Ampara weather in September

In September, Ampara sees average daytime highs of 34°C and overnight lows near 26°C, with 96 mm of rain across 16.7 wet days and about 12 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 34°C through the month. The sky is clear or mostly clear about 12% 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 Ampara's 6th-clearest and 7th-windiest month. For the whole year in context, see Ampara's year-round climate.

Daytime high
34°
5th warmest
Overnight low
26°
8th coldest
Rainfall
96 mm
16.7 wet days
Daylight
12 hours
5:56 AM – 5:59 PM
Cloud cover
73%
6th clearest
Wind
8 km/h
7th windiest
Solar energy
5.96 kWh/m²
Travel score
2.4
out of 10

Ampara is town in the Eastern Province, Sri Lanka.

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 34°C through the month.

A typical September day in Ampara reaches about 34°C in the afternoon and slips back to 26°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 36°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13426
23426
33426
43426
53426
63426
73426
83426
93426
103426
113426
123426
133426
143426
153426
163426
173426
183426
193426
203426
213426
223426
233426
243426
253426
263326
273326
283326
293326
303326

How September really feels in Ampara

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.

Ampara weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°1521811.64.6
Feb29° / 23°8313.211.84.7
Mar31° / 24°5811.2124.3
Apr33° / 25°8115.812.23.1
May34° / 26°8115.312.32.5
Jun35° / 27°4710.512.42.3
Jul35° / 27°4910.912.42.3
Aug35° / 26°631412.22.3
Sep34° / 26°9616.7122.4
Oct32° / 25°19622.811.82.8
Nov29° / 24°2572511.73.3
Dec28° / 23°26122.811.64.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% 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 70%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12575
22476
32575
42575
52773
62773
72773
82872
92971
102971
113169
123169
133268
143268
153367
163367
173367
183268
193268
203169
213169
223070
233070
243070
252971
262971
273070
283070
292971
302971

Chance of precipitation in September

Any precipitation

Ampara gets around 96 mm of rain over 16.7 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 56% and peaks near 64% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
151
251
351
451
551
651
751
852
952
1052
1152
1252
1353
1453
1554
1655
1755
1856
1957
2058
2159
2260
2360
2461
2562
2662
2763
2864
2964
3064

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 79% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
119765
218775
318775
418766
517776
617776
717776
816786
916786
1015796
1115796
1214806
1314806
1413816
1513816
1612817
1711827
1811827
1910837
2010828
219838
229829
239829
2498110
2588111
2688012
2787913
2887814
2977815
3077716

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
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
277calm
287calm
297calm
307calm

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 5:59 AM to 5:54 AM, and sunset from 6:07 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:596:07
212.15:596:07
312.15:586:06
412.15:586:06
512.15:586:05
612.15:586:04
712.15:586:04
812.15:586:03
912.15:586:03
1012.15:576:02
1112.15:576:02
1212.15:576:01
1312.15:576:01
1412.15:576:00
1512.05:575:59
1612.05:565:59
1712.05:565:58
1812.05:565:58
1912.05:565:57
2012.05:565:56
2112.05:565:56
2212.05:555:55
2312.05:555:55
2412.05:555:54
2512.05:555:54
2612.05:555:53
2712.05:555:53
2812.05:555:52
2912.05:545:51
3011.95:545:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.96 kWh/m².

For context, solar energy here swings from a low near 3.99 kWh/m² to a high of 6.18 kWh/m² in March across the year — September's 5.96 kWh/m² falls in the middle.

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 Ampara

In seasonPeak

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

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

Ampara'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 Ampara?

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

2.4
Sightseeing
9th-best month of the year
4.8
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Ampara.

What to pack for Ampara in September

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

In September, Ampara sees daytime highs around 34°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Ampara in September

The nearest coast averages about 29°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 23 km away) 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 Ampara 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 Ampara peaks around April 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeApr 15UV 14Dec 22UV 10
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar13Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec10Very high

Air quality in Ampara 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 Ampara 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 Ampara?

Ampara sits at 7.3°N, 81.7°E, 37 m above sea level, in Sri Lanka. The nearest listed city is Kalmunai, 21 km away.

BatticaloaPottuvilEravur TownBadullaEllaVakaraiPolonnaruwa

Topography around Ampara

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

Within 3 km, the terrain around Ampara has only modest variations in elevation — a maximum elevation change of 40 m around an average of 31 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 600 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,026 m.

The land around Ampara is covered by trees (55%) and cropland (20%) within 3 km, trees (46%) and cropland (40%) within 16 km, and trees (45%) and water (35%) within 80 km.

3 km
40 m
16 km
600 m
80 km
2,026 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Kalmunai 21 km · Batticaloa 46 km · Pottuvil 49 km · Eravur Town 54 km · Badulla 77 km · Ella 84 km · Vakarai 97 km · Polonnaruwa 103 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 Ampara (7.2975°, 81.682°, elevation 37 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).