
51%
1st clearest
Wind
10 km/h
6th windiest
Solar energy
3.64 kWh/m²
Travel score
6.4
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 18°C by the end.

A typical October day in Saijō reaches about 21°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 23°C. Set against its neighbours, October runs about 5°C cooler than September and about 5°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12318
22318
32318
42318
52318
62318
72217
82217
92217
102217
112217
122216
132116
142116
152116
162116
172115
182015
192015
202015
212015
222014
232014
241914
251914
261914
271914
281913
291813
301813
311813

How October really feels in Saijō

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.

Saijō 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 / 7813.53.4101.1
Feb / 8412.13.210.71.5
Mar12° / 12213.4111.72.9
Apr17° / 10°13411.60.112.85.1
May21° / 15°15811.2013.76.3
Jun24° / 19°24915.1014.25.7
Jul28° / 23°22815.60145.1
Aug29° / 24°15113.8013.35.0
Sep26° / 21°21614.1012.26.0
Oct21° / 16°16611011.16.4
Nov15° / 10°909.9010.24.8
Dec10° / 9012.81.69.82.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
35149
45149
55248
65347
75446
85545
95644
105743
115743
125842
135941
145941
156040
166139
176139
186139
196139
206238
216238
226238
236139
246139
256238
266238
276238
286238
296337
306337
316238

Chance of precipitation in October

Any precipitation

Saijō gets around 166 mm of rain over 11 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 35% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
242
342
442
541
641
740
839
938
1038
1137
1236
1335
1434
1534
1633
1733
1833
1933
2032
2133
2233
2333
2433
2532
2632
2732
2832
2932
3032
3131

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 46% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162534196
2172633185
3182633175
4202733164
5222732164
6242731153
7262730143
8292728132
9312827122
10342825122
11362823111
12392822101
1341282191
1443291981
1546291870
1648291770
1751281560
1853281450
1954281350
2056281240
2159271130
2260271030
2361271020
246326920
256426910
266625810
276724810
286823810
297022710
307221700
317320700

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 36 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 6:06 AM to 6:31 AM, and sunset from 5:46 PM to 5:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:065:46
211.66:075:45
311.66:085:43
411.66:095:42
511.56:095:41
611.56:105:39
711.56:115:38
811.46:125:37
911.46:125:35
1011.36:135:34
1111.36:145:33
1211.36:155:31
1311.26:165:30
1411.26:165:29
1511.26:175:28
1611.16:185:26
1711.16:195:25
1811.16:205:24
1911.06:215:23
2011.06:225:22
2111.06:225:21
2210.96:235:19
2310.96:245:18
2410.96:255:17
2510.86:265:16
2610.86:275:15
2710.86:285:14
2810.76:295:13
2910.76:305:12
3010.76:305:11
3110.66:315:10

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.64 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 5.61 kWh/m² in May across the year — October's 3.64 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.7Moderate
133.7Moderate
143.7Moderate
153.7Moderate
163.7Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
313.3Moderate
Planning a trip in October

Hazard calendar for Saijō

In seasonPeak

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

Saijō 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 Saijō?

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

6.4
Sightseeing
1st-best month of the year
3.8
Beach & pool
5th-best month of the year

October is a reasonable time to visit Saijō for sightseeing.

What to pack for Saijō in October

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

In October, Saijō sees daytime highs around 21°C and nights near 16°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Saijō in October

The nearest coast averages about 24°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 24 km away) is warmest in August at about 28°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 3 to Nov 14 — about 5.4 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul25Warm
Aug28Warm
Sep27Warm
Oct24Refreshing
Nov20Cool
Dec17Cool

UV index in Saijō 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 Saijō peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 12UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May9Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep10Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Saijō 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 Saijō is worst in April — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1321 µg/m³Oct 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb16Moderate
Mar20Moderate
Apr22Moderate
May19Moderate
Jun16Moderate
Jul13Moderate
Aug12Moderate
Sep11Good
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Saijō?

Saijō sits at 33.9°N, 133.2°E, 8 m above sea level, in Japan. The nearest listed city is Niihama, 12 km away.

Topography around Saijō

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

Within 3 km, the terrain around Saijō has significant variations in elevation — a maximum elevation change of 275 m around an average of 16 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,886 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,900 m.

The land around Saijō is covered by artificial surfaces (46%) and cropland (25%) within 3 km, trees (50%) and water (31%) within 16 km, and trees (58%) and water (34%) within 80 km.

3 km
275 m
16 km
1,886 m
80 km
1,900 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Niihama 12 km · Imabari 24 km · Tōon 30 km · Shikokuchūō 34 km · Shinagawa 35 km · Hōjō 38 km · Kawanoechō 38 km · Matsuyama 40 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 Saijō (33.9167°, 133.1833°, elevation 8 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).