Ikaruga weather in September

In September, Ikaruga sees average daytime highs of 26°C and overnight lows near 22°C, with 195 mm of rain across 12.3 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 24°C by the end. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels muggy.

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 Ikaruga's 7th-clearest and 8th-windiest month. For the whole year in context, see Ikaruga's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
22°
10th coldest
Rainfall
195 mm
12.3 wet days
Daylight
12 h 12 min
5:50 AM – 6:02 PM
Cloud cover
58%
7th clearest
Wind
15 km/h
8th windiest
Solar energy
4.43 kWh/m²
Travel score
6.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 27°C in the first days to 24°C by the end.

A typical September day in Ikaruga reaches about 26°C in the afternoon and slips back to 22°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, September runs about 2°C cooler than August and about 4°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62724
72724
82723
92723
102723
112623
122623
132623
142623
152622
162622
172622
182522
192522
202522
212521
222521
232521
242521
252421
262421
272420
282420
292420
302420

How September really feels in Ikaruga

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.

Ikaruga weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 507.10.49.91.9
Feb / 637.70.610.72.0
Mar12° / 1129.9011.73.2
Apr16° / 11°13110.3012.94.9
May19° / 16°14610.2013.86.1
Jun23° / 20°18512.4014.36.0
Jul26° / 24°19312.8014.16.1
Aug28° / 25°11210.4013.36.1
Sep26° / 22°19512.3012.26.4
Oct21° / 17°1448.9011.16.8
Nov16° / 12°747010.25.5
Dec11° / 616.909.73.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25050
35050
45149
55149
65050
75050
85050
95050
105050
115050
125050
135050
145050
155149
165149
175050
185050
194951
205050
214951
225050
234951
245050
255050
265050
275050
285149
295149
305149

Chance of precipitation in September

Any precipitation

Ikaruga gets around 195 mm of rain over 12.3 wet days in September, the wettest month. 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 45% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
142
243
343
444
544
644
745
845
945
1044
1144
1243
1343
1442
1541
1640
1740
1839
1939
2038
2138
2237
2337
2437
2537
2637
2737
2837
2937
3037

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 28% of days. Sticky, muggy-or-worse air turns up on roughly 63% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1008244126
2019254124
30110264123
40111274021
50112283920
60213293818
70214303717
80315313615
91316323514
101417323412
111518333311
121619333110
13272033309
14282133298
15292233277
163102332266
173122432245
184132531234
194142631214
205162730203
215172829183
226182928172
236193027162
247203126152
258213125131
268223224121
279233223111
2810233323101
291124332291
301225332181

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze

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 5:38 AM to 6:00 AM, and sunset from 6:24 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:386:24
212.75:396:23
312.75:406:22
412.75:416:20
512.65:416:19
612.65:426:17
712.55:436:16
812.55:446:14
912.55:446:13
1012.45:456:11
1112.45:466:10
1212.45:476:08
1312.35:476:07
1412.35:486:05
1512.35:496:04
1612.25:506:02
1712.25:506:01
1812.15:515:59
1912.15:525:58
2012.15:535:56
2112.05:535:55
2212.05:545:54
2312.05:555:52
2411.95:565:51
2511.95:565:49
2611.85:575:48
2711.85:585:46
2811.85:595:45
2911.75:595:43
3011.76:005:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.43 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 5.75 kWh/m² in May across the year — September's 4.43 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.4Bright
194.3Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.1Bright
284.0Bright
294.0Bright
304.0Moderate
Planning a trip in September

Hazard calendar for Ikaruga

In seasonPeak

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

Ikaruga 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 Ikaruga?

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

6.4
Sightseeing
2nd-best month of the year
6.0
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Ikaruga for sightseeing.

What to pack for Ikaruga in September

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

In September, Ikaruga sees daytime highs around 26°C and nights near 22°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Ikaruga 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 24 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
Oct23Refreshing
Nov20Cool
Dec16Cool

UV index in Ikaruga 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 Ikaruga peaks around July 13 at about 10 (extreme) — 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highModerateJul 13UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Ikaruga 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 Ikaruga 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 Ikaruga?

Ikaruga sits at 34.8°N, 134.6°E, 17 m above sea level, in Japan. The nearest listed city is Tatsuno, 3.0 km away.

Topography around Ikaruga

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

Within 3 km, the terrain around Ikaruga has only modest variations in elevation — a maximum elevation change of 242 m around an average of 27 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 516 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,489 m.

The land around Ikaruga is covered by artificial surfaces (50%) and trees (24%) within 3 km, trees (46%), water (24%) and artificial surfaces (21%) within 16 km, and trees (58%) and water (27%) within 80 km.

3 km
242 m
16 km
516 m
80 km
1,489 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Tatsuno 3.0 km · Tatsunochō-tominaga 4.0 km · Aioi 11 km · Himeji 11 km · Shirahamachō-usazakiminami 14 km · Shisō 16 km · Yamazakichō-nakabirose 19 km · Kariya 20 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 Ikaruga (34.8347°, 134.578°, 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).