Takamatsu weather in September

In September, Takamatsu sees average daytime highs of 26°C and overnight lows near 21°C, with 184 mm of rain across 12.6 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 32% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Takamatsu's 9th-clearest and 8th-windiest month. For the whole year in context, see Takamatsu's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
21°
10th coldest
Rainfall
184 mm
12.6 wet days
Daylight
12 h 12 min
5:52 AM – 6:04 PM
Cloud cover
61%
9th clearest
Wind
9 km/h
8th windiest
Solar energy
4.12 kWh/m²
Travel score
6.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 24°C by the end.

A typical September day in Takamatsu reaches about 26°C in the afternoon and slips back to 21°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12924
22824
32823
42823
52823
62823
72823
82823
92723
102722
112722
122722
132722
142722
152622
162621
172621
182621
192621
202621
212521
222520
232520
242520
252520
262520
272420
282419
292419
302419

How September really feels in Takamatsu

Once humidity and wind are folded in, September 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

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

Takamatsu weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6210.11.8101.6
Feb / 669.71.710.71.9
Mar13° / 10411.70.311.73.3
Apr17° / 11°11310.8012.85.4
May21° / 15°13310.4013.86.5
Jun25° / 20°20213.7014.25.9
Jul28° / 24°18913.9014.15.2
Aug30° / 25°12111.2013.35.0
Sep26° / 21°18412.6012.26.1
Oct21° / 16°1479.8011.16.7
Nov16° / 10°718.6010.25.2
Dec11° / 6710.50.79.72.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25050
34852
44852
54852
64852
74852
84852
94753
104753
114753
124753
134753
144753
154753
164852
174753
184753
194753
204753
214753
224753
234753
244753
254852
264852
274852
284951
294951
304951

Chance of precipitation in September

Any precipitation

Takamatsu gets around 184 mm of rain over 12.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
243
343
444
544
644
744
844
944
1044
1143
1243
1342
1442
1541
1641
1740
1840
1940
2040
2140
2240
2339
2439
2539
2639
2739
2839
2939
3039

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1011027584
2011128564
3011229553
4021330523
5021430513
6121531483
7131631463
8131732442
9141832422
10151933402
11262132372
12272232352
13282332341
14392432311
154102531291
164112631271
175122730251
185142829231
196152829221
207162928200
218173027180
228193026160
239203125150
2410213124140
2511223123120
2611233223110
2712243222100
281325322180
291426322170
301527312070

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 5:41 AM to 6:02 AM, and sunset from 6:26 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:416:26
212.75:426:25
312.75:426:23
412.65:436:22
512.65:446:20
612.65:456:19
712.55:456:18
812.55:466:16
912.55:476:15
1012.45:476:13
1112.45:486:12
1212.45:496:10
1312.35:506:09
1412.35:506:07
1512.25:516:06
1612.25:526:04
1712.25:536:03
1812.15:536:02
1912.15:546:00
2012.15:555:59
2112.05:555:57
2212.05:565:56
2312.05:575:54
2411.95:585:53
2511.95:585:51
2611.85:595:50
2711.86:005:48
2811.86:015:47
2911.76:015:45
3011.76:025:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.12 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 5.56 kWh/m² in May across the year — September's 4.12 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.5Bright
74.4Bright
84.4Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.1Bright
194.0Bright
204.0Bright
214.0Moderate
224.0Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Takamatsu

In seasonPeak

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

Takamatsu 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 September a good time to visit Takamatsu?

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

6.1
Sightseeing
3rd-best month of the year
6.0
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Takamatsu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Takamatsu in September

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

In September, Takamatsu sees daytime highs around 26°C and nights near 21°C. Worth packing: light clothes and rain gear. About 13 days see rain.

light clothesrain gear

Sea temperature near Takamatsu in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 30 km away) is warmest in August at about 27°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 7 to Nov 13 — about 5.3 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct24Refreshing
Nov20Cool
Dec17Cool

UV index in Takamatsu in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Takamatsu peaks around June 22 at about 10 (very high) — 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 highModerateJun 22UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Takamatsu in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Takamatsu is worst in April — around 23 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1422 µg/m³Oct 1613 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar21Moderate
Apr23Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Takamatsu?

Takamatsu sits at 34.3°N, 134.1°E, 17 m above sea level, in Japan. The nearest listed city is Hiragi, 10 km away.

Topography around Takamatsu

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

Within 3 km, the terrain around Takamatsu has only modest variations in elevation — a maximum elevation change of 241 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 532 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,946 m.

The land around Takamatsu is covered by artificial surfaces (70%) within 3 km, water (36%), trees (32%) and artificial surfaces (20%) within 16 km, and trees (55%) and water (33%) within 80 km.

3 km
241 m
16 km
532 m
80 km
1,946 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hiragi 10 km · Shido 11 km · Naoshima 15 km · Takinomiya 15 km · Sakaidechō 20 km · Utazu 22 km · Tamano 23 km · Marugame 25 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 Takamatsu (34.3333°, 134.05°, elevation 17 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).