Katunayaka weather in October

In October, Katunayaka sees average daytime highs of 29°C and overnight lows near 24°C, with 341 mm of rain across 28 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 1st-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 4% of the time in October, and the air most often feels miserable.

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

Daytime high
29°
8th warmest
Overnight low
24°
5th coldest
Rainfall
341 mm
28 wet days
Daylight
11 h 48 min
6:00 AM – 5:51 PM
Cloud cover
82%
9th clearest
Wind
8 km/h
9th windiest
Solar energy
4.63 kWh/m²
Travel score
3.0
out of 10

Katunayaka is suburb in Western Province.

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 Katunayaka 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, October runs on par with September and on par with November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
243024
253024
263024
273024
283024
293024
303024
313024

How October really feels in Katunayaka

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.

Katunayaka weather by month

How October compares with the rest of the year at a glance. October is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°486.711.64.9
Feb32° / 24°486.611.84.1
Mar33° / 25°9115123.2
Apr32° / 25°18326.412.22.6
May30° / 26°23428.912.32.6
Jun29° / 26°25328.612.42.8
Jul29° / 25°23028.412.43.0
Aug29° / 25°20928.612.23.0
Sep29° / 25°23227.4123.0
Oct29° / 24°3412811.83.0
Nov30° / 24°29922.711.73.4
Dec30° / 23°14814.311.64.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 11% of October, with mostly cloudy or overcast conditions the remaining 85%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11684
21684
31684
41684
51684
61684
71585
81585
91585
101486
111486
121486
131486
141486
151387
161387
171387
181387
191387
201387
211387
221387
231387
241585
251585
261585
271585
281585
291684
301684
311585

Chance of precipitation in October

Any precipitation

Katunayaka gets around 341 mm of rain over 28 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 92% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
391
491
591
691
791
891
991
1091
1191
1291
1392
1492
1591
1691
1791
1891
1991
2090
2190
2290
2389
2489
2589
2689
2788
2888
2988
3088
3188

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the miserable band about 66% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12674
22773
32773
42872
52872
62872
72872
82971
92971
102971
112971
123070
133070
143169
153268
163367
173367
183466
193565
203664
213763
223862
233862
243961
254060
264159
274258
284258
294357
304456
314555

Wind in October

Winds average 8 km/h in October.

Across October, daily wind ranges from about 7 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 6:01 AM to 6:02 AM, and sunset from 5:58 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:015:58
211.96:015:57
311.96:015:57
411.96:015:56
511.96:015:56
611.96:015:55
711.96:015:55
811.96:015:54
911.96:015:54
1011.96:005:53
1111.96:005:53
1211.96:005:52
1311.96:005:52
1411.96:005:51
1511.86:005:51
1611.86:005:51
1711.86:005:50
1811.86:005:50
1911.86:005:50
2011.86:005:49
2111.86:005:49
2211.86:005:49
2311.86:015:48
2411.86:015:48
2511.86:015:48
2611.86:015:47
2711.86:015:47
2811.86:015:47
2911.86:015:47
3011.86:015:47
3111.76:025:46

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.63 kWh/m².

For context, solar energy here swings from a low near 4.49 kWh/m² to a high of 6.27 kWh/m² in March across the year — October's 4.63 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in October

Hazard calendar for Katunayaka

In seasonPeak

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

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

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

Is October a good time to visit Katunayaka?

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

3.0
Sightseeing
6th-best month of the year
4.0
Beach & pool
7th-best month of the year

October is a weaker month for outdoor sightseeing in Katunayaka.

What to pack for Katunayaka in October

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

In October, Katunayaka sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Katunayaka in October

The nearest coast averages about 28°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 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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May29Tropical
Jun28Tropical
Jul28Warm
Aug27Warm
Sep28Warm
Oct28Tropical
Nov29Tropical
Dec28Tropical

UV index in Katunayaka 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 Katunayaka peaks around February 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highFeb 17UV 13Dec 15UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Air quality in Katunayaka 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 Katunayaka is worst in November — around 60 µg/m³ PM2.5 (unhealthy), about 2.4× the cleanest month (July, 25 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorUnhealthyPoorNov 1759 µg/m³Jul 2025 µg/m³
PM2.5 (µg/m³)Level
Jan45Poor
Feb41Poor
Mar57Unhealthy
Apr59Unhealthy
May42Poor
Jun27Moderate
Jul25Moderate
Aug26Moderate
Sep30Moderate
Oct49Poor
Nov60Unhealthy
Dec52Poor
Location & terrain

Where is Katunayaka?

Katunayaka sits at 7.2°N, 79.9°E, 13 m above sea level, in Sri Lanka. The nearest listed city is Negombo, 7.0 km away.

Kelaniya

Topography around Katunayaka

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

Within 3 km, the terrain around Katunayaka has only modest variations in elevation — a maximum elevation change of 36 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,145 m.

The land around Katunayaka is covered by trees (57%) and artificial surfaces (22%) within 3 km, trees (53%) and water (33%) within 16 km, and trees (60%) and water (34%) within 80 km.

3 km
36 m
16 km
70 m
80 km
2,145 m
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Negombo 7.0 km · Ja Ela 11 km · Kandana 14 km · Welisara 16 km · Hendala 20 km · Wattala 20 km · Peliyagoda 22 km · Kelaniya 24 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 Katunayaka (7.1699°, 79.8884°, elevation 13 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).