Irimbiliyam weather in September

In September, Irimbiliyam sees average daytime highs of 29°C and overnight lows near 24°C, with 253 mm of rain across 23.8 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 7% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Irimbiliyam's 9th-clearest and 4th-windiest month. For the whole year in context, see Irimbiliyam's year-round climate.

Daytime high
29°
9th warmest
Overnight low
24°
6th coldest
Rainfall
253 mm
23.8 wet days
Daylight
12 h 06 min
6:18 AM – 6:22 PM
Cloud cover
83%
9th clearest
Wind
9 km/h
4th windiest
Solar energy
4.64 kWh/m²
Travel score
3.3
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Irimbiliyam reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
213024
223024
233024
243025
253025
263025
273025
283025
293025
303024

How September really feels in Irimbiliyam

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Irimbiliyam weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 25°61.411.44.0
Feb34° / 25°11311.63.4
Mar34° / 26°4811.211.92.9
Apr33° / 26°15423.812.22.5
May31° / 26°28526.212.52.7
Jun29° / 25°53129.612.62.7
Jul29° / 24°52330.312.62.9
Aug29° / 24°38528.812.43.1
Sep29° / 24°25323.812.13.3
Oct30° / 24°27126.211.83.1
Nov31° / 24°13316.211.53.8
Dec32° / 24°294.811.44.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
21090
31090
41189
51288
61288
71288
81387
91486
101387
111387
121387
131387
141486
151486
161486
171486
181585
191585
201486
211585
221585
231585
241684
251684
261684
271783
281882
291882
301981

Chance of precipitation in September

Any precipitation

Irimbiliyam gets around 253 mm of rain over 23.8 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 80% and peaks near 83% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
183
283
383
482
582
682
782
882
982
1082
1182
1282
1382
1481
1581
1680
1780
1880
1979
2079
2179
2278
2378
2478
2578
2678
2778
2879
2979
3080

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
14357
24357
34258
44258
54159
64159
74060
83961
93961
103862
113763
123664
133664
143565
153466
163466
173367
183268
193169
203169
213070
223070
233070
243070
253070
263169
273169
283169
293268
303268

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 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 6:19 AM to 6:17 AM, and sunset from 6:32 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:196:32
212.26:196:31
312.26:196:30
412.26:196:30
512.26:196:29
612.26:196:28
712.26:196:28
812.16:196:27
912.16:196:26
1012.16:196:26
1112.16:186:25
1212.16:186:24
1312.16:186:24
1412.16:186:23
1512.16:186:22
1612.16:186:22
1712.06:186:21
1812.06:186:20
1912.06:186:20
2012.06:186:19
2112.06:186:18
2212.06:186:18
2312.06:186:17
2412.06:186:16
2512.06:186:16
2612.06:186:15
2711.96:186:14
2811.96:186:14
2911.96:186:13
3011.96:176:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.64 kWh/m².

For context, solar energy here swings from a low near 3.67 kWh/m² to a high of 6.27 kWh/m² in March across the year — September's 4.64 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Irimbiliyam

In seasonPeak

In September, Irimbiliyam sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Irimbiliyam sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Irimbiliyam's monsoon runs May–October, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Irimbiliyam?

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

3.3
Sightseeing
5th-best month of the year
4.4
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Irimbiliyam.

What to pack for Irimbiliyam in September

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

In September, Irimbiliyam sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Irimbiliyam in September

The nearest coast averages about 27°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 April at about 30°C and coldest in August near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul27Warm
Aug27Warm
Sep27Warm
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Irimbiliyam in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Irimbiliyam peaks around August 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 19UV 13Dec 22UV 8
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar11Extreme
Apr12Extreme
May10Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Irimbiliyam 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 Irimbiliyam is worst in December — around 63 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (August, 25 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyDec 1762 µg/m³Aug 1225 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb52Poor
Mar45Poor
Apr45Poor
May43Poor
Jun28Moderate
Jul25Moderate
Aug25Moderate
Sep26Moderate
Oct39Poor
Nov58Unhealthy
Dec63Unhealthy
Location & terrain

Where is Irimbiliyam?

Irimbiliyam sits at 10.9°N, 76.1°E, 20 m above sea level, in India. The nearest listed city is Thaikattussery, 48 km away.

MaduraiBengaluruJaffna

Topography around Irimbiliyam

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

Within 3 km, the terrain around Irimbiliyam has only modest variations in elevation — a maximum elevation change of 104 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 208 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,603 m.

The land around Irimbiliyam is covered by trees (71%) and cropland (20%) within 3 km, trees (83%) within 16 km, and trees (66%) and water (27%) within 80 km.

3 km
104 m
16 km
208 m
80 km
2,603 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Thaikattussery 48 km · Kochi 104 km · Munnar 137 km · Alappuzha 155 km · Mysore 170 km · Madurai 245 km · Bengaluru 286 km · Jaffna 448 km

India travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / D / M
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$2,702
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
2.8
per 100k, 2022
Road deaths
15.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 484
Religion
Hindu 80%Muslim 14%Christian 2%other and unspecified 2%

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 Irimbiliyam (10.8624°, 76.0922°, elevation 20 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).