Kalmunai weather in October

In October, Kalmunai sees average daytime highs of 29°C and overnight lows near 26°C, with 164 mm of rain across 20.8 wet days and about 11.8 hours of daylight. It is the 7th-warmest and 4th-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 14% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of October to 11 h 42 min by month's end. Set against the rest of the year, October is Kalmunai's 7th-clearest and 12th-windiest month. For the whole year in context, see Kalmunai's year-round climate.

Daytime high
29°
7th warmest
Overnight low
26°
6th coldest
Rainfall
164 mm
20.8 wet days
Daylight
11 h 48 min
5:53 AM – 5:43 PM
Cloud cover
72%
7th clearest
Wind
8 km/h
12th windiest
Solar energy
5.33 kWh/m²
Travel score
3.8
out of 10

Kalmunai is human settlement.

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

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

A typical October day in Kalmunai reaches about 29°C in the afternoon and slips back to 26°C overnight — a 4°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, October runs about 1°C cooler than September and about 1°C warmer than November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
172926
182926
192926
202926
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925
312925

How October really feels in Kalmunai

Once humidity and wind are folded in, October averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Kalmunai weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 24°18617.811.65.3
Feb28° / 24°951311.85.8
Mar29° / 25°609.911.95.7
Apr30° / 26°7013.412.24.5
May31° / 27°5911.612.34.0
Jun32° / 27°326.612.44.0
Jul32° / 27°317.612.44.0
Aug32° / 27°429.312.24.1
Sep31° / 26°6713.7124.0
Oct29° / 26°16420.811.83.8
Nov28° / 25°28024.711.73.9
Dec27° / 24°31022.511.64.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 18% of October, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33367
43466
53565
63565
73466
83565
93565
103565
113466
123367
133466
143367
153268
163268
173268
183268
193268
203268
213169
223169
233070
242971
252971
262971
273070
282971
292971
302971
312872

Chance of precipitation in October

Any precipitation

Kalmunai gets around 164 mm of rain over 20.8 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 67% and peaks near 80% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
155
255
355
455
556
656
757
858
959
1060
1161
1263
1364
1466
1567
1669
1770
1871
1972
2073
2174
2274
2375
2476
2576
2677
2777
2878
2979
3079
3180

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
107624
207624
307624
407624
507624
607624
707624
807624
907624
1007624
1107624
1207624
1307624
1407624
1507723
1607723
1707822
1807921
1908020
2008119
2108119
2208218
2308317
2408416
2508515
2608515
2708614
2808713
2918712
3018811
3118811

Wind in October

Winds average 8 km/h in October, the calmest month.

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
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 54 min at the start of October to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over October. Sunrise moves from 5:54 AM to 5:54 AM, and sunset from 5:50 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:545:50
211.95:535:49
311.95:535:49
411.95:535:48
511.95:535:48
611.95:535:47
711.95:535:47
811.95:535:46
911.95:535:46
1011.95:535:45
1111.95:535:45
1211.95:535:44
1311.95:535:44
1411.85:535:44
1511.85:535:43
1611.85:535:43
1711.85:535:42
1811.85:535:42
1911.85:535:42
2011.85:535:41
2111.85:535:41
2211.85:535:41
2311.85:535:40
2411.85:535:40
2511.85:535:40
2611.85:535:39
2711.85:535:39
2811.85:545:39
2911.85:545:39
3011.75:545:39
3111.75:545:38

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.33 kWh/m².

For context, solar energy here swings from a low near 4 kWh/m² to a high of 6.24 kWh/m² in March across the year — October's 5.33 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.2Bright
205.2Bright
215.2Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in October

Hazard calendar for Kalmunai

In seasonPeak

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

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

Kalmunai's monsoon runs October–January, when most of the year's rain falls.

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

Is October a good time to visit Kalmunai?

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

3.8
Sightseeing
12th-best month of the year
5.1
Beach & pool
10th-best month of the year

October is a weaker month for outdoor sightseeing in Kalmunai.

What to pack for Kalmunai in October

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

In October, Kalmunai sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Kalmunai in October

The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in May at about 30°C and coldest in January 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
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Kalmunai in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Kalmunai peaks around April 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeApr 19UV 14Dec 21UV 10
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr14Extreme
May14Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec10Very high

Air quality in Kalmunai 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 Kalmunai is worst in May — around 25 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 2125 µg/m³Dec 2118 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb19Moderate
Mar20Moderate
Apr19Moderate
May25Moderate
Jun23Moderate
Jul23Moderate
Aug23Moderate
Sep22Moderate
Oct22Moderate
Nov20Moderate
Dec18Moderate
Location & terrain

Where is Kalmunai?

Kalmunai sits at 7.4°N, 81.8°E, 10 m above sea level, in Sri Lanka. The nearest listed city is Ampara, 21 km away.

BatticaloaEravur TownPottuvilVakaraiBadullaEllaPolonnaruwa

Topography around Kalmunai

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

Within 3 km, the terrain around Kalmunai has only modest variations in elevation — a maximum elevation change of 13 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,357 m.

The land around Kalmunai is covered by water (43%) within 3 km, water (53%) and cropland (30%) within 16 km, and water (43%) and trees (38%) within 80 km.

3 km
13 m
16 km
62 m
80 km
1,357 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
October weather nearby: Ampara 21 km · Batticaloa 37 km · Eravur Town 48 km · Pottuvil 59 km · Vakarai 92 km · Badulla 98 km · Ella 105 km · Polonnaruwa 109 km

Sri Lanka travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 27% of US
price level, 2025
GDP per capita
$5,002
2025
Happiness
4.0 / 10
World Happiness, 2025
Safe drinking water
47%
of population, 2024
Homicide rate
3.3
per 100k, 2019
Road deaths
19.7
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 486
Religion
Buddhist 70%Hindu 13%Muslim 10%Roman Catholic 6%

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 Kalmunai (7.409°, 81.8347°, elevation 10 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).