Matsuyama weather in October

In October, Matsuyama sees average daytime highs of 22°C and overnight lows near 15°C, with 141 mm of rain across 9.4 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 19°C by the end. The sky is clear or mostly clear about 46% 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 42 min by month's end. Set against the rest of the year, October is Matsuyama's 1st-clearest and 6th-windiest month. For the whole year in context, see Matsuyama's year-round climate.

Daytime high
22°
6th warmest
Overnight low
15°
8th coldest
Rainfall
141 mm
9.4 wet days
Daylight
11 h 06 min
6:20 AM – 5:28 PM
Cloud cover
49%
1st clearest
Wind
9 km/h
6th windiest
Solar energy
3.74 kWh/m²
Travel score
6.9
out of 10

Matsuyama is city in Ehime prefecture, Japan.

Density
1,192/km²
people per km²
Founded
1889

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 24°C in the first days to 19°C by the end.

A typical October day in Matsuyama reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, October runs about 5°C cooler than September and about 6°C warmer than November.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12418
22418
32417
42417
52417
62317
72317
82316
92316
102316
112316
122216
132215
142215
152215
162215
172215
182114
192114
202114
212114
222114
232013
242013
252013
262013
272013
282012
291912
301912
311912

How October really feels in Matsuyama

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.

Matsuyama weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6911.33.3101.4
Feb / 7910.42.910.71.8
Mar13° / 11812.30.711.73.4
Apr18° / 10°133110.112.85.5
May22° / 15°15411.1013.76.4
Jun25° / 19°26815.7014.25.6
Jul29° / 23°23916.80144.7
Aug30° / 24°15615.8013.34.5
Sep27° / 20°18713.6012.25.9
Oct22° / 15°1419.4011.16.9
Nov16° / 839.1010.25.3
Dec11° / 8311.41.99.82.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 41%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45248
55347
65347
75446
85545
95743
105842
115842
125842
135941
146040
156139
166139
176139
186238
196238
206337
216337
226337
236238
246238
256238
266436
276436
286436
296436
306436
316436

Chance of precipitation in October

Any precipitation

Matsuyama gets around 141 mm of rain over 9.4 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 31% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
437
537
636
735
834
933
1032
1131
1231
1330
1429
1529
1628
1728
1828
1928
2028
2128
2228
2328
2428
2528
2628
2728
2828
2927
3027
3127

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 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1162631217
2172730206
3192730196
4202730185
5222829175
6242828164
7262827154
8292826143
9322825133
10342823122
11372822112
12402821101
1342282091
1444281991
1546271881
1648271771
1751271660
1853271550
1954271450
2057261340
2159261230
2260261130
2362251120
2463251020
2564241020
266723910
276822910
287021810
297120810
307120810
317319710

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
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
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 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 6:08 AM to 6:33 AM, and sunset from 5:48 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:085:48
211.66:095:47
311.66:095:45
411.66:105:44
511.56:115:42
611.56:125:41
711.56:125:40
811.46:135:38
911.46:145:37
1011.36:155:36
1111.36:165:34
1211.36:165:33
1311.26:175:32
1411.26:185:31
1511.26:195:29
1611.16:205:28
1711.16:215:27
1811.16:215:26
1911.06:225:25
2011.06:235:23
2111.06:245:22
2210.96:255:21
2310.96:265:20
2410.96:275:19
2510.86:275:18
2610.86:285:17
2710.86:295:16
2810.76:305:15
2910.76:315:14
3010.76:325:13
3110.76:335:12

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.74 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.57 kWh/m² in May across the year — October's 3.74 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
14.0Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.7Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.4Moderate
Planning a trip in October

Hazard calendar for Matsuyama

In seasonPeak

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

Matsuyama 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 Matsuyama?

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

6.9
Sightseeing
1st-best month of the year
4.5
Beach & pool
5th-best month of the year

October is a reasonable time to visit Matsuyama for sightseeing.

What to pack for Matsuyama in October

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

In October, Matsuyama sees daytime highs around 22°C and nights near 15°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Matsuyama in October

The nearest coast averages about 23°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 14 km away) is warmest in August at about 26°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 12 to Nov 17 — about 5.2 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun21Refreshing
Jul24Warm
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov20Refreshing
Dec17Cool

UV index in Matsuyama 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 Matsuyama peaks around July 11 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 11UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Matsuyama 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 Matsuyama is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1523 µg/m³Oct 1711 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May21Moderate
Jun19Moderate
Jul15Moderate
Aug15Moderate
Sep12Moderate
Oct11Good
Nov12Good
Dec11Good
Location & terrain

Where is Matsuyama?

Matsuyama sits at 33.8°N, 132.8°E, 28 m above sea level, in Japan. The nearest listed city is Masaki-chō, 8.0 km away.

Topography around Matsuyama

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

Within 3 km, the terrain around Matsuyama has only modest variations in elevation — a maximum elevation change of 209 m around an average of 36 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,205 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,895 m.

The land around Matsuyama is covered by artificial surfaces (81%) within 3 km, trees (46%) and water (30%) within 16 km, and trees (54%) and water (39%) within 80 km.

3 km
209 m
16 km
1,205 m
80 km
1,895 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Masaki-chō 8.0 km · Haramachi 8.0 km · Iyo 11 km · Tōon 13 km · Hōjō 15 km · Shinagawa 32 km · Imabari 34 km · Uchiko 34 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 Matsuyama (33.8392°, 132.7657°, elevation 28 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).