Trincomalee weather in July

In July, Trincomalee sees average daytime highs of 33°C and overnight lows near 27°C, with 31 mm of rain across 5.5 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 11th-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 7% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of July to 12 h 24 min by month's end. Set against the rest of the year, July is Trincomalee's 12th-clearest and 2nd-windiest month. For the whole year in context, see Trincomalee's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
27°
10th coldest
Rainfall
31 mm
5.5 wet days
Daylight
12 h 30 min
5:57 AM – 6:24 PM
Cloud cover
80%
12th clearest
Wind
22 km/h
2nd windiest
Solar energy
5.81 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 July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July 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 32°C and 34°C. Set against its neighbours, July runs on par with June and on par with August.

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
183327
193327
203327
213327
223327
233327
243327
253327
263327
273327
283327
293327
303327
313327

How July really feels in Trincomalee

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

Trincomalee weather by month

How July compares with the rest of the year at a glance. July is the 3rd-warmest and 11th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in July, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of July, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22377
32377
42278
52278
62179
72179
82179
92179
102179
112179
122179
132179
142179
152179
162179
171981
181981
191981
201981
211981
221981
232080
241981
251981
261981
271882
281882
291783
301882
311882

Chance of precipitation in July

Any precipitation

Trincomalee gets around 31 mm of rain over 5.5 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 20% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
112
212
313
413
514
614
715
816
916
1017
1117
1218
1319
1419
1519
1620
1720
1820
1920
2020
2120
2220
2320
2420
2520
2619
2719
2819
2919
3018
3118

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July 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
Oppressive (%)Miserable (%)
1982
2982
3982
4982
5982
6982
7973
8973
9973
10973
11964
12964
13964
14964
15964
16964
17964
18964
19964
20964
21964
22964
23973
24973
25973
26973
27982
28982
29982
30982
31982

Wind in July

Winds average 22 km/h in July.

Across July, daily wind ranges from about 22 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
123breezy
223breezy
323breezy
423breezy
523breezy
623breezy
723breezy
823breezy
923breezy
1023breezy
1122breezy
1222breezy
1322breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in July

DaylightNight

Daylight runs from about 12 h 30 min at the start of July to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over July. Sunrise moves from 5:54 AM to 6:00 AM, and sunset from 6:23 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:546:23
212.55:546:23
312.55:546:24
412.55:546:24
512.55:556:24
612.55:556:24
712.55:556:24
812.55:556:24
912.55:556:24
1012.55:566:24
1112.55:566:24
1212.55:566:24
1312.55:566:24
1412.55:576:24
1512.55:576:24
1612.55:576:24
1712.55:576:24
1812.45:576:24
1912.45:586:24
2012.45:586:24
2112.45:586:24
2212.45:586:24
2312.45:586:24
2412.45:596:24
2512.45:596:24
2612.45:596:24
2712.45:596:23
2812.45:596:23
2912.45:596:23
3012.45:596:23
3112.46:006:23

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.81 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 — July's 5.81 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
315.9Bright
Planning a trip in July

Hazard calendar for Trincomalee

In seasonPeak

None of Trincomalee's seasonal hazards are active in July. 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 July a good time to visit Trincomalee?

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

3.6
Sightseeing
7th-best month of the year
6.5
Beach & pool
5th-best month of the year

July 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 July

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

In July, Trincomalee sees daytime highs around 33°C and nights near 27°C. Pack light clothes. Worth having: sun protection and a windbreaker. About 6 days see rain.

light clothessun protectiona windbreaker

Sea temperature near Trincomalee in July

The nearest coast averages about 29°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).