Alappuzha weather in September

In September, Alappuzha sees average daytime highs of 27°C and overnight lows near 25°C, with 231 mm of rain across 25.3 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels oppressive.

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 Alappuzha's 9th-clearest and 4th-windiest month. For the whole year in context, see Alappuzha's year-round climate.

Daytime high
27°
10th warmest
Overnight low
25°
3rd coldest
Rainfall
231 mm
25.3 wet days
Daylight
12 h 06 min
6:17 AM – 6:21 PM
Cloud cover
78%
9th clearest
Wind
15 km/h
4th windiest
Solar energy
4.88 kWh/m²
Travel score
4.0
out of 10

Alappuzha is city in Kerala, India.

Air quality
Elevated
PM10 56 µg/m³ · 2019
Density
5,219/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Alappuzha reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232725
242725
252725
262725
272725
282725
292725
302725

How September really feels in Alappuzha

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.

Alappuzha weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°267.711.57.1
Feb28° / 26°311011.76.3
Mar29° / 27°6816.911.95.0
Apr29° / 27°1532512.23.5
May29° / 27°29827.212.43.3
Jun27° / 26°44329.512.53.3
Jul27° / 25°38829.712.53.4
Aug26° / 25°29328.112.33.7
Sep27° / 25°23125.312.14.0
Oct27° / 25°26125.711.84.0
Nov28° / 26°19420.911.64.7
Dec28° / 26°6410.411.56.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11585
21684
31783
41783
51783
61882
71981
81981
92080
102080
112179
122179
132179
142377
152377
162377
172476
182476
192377
202377
212377
222377
232377
242476
252476
262476
272575
282674
292674
302575

Chance of precipitation in September

Any precipitation

Alappuzha gets around 231 mm of rain over 25.3 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 84% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
187
287
386
486
585
685
785
885
984
1084
1184
1284
1384
1484
1584
1684
1784
1884
1984
2084
2184
2284
2384
2484
2584
2684
2784
2883
2983
3083

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 83% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
18614
28614
38614
48614
58614
68614
78614
88614
98614
108614
118614
128614
138614
148614
158515
168416
178317
188317
198218
208119
218119
228020
238020
248020
257921
267921
277921
287921
297921
307921

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

05101520151015202530
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

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 6:16 AM, and sunset from 6:30 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:196:30
212.26:196:29
312.26:196:29
412.26:196:28
512.16:196:28
612.16:186:27
712.16:186:26
812.16:186:26
912.16:186:25
1012.16:186:24
1112.16:186:24
1212.16:186:23
1312.16:186:22
1412.16:186:22
1512.16:186:21
1612.16:176:21
1712.06:176:20
1812.06:176:19
1912.06:176:19
2012.06:176:18
2112.06:176:17
2212.06:176:17
2312.06:176:16
2412.06:176:15
2512.06:176:15
2612.06:176:14
2712.06:166:14
2811.96:166:13
2911.96:166:12
3011.96:166:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.88 kWh/m².

For context, solar energy here swings from a low near 4.12 kWh/m² to a high of 6.3 kWh/m² in March across the year — September's 4.88 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Alappuzha

In seasonPeak

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

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

Alappuzha's rainy season runs May–October, when most of the year's rain falls.

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

Is September a good time to visit Alappuzha?

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

4.0
Sightseeing
6th-best month of the year
4.1
Beach & pool
9th-best month of the year

September is a reasonable time to visit Alappuzha for sightseeing.

What to pack for Alappuzha in September

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

In September, Alappuzha sees daytime highs around 27°C and nights near 25°C. Pack rain gear. Worth having: light clothes and sun protection. About 25 days see rain.

rain gearlight clothessun protection

Sea temperature near Alappuzha 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 14 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
Jun28Tropical
Jul27Warm
Aug27Warm
Sep27Warm
Oct28Tropical
Nov29Tropical
Dec29Tropical

UV index in Alappuzha 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 Alappuzha peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 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 highExtremeExtremeVery highAug 18UV 13Jan 10UV 8
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar12Extreme
Apr12Extreme
May10Very high
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec8Very high

Air quality in Alappuzha 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 Alappuzha is worst in January — around 108 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (July, 32 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 13107 µg/m³Jul 2033 µg/m³
PM2.5 (µg/m³)Level
Jan108Unhealthy
Feb101Unhealthy
Mar86Unhealthy
Apr76Unhealthy
May63Unhealthy
Jun39Poor
Jul32Moderate
Aug34Moderate
Sep42Poor
Oct69Unhealthy
Nov96Unhealthy
Dec105Unhealthy
Location & terrain

Where is Alappuzha?

Alappuzha sits at 9.5°N, 76.3°E, 8 m above sea level, in India. The nearest listed city is Kochi, 51 km away.

MaduraiMysoreMannarJaffna

Topography around Alappuzha

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

Within 3 km, the terrain around Alappuzha has only modest variations in elevation — a maximum elevation change of 14 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,483 m.

The land around Alappuzha is covered by water (33%), artificial surfaces (32%) and trees (30%) within 3 km, water (59%) within 16 km, and trees (54%) and water (39%) within 80 km.

3 km
14 m
16 km
23 m
80 km
1,483 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Kochi 51 km · Munnar 105 km · Thaikattussery 108 km · Irimbiliyam 155 km · Madurai 202 km · Mysore 314 km · Mannar 394 km · Jaffna 404 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 Alappuzha (9.49°, 76.3264°, 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).