Ratnapura weather in June

In June, Ratnapura sees average daytime highs of 26°C and overnight lows near 22°C, with 267 mm of rain across 27.9 wet days and about 12.4 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 1% of the time in June, and the air most often feels oppressive.

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 Ratnapura's 11th-clearest and 2nd-windiest month. For the whole year in context, see Ratnapura's year-round climate.

Daytime high
26°
9th warmest
Overnight low
22°
11th coldest
Rainfall
267 mm
27.9 wet days
Daylight
12 h 24 min
5:57 AM – 6:20 PM
Cloud cover
86%
11th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.74 kWh/m²
Travel score
3.6
out of 10

Ratnapura is city in Sabaragamuwa, Sri Lanka.

Density
2,392/km²
people per km²

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 26°C through the month.

A typical June day in Ratnapura reaches about 26°C in the afternoon and slips back to 22°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 27°C. Set against its neighbours, June runs about 1°C cooler than May and on par with July.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12722
22722
32722
42722
52722
62722
72622
82622
92622
102622
112622
122622
132622
142622
152622
162622
172622
182622
192622
202622
212622
222622
232622
242622
252622
262621
272621
282621
292621
302621

Ratnapura weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 19°30822.811.74.5
Feb28° / 19°27920.511.84.6
Mar28° / 20°30927.4123.7
Apr28° / 21°4682912.13.3
May27° / 22°31029.612.33.4
Jun26° / 22°26727.912.43.6
Jul26° / 21°24628.512.33.7
Aug26° / 21°22828.312.23.7
Sep26° / 21°24626123.9
Oct27° / 21°49727.511.93.8
Nov27° / 20°66126.911.73.8
Dec27° / 20°51526.111.64.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 8% of June, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2694
3694
4694
5694
6694
7694
8694
9793
10793
11793
12892
13892
14991
15991
161090
171189
181288
191288
201288
211288
221288
231387
241387
251387
261387
271189
281189
291189
301090

Chance of precipitation in June

Any precipitation

Ratnapura gets around 267 mm of rain over 27.9 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 93% and peaks near 96% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
195
295
395
496
596
696
795
895
995
1095
1195
1294
1394
1494
1593
1693
1793
1893
1992
2092
2192
2292
2391
2491
2591
2691
2791
2891
2991
3091

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the oppressive band about 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1694
2694
3793
4793
5892
6991
7991
81090
91189
101189
111288
121288
131387
141387
151486
161486
171585
181585
191585
201684
211684
221684
231783
241783
251882
261882
271981
282080
292179
302278

Wind in June

Winds average 7 km/h in June.

Across June, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:55 AM to 6:00 AM, and sunset from 6:17 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:556:17
212.45:556:17
312.45:556:17
412.45:556:17
512.45:556:18
612.45:566:18
712.45:566:18
812.45:566:18
912.45:566:19
1012.45:566:19
1112.45:566:19
1212.45:566:19
1312.45:576:19
1412.45:576:20
1512.45:576:20
1612.45:576:20
1712.45:576:20
1812.45:576:21
1912.45:586:21
2012.45:586:21
2112.45:586:21
2212.45:586:22
2312.45:586:22
2412.45:596:22
2512.45:596:22
2612.45:596:22
2712.45:596:23
2812.46:006:23
2912.46:006:23
3012.46:006:23

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.74 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 6.05 kWh/m² in March across the year — June's 4.74 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.6Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in June

Hazard calendar for Ratnapura

In seasonPeak

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

Ratnapura 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 Ratnapura?

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

3.6
Sightseeing
10th-best month of the year
3.6
Beach & pool
11th-best month of the year

June is a weaker month for outdoor sightseeing in Ratnapura.

What to pack for Ratnapura in June

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

In June, Ratnapura sees daytime highs around 26°C and nights near 22°C. Pack rain gear. Worth having: light clothes and sun protection. About 28 days see rain.

rain gearlight clothessun protection

Sea temperature near Ratnapura 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 at the nearest coast (about 59 km away) is warmest in April at about 30°C and coldest in August near 28°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
Aug28Warm
Sep28Warm
Oct28Tropical
Nov29Tropical
Dec28Tropical

UV index in Ratnapura 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 Ratnapura peaks around April 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeApr 17UV 14Dec 17UV 10
UV index (midday)Level
Jan11Extreme
Feb14Extreme
Mar13Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in Ratnapura 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 Ratnapura is worst in January — around 84 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (July, 29 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 1483 µg/m³Jul 2129 µg/m³
PM2.5 (µg/m³)Level
Jan84Unhealthy
Feb78Unhealthy
Mar73Unhealthy
Apr62Unhealthy
May44Poor
Jun31Moderate
Jul29Moderate
Aug30Moderate
Sep35Poor
Oct52Poor
Nov74Unhealthy
Dec81Unhealthy
Location & terrain

Where is Ratnapura?

Ratnapura sits at 6.7°N, 80.4°E, 73 m above sea level, in Sri Lanka. The nearest listed city is Hatton, 31 km away.

HattonHanwella IhalaHomagamaKalutaraBeruwalaNuwara EliyaBentotaPanadura

Topography around Ratnapura

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

Within 3 km, the terrain around Ratnapura has significant variations in elevation — a maximum elevation change of 364 m around an average of 79 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,947 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,500 m.

The land around Ratnapura is covered by trees (93%) within 3 km, trees (98%) within 16 km, and trees (79%) within 80 km.

3 km
364 m
16 km
1,947 m
80 km
2,500 m
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Hatton 31 km · Hanwella Ihala 43 km · Homagama 48 km · Kalutara 50 km · Beruwala 52 km · Nuwara Eliya 53 km · Bentota 54 km · Panadura 55 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 Ratnapura (6.6858°, 80.4036°, elevation 73 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).