Mullaittivu weather in September

In September, Mullaittivu sees average daytime highs of 32°C and overnight lows near 26°C, with 58 mm of rain across 9.8 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 15% 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 Mullaittivu's 7th-clearest and 5th-windiest month. For the whole year in context, see Mullaittivu's year-round climate.

Daytime high
32°
5th warmest
Overnight low
26°
8th coldest
Rainfall
58 mm
9.8 wet days
Daylight
12 h 06 min
6:00 AM – 6:03 PM
Cloud cover
72%
7th clearest
Wind
17 km/h
5th windiest
Solar energy
5.97 kWh/m²
Travel score
4.0
out of 10

Mullaittivu is city.

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 32°C through the month.

A typical September day in Mullaittivu reaches about 32°C in the afternoon and slips back to 26°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°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)
13226
23226
33226
43226
53226
63226
73226
83226
93226
103226
113226
123226
133226
143226
153226
163226
173226
183226
193226
203226
213226
223226
233226
243226
253126
263126
273126
283126
293126
303126

How September really feels in Mullaittivu

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.

Mullaittivu 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
Jan27° / 24°9711.311.56.2
Feb28° / 25°52711.76.8
Mar29° / 25°285.111.96.1
Apr31° / 26°488.412.24.6
May33° / 27°496.512.43.9
Jun32° / 27°223.412.54.1
Jul32° / 27°326.712.54.0
Aug32° / 27°478.712.34.0
Sep32° / 26°589.812.14.0
Oct30° / 26°17718.611.83.9
Nov28° / 25°30423.211.64.0
Dec27° / 25°24919.411.55.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 67%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12872
22971
33070
43070
53070
63169
73169
83169
93169
103367
113466
123466
133466
143466
153565
163565
173565
183565
193565
203466
213466
223466
233466
243367
253268
263466
273466
283466
293466
303466

Chance of precipitation in September

Any precipitation

Mullaittivu gets around 58 mm of rain over 9.8 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 32% and peaks near 45% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
128
228
328
429
529
629
729
829
928
1028
1128
1227
1327
1427
1527
1628
1728
1829
1930
2031
2133
2234
2336
2438
2539
2641
2742
2844
2944
3045

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
18812
28812
38812
48812
58812
68812
78812
88812
98812
108911
118911
128911
138911
148911
158911
168911
178911
188911
198812
208812
218812
228713
238614
248515
258515
268416
278317
288218
298218
308119

Wind in September

Winds average 17 km/h in September.

Across September, daily wind ranges from about 15 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3015light 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 6:01 AM to 5:58 AM, and sunset from 6:12 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:016:12
212.26:016:11
312.26:016:11
412.26:016:10
512.16:016:09
612.16:016:09
712.16:016:08
812.16:006:08
912.16:006:07
1012.16:006:06
1112.16:006:06
1212.16:006:05
1312.16:006:04
1412.16:006:04
1512.16:006:03
1612.16:006:03
1712.05:596:02
1812.05:596:01
1912.05:596:01
2012.05:596:00
2112.05:595:59
2212.05:595:59
2312.05:595:58
2412.05:595:58
2512.05:595:57
2612.05:595:56
2712.05:585:56
2811.95:585:55
2911.95:585:54
3011.95:585:54

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 4.21 kWh/m² to a high of 6.58 kWh/m² in March across the year — September's 5.97 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
216.0Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Hazard calendar for Mullaittivu

In seasonPeak

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

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

Mullaittivu's monsoon runs October–December, 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 Mullaittivu?

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

4.0
Sightseeing
7th-best month of the year
6.3
Beach & pool
9th-best month of the year

September is a reasonable time to visit Mullaittivu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mullaittivu in September

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

In September, Mullaittivu sees daytime highs around 32°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Mullaittivu 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 14 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
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec27Warm

UV index in Mullaittivu 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 Mullaittivu peaks around May 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMay 12UV 14Dec 23UV 9
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May14Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec9Very high

Air quality in Mullaittivu 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 Mullaittivu is worst in May — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1821 µg/m³Nov 1716 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb18Moderate
Mar17Moderate
Apr16Moderate
May21Moderate
Jun18Moderate
Jul17Moderate
Aug18Moderate
Sep16Moderate
Oct17Moderate
Nov15Moderate
Dec16Moderate
Location & terrain

Where is Mullaittivu?

Mullaittivu sits at 9.3°N, 80.8°E, 8 m above sea level, in Sri Lanka. The nearest listed city is Vavuniya, 67 km away.

VavuniyaPoint PedroTrincomaleeValvedditturaiJaffnaMannarAnuradhapuraVakarai

Topography around Mullaittivu

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

Within 3 km, the terrain around Mullaittivu has only modest variations in elevation — a maximum elevation change of 11 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 79 m; within 80 km, only modest variations in elevation — a maximum elevation change of 241 m.

The land around Mullaittivu is covered by water (57%) within 3 km, water (57%) and trees (27%) within 16 km, and trees (43%) and water (42%) within 80 km.

3 km
11 m
16 km
79 m
80 km
241 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Vavuniya 67 km · Point Pedro 88 km · Trincomalee 89 km · Valvedditturai 94 km · Jaffna 99 km · Mannar 107 km · Anuradhapura 115 km · Vakarai 143 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 Mullaittivu (9.268°, 80.815°, 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).