Colombo weather in June

In June, Colombo sees average daytime highs of 29°C and overnight lows near 26°C, with 243 mm of rain across 26.8 wet days and about 12.4 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 4% of the time in June, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of June to 12 h 24 min by month's end. Set against the rest of the year, June is Colombo's 12th-clearest and 1st-windiest month. For the whole year in context, see Colombo's year-round climate.

Daytime high
29°
8th warmest
Overnight low
26°
11th coldest
Rainfall
243 mm
26.8 wet days
Daylight
12 h 24 min
5:59 AM – 6:23 PM
Cloud cover
83%
12th clearest
Wind
20 km/h
1st windiest
Solar energy
4.84 kWh/m²
Travel score
3.2
out of 10

Colombo is largest city and de facto capital of Sri Lanka.

Air quality
Elevated
PM2.5 23.6 µg/m³ · 2019

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical June day in Colombo reaches about 29°C in the afternoon and slips back to 26°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, June runs about 1°C cooler than May and on par with July.

24°26°28°30°32°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926

How June really feels in Colombo

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

Colombo weather by month

How June compares with the rest of the year at a glance. June is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°537.911.65.3
Feb30° / 25°547.811.85.1
Mar30° / 26°7514.9124.3
Apr30° / 26°16624.812.13.2
May30° / 27°27928.912.32.9
Jun29° / 26°24326.812.43.2
Jul28° / 26°18324.412.43.7
Aug28° / 26°16823.712.23.9
Sep28° / 26°22324.5123.7
Oct29° / 25°3262611.83.5
Nov29° / 25°30723.711.73.6
Dec29° / 25°16415.911.64.6

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in June, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 11% of June, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21288
31189
41189
51189
61090
71090
81189
91288
101288
111288
121387
131387
141585
151585
161684
171684
181684
191783
201783
211783
221783
231882
241882
251882
261882
271783
281684
291684
301684

Chance of precipitation in June

Any precipitation

Colombo gets around 243 mm of rain over 26.8 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 90% and peaks near 95% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
195
295
395
495
595
694
794
893
993
1092
1192
1291
1390
1490
1589
1689
1788
1888
1987
2087
2186
2286
2386
2486
2586
2686
2785
2885
2985
3084

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

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

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1298
2298
3397
4397
5397
6397
7397
8496
9496
10496
11397
12397
13397
14397
15397
16397
17298
18298
19298
20298
21298
22298
23397
24397
25397
26496
27496
28595
29595
30694

Wind in June

Winds average 20 km/h in June, the windiest month of the year.

Across June, daily wind ranges from about 19 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
720light breeze
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620light breeze
1720light breeze
1820light breeze
1920light breeze
2020light breeze
2120light breeze
2220light breeze
2320light breeze
2420light breeze
2520light breeze
2620light breeze
2720light breeze
2820light breeze
2920light breeze
3020light breeze

Sunrise & sunset in June

DaylightNight

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

Days grow by about 0 minutes over June. Sunrise moves from 5:57 AM to 6:02 AM, and sunset from 6:19 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:576:19
212.45:576:20
312.45:576:20
412.45:576:20
512.45:576:20
612.45:576:20
712.45:576:21
812.45:586:21
912.45:586:21
1012.45:586:21
1112.45:586:22
1212.45:586:22
1312.45:586:22
1412.45:586:22
1512.45:596:23
1612.45:596:23
1712.45:596:23
1812.45:596:23
1912.45:596:24
2012.46:006:24
2112.46:006:24
2212.46:006:24
2312.46:006:24
2412.46:006:25
2512.46:016:25
2612.46:016:25
2712.46:016:25
2812.46:016:25
2912.46:026:26
3012.46:026:26

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.84 kWh/m².

For context, solar energy here swings from a low near 4.64 kWh/m² to a high of 6.31 kWh/m² in March across the year — June's 4.84 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in June

Hazard calendar for Colombo

In seasonPeak

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

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

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is June a good time to visit Colombo?

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

3.2
Sightseeing
10th-best month of the year
4.0
Beach & pool
11th-best month of the year

June is a weaker month for outdoor sightseeing in Colombo.

What to pack for Colombo in June

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

In June, Colombo sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Colombo in June

The nearest coast averages about 28°C in June — 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 August 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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May29Tropical
Jun28Tropical
Jul28Warm
Aug27Warm
Sep28Warm
Oct28Tropical
Nov29Tropical
Dec28Tropical

UV index in Colombo in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Colombo peaks around September 10 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highSep 10UV 13Dec 15UV 10
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Air quality in Colombo in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Colombo is worst in February — around 33 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (September, 16 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Colombo's WHO annual average of 23.6 µg/m³.

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 1433 µg/m³Sep 1116 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb33Moderate
Mar32Moderate
Apr25Moderate
May21Moderate
Jun17Moderate
Jul16Moderate
Aug16Moderate
Sep16Moderate
Oct18Moderate
Nov27Moderate
Dec30Moderate
Location & terrain

Where is Colombo?

Colombo sits at 6.9°N, 79.8°E, 7 m above sea level, in Sri Lanka. The nearest listed city is Kolonnawa, 4.0 km away.

Topography around Colombo

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

Within 3 km, the terrain around Colombo has only modest variations in elevation — a maximum elevation change of 32 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,145 m.

The land around Colombo is covered by artificial surfaces (45%) and water (38%) within 3 km, water (55%), artificial surfaces (22%) and trees (20%) within 16 km, and trees (59%) and water (37%) within 80 km.

3 km
32 m
16 km
71 m
80 km
2,145 m
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Kolonnawa 4.0 km · Peliyagoda 5.0 km · Kotikawatta 7.0 km · Hendala 7.0 km · Wattala 8.0 km · Pita Kotte 8.0 km · Kelaniya 8.0 km · Sri Jayewardenepura Kotte 9.0 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 Colombo (6.9355°, 79.8487°, 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).