Trincomalee weather in August

In August, Trincomalee sees average daytime highs of 33°C and overnight lows near 27°C, with 45 mm of rain across 7.8 wet days and about 12.3 hours of daylight. It is the 4th-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 10% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of August to 12 h 12 min by month's end. Set against the rest of the year, August is Trincomalee's 10th-clearest and 3rd-windiest month. For the whole year in context, see Trincomalee's year-round climate.

Daytime high
33°
4th warmest
Overnight low
27°
9th coldest
Rainfall
45 mm
7.8 wet days
Daylight
12 h 18 min
6:01 AM – 6:18 PM
Cloud cover
77%
10th clearest
Wind
21 km/h
3rd windiest
Solar energy
5.98 kWh/m²
Travel score
3.6
out of 10

Trincomalee is city in Sri Lanka.

Density
14,456/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Trincomalee reaches about 33°C in the afternoon and slips back to 27°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 34°C. Set against its neighbours, August runs on par with July and on par with September.

25°28°30°33°35°151015202531
Avg high (°C)Avg low (°C)
13327
23327
33327
43327
53327
63327
73327
83327
93327
103327
113327
123327
133327
143327
153327
163327
173327
183326
193326
203326
213326
223326
233326
243326
253326
263326
273326
283326
293326
303326
313326

How August really feels in Trincomalee

Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Trincomalee weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 25°12614.511.65.8
Feb28° / 25°739.711.76.3
Mar29° / 25°407.211.95.8
Apr31° / 26°561012.24.4
May33° / 27°488.212.43.6
Jun33° / 27°183.212.53.6
Jul33° / 27°315.512.43.6
Aug33° / 27°457.812.33.6
Sep33° / 26°6510.712.13.5
Oct31° / 26°18618.511.83.6
Nov28° / 25°30024.111.63.9
Dec27° / 25°27720.911.54.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21981
31981
41981
52179
62179
72080
82080
92080
102080
112080
122179
132179
142179
152179
162179
172179
182179
192278
202278
212377
222476
232476
242476
252476
262575
272575
282575
292575
302575
312575

Chance of precipitation in August

Any precipitation

Trincomalee gets around 45 mm of rain over 7.8 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 29% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
118
218
319
419
520
621
721
822
923
1024
1125
1226
1327
1427
1528
1629
1729
1829
1929
2029
2129
2229
2328
2428
2528
2628
2728
2828
2928
3028
3128

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
10982
20982
30982
40982
50982
60982
70982
80982
90973
100973
110973
120973
130973
140973
150973
160973
170973
180973
190973
200973
210973
220982
230982
240982
250982
260982
271972
281972
291972
301963
311963

Wind in August

Winds average 21 km/h in August.

Across August, daily wind ranges from about 20 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
122breezy
222breezy
322breezy
422breezy
522breezy
622breezy
722breezy
822breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2220breezy
2320breezy
2420breezy
2520breezy
2620light breeze
2720light breeze
2820light breeze
2920light breeze
3020light breeze
3120light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 24 min at the start of August to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over August. Sunrise moves from 6:00 AM to 6:00 AM, and sunset from 6:23 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:006:23
212.46:006:22
312.46:006:22
412.46:006:22
512.46:006:22
612.46:006:21
712.36:006:21
812.36:006:21
912.36:006:20
1012.36:006:20
1112.36:016:20
1212.36:016:19
1312.36:016:19
1412.36:016:19
1512.36:016:18
1612.36:016:18
1712.36:016:17
1812.36:016:17
1912.36:016:16
2012.36:016:16
2112.26:016:15
2212.26:016:15
2312.26:006:15
2412.26:006:14
2512.26:006:14
2612.26:006:13
2712.26:006:13
2812.26:006:12
2912.26:006:11
3012.26:006:11
3112.26:006:10

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.98 kWh/m².

For context, solar energy here swings from a low near 4.16 kWh/m² to a high of 6.51 kWh/m² in March across the year — August's 5.98 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
76.0Bright
86.0Bright
96.0Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in August

Hazard calendar for Trincomalee

In seasonPeak

None of Trincomalee's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

Trincomalee'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 August a good time to visit Trincomalee?

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

3.6
Sightseeing
7th-best month of the year
6.2
Beach & pool
7th-best month of the year

August is a weaker month for outdoor sightseeing in Trincomalee. The water and warmth also suit a beach or pool day.

What to pack for Trincomalee in August

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

In August, Trincomalee sees daytime highs around 33°C and nights near 27°C. Pack light clothes. Worth having: sun protection and a windbreaker. About 8 days see rain.

light clothessun protectiona windbreaker

Sea temperature near Trincomalee in August

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

The sea at the nearest coast (about 17 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 Trincomalee in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Trincomalee peaks around May 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMay 10UV 13Dec 20UV 9
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May14Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec9Very high

Air quality in Trincomalee in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Trincomalee is worst in May — around 28 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1028 µg/m³Jul 2120 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb21Moderate
Mar24Moderate
Apr27Moderate
May28Moderate
Jun21Moderate
Jul20Moderate
Aug20Moderate
Sep21Moderate
Oct25Moderate
Nov24Moderate
Dec22Moderate
Location & terrain

Where is Trincomalee?

Trincomalee sits at 8.6°N, 81.2°E, 10 m above sea level, in Sri Lanka. The nearest listed city is Vakarai, 54 km away.

VakaraiPolonnaruwaVavuniyaSigiriyaMullaittivuAnuradhapuraEravur TownDambulla

Topography around Trincomalee

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

Within 3 km, the terrain around Trincomalee has only modest variations in elevation — a maximum elevation change of 78 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 161 m; within 80 km, large variations in elevation — a maximum elevation change of 684 m.

The land around Trincomalee is covered by water (62%) within 3 km, water (55%) and trees (24%) within 16 km, and trees (41%) and water (38%) within 80 km.

3 km
78 m
16 km
161 m
80 km
684 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
August weather nearby: Vakarai 54 km · Polonnaruwa 75 km · Vavuniya 83 km · Sigiriya 87 km · Mullaittivu 89 km · Anuradhapura 94 km · Eravur Town 98 km · Dambulla 102 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 Trincomalee (8.5778°, 81.2289°, 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).