Pottuvil weather in September

In September, Pottuvil sees average daytime highs of 33°C and overnight lows near 26°C, with 55 mm of rain across 12.5 wet days and about 12 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 13% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Pottuvil's 6th-clearest and 4th-windiest month. For the whole year in context, see Pottuvil's year-round climate.

Daytime high
33°
5th warmest
Overnight low
26°
8th coldest
Rainfall
55 mm
12.5 wet days
Daylight
12 hours
5:56 AM – 5:58 PM
Cloud cover
72%
6th clearest
Wind
13 km/h
4th windiest
Solar energy
5.97 kWh/m²
Travel score
3.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Pottuvil reaches about 33°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103326
113326
123326
133326
143326
153326
163326
173326
183326
193326
203326
213326
223326
233326
243326
253326
263326
273326
283326
293226
303226

How September really feels in Pottuvil

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.

Pottuvil weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°14416.111.65.1
Feb29° / 24°8012.511.85.0
Mar31° / 24°6011.1124.6
Apr32° / 25°8816.512.13.5
May33° / 26°6211.712.33.1
Jun34° / 27°368.912.42.9
Jul34° / 26°389.712.43.0
Aug33° / 26°4111.612.23.0
Sep33° / 26°5512.5123.1
Oct31° / 25°17621.311.83.2
Nov29° / 24°25824.611.73.5
Dec28° / 24°25921.611.64.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in September.

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

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12773
22872
32872
42872
53070
63070
73070
83169
93268
103268
113367
123367
133367
143466
153466
163466
173466
183367
193367
203367
213367
223268
233268
243268
253268
263268
273169
283268
293268
303268

Chance of precipitation in September

Any precipitation

Pottuvil gets around 55 mm of rain over 12.5 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 42% and peaks near 53% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
140
240
339
439
538
638
737
837
937
1037
1137
1237
1337
1438
1539
1639
1740
1841
1942
2043
2144
2246
2347
2448
2549
2650
2751
2852
2952
3053

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
113843
214833
314833
415823
515823
615823
715823
815823
914833
1014833
1114833
1213843
1312862
1411872
1511872
1610882
179892
188902
198902
207903
217903
227903
237903
246904
256904
266895
276895
286886
296877
306877

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light 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
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2512light breeze
2612light breeze
2712light breeze
2812calm
2912calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 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 12 minutes over September. Sunrise moves from 5:58 AM to 5:54 AM, and sunset from 6:06 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:586:06
212.15:586:06
312.15:586:05
412.15:586:05
512.15:586:04
612.15:586:04
712.15:576:03
812.15:576:03
912.15:576:02
1012.15:576:02
1112.15:576:01
1212.15:576:00
1312.15:566:00
1412.15:565:59
1512.05:565:59
1612.05:565:58
1712.05:565:58
1812.05:565:57
1912.05:555:56
2012.05:555:56
2112.05:555:55
2212.05:555:55
2312.05:555:54
2412.05:555:54
2512.05:545:53
2612.05:545:53
2712.05:545:52
2812.05:545:51
2912.05:545:51
3011.95:545:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.97 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.15 kWh/m² in March across the year — September's 5.97 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.0Intense
156.0Intense
166.0Intense
176.0Intense
186.0Bright
196.0Bright
206.0Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Hazard calendar for Pottuvil

In seasonPeak

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

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

Pottuvil'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 September a good time to visit Pottuvil?

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

3.1
Sightseeing
8th-best month of the year
5.5
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Pottuvil.

What to pack for Pottuvil in September

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

In September, Pottuvil sees daytime highs around 33°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Pottuvil in September

The nearest coast averages about 28°C in September — 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 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
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Pottuvil in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Pottuvil peaks around April 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeApr 16UV 14Dec 21UV 10
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar13Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Pottuvil 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 Pottuvil is worst in May — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1921 µg/m³Dec 2216 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar17Moderate
Apr18Moderate
May22Moderate
Jun20Moderate
Jul20Moderate
Aug20Moderate
Sep18Moderate
Oct21Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Pottuvil?

Pottuvil sits at 6.9°N, 81.8°E, 7 m above sea level, in Sri Lanka. The nearest listed city is Ampara, 49 km away.

AmparaKalmunaiKataragamaBadullaEllaBatticaloaEravur TownHambantota

Topography around Pottuvil

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

Within 3 km, the terrain around Pottuvil has only modest variations in elevation — a maximum elevation change of 22 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 177 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,024 m.

The land around Pottuvil is covered by cropland (30%) and water (29%) within 3 km, water (45%) and trees (35%) within 16 km, and trees (46%) and water (41%) within 80 km.

3 km
22 m
16 km
177 m
80 km
2,024 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Ampara 49 km · Kalmunai 59 km · Kataragama 75 km · Badulla 86 km · Ella 86 km · Batticaloa 94 km · Eravur Town 103 km · Hambantota 115 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 Pottuvil (6.8762°, 81.8267°, elevation 7 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).