Homagama weather in December

In December, Homagama sees average daytime highs of 30°C and overnight lows near 23°C, with 214 mm of rain across 19.2 wet days and about 11.6 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 16% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of December to 11 h 36 min by month's end. Set against the rest of the year, December is Homagama's 5th-clearest and 7th-windiest month. For the whole year in context, see Homagama's year-round climate.

Daytime high
30°
6th warmest
Overnight low
23°
2nd coldest
Rainfall
214 mm
19.2 wet days
Daylight
11 h 36 min
6:18 AM – 5:54 PM
Cloud cover
72%
5th clearest
Wind
7 km/h
7th windiest
Solar energy
4.59 kWh/m²
Travel score
3.9
out of 10

Homagama is suburb in Colombo District, Western Province, Sri Lanka.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Homagama reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in Homagama

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

Homagama weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°9411.111.64.4
Feb32° / 24°8510.711.84.1
Mar32° / 24°10516.9123.4
Apr32° / 25°20826.612.12.6
May30° / 25°28929.912.32.6
Jun29° / 25°28329.112.42.8
Jul29° / 25°24329.312.42.9
Aug29° / 25°22429.312.23.0
Sep29° / 25°25828123.0
Oct29° / 24°35728.111.83.0
Nov30° / 24°36824.611.73.2
Dec30° / 23°21419.211.63.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32872
42872
52872
62872
72872
82872
92872
102872
112872
122971
132971
142971
153070
163070
173070
183169
193268
203367
213466
223565
233763
243763
253862
264060
274159
284258
294357
304456
314456

Chance of precipitation in December

Any precipitation

Homagama gets around 214 mm of rain over 19.2 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 62% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
171
270
369
468
567
667
767
866
966
1066
1167
1267
1367
1467
1566
1666
1766
1865
1964
2063
2162
2260
2358
2456
2554
2652
2750
2849
2947
3045
3144

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1057124
2057223
3067123
4067222
5077122
6077122
7077122
8087022
9087022
10087121
11087121
12087121
13097120
14097120
15097219
160107218
170107317
180107416
190117415
200117514
210127414
220137413
230137512
240147511
251157311
261167310
27117739
28118729
29119728
30120718
31220717

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 36 min at the start of December to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:11 AM to 6:25 AM, and sunset from 5:49 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:115:49
211.66:115:49
311.66:125:49
411.66:125:50
511.66:135:50
611.66:135:50
711.66:145:51
811.66:145:51
911.66:155:51
1011.66:155:52
1111.66:165:52
1211.66:165:53
1311.66:175:53
1411.66:175:53
1511.66:185:54
1611.66:185:54
1711.66:185:55
1811.66:195:55
1911.66:195:56
2011.66:205:56
2111.66:205:57
2211.66:215:57
2311.66:215:58
2411.66:225:58
2511.66:225:58
2611.66:235:59
2711.66:235:59
2811.66:246:00
2911.66:246:00
3011.66:246:01
3111.66:256:01

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.59 kWh/m².

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 6.06 kWh/m² in March across the year — December's 4.59 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.7Bright
254.7Bright
264.7Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.9Bright
Planning a trip in December

Hazard calendar for Homagama

In seasonPeak

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

Homagama 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 December a good time to visit Homagama?

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

3.9
Sightseeing
3rd-best month of the year
5.3
Beach & pool
4th-best month of the year

December is a weaker month for outdoor sightseeing in Homagama.

What to pack for Homagama in December

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

In December, Homagama sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Homagama in December

The nearest coast averages about 28°C in December — 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 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 Homagama in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Homagama 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 Homagama in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Homagama 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 Homagama?

Homagama sits at 6.8°N, 80.0°E, 37 m above sea level, in Sri Lanka. The nearest listed city is Maharagama, 8.0 km away.

Topography around Homagama

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

Within 3 km, the terrain around Homagama has only modest variations in elevation — a maximum elevation change of 62 m around an average of 25 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 218 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,182 m.

The land around Homagama is covered by trees (73%) within 3 km, trees (73%) within 16 km, and trees (65%) and water (31%) within 80 km.

3 km
62 m
16 km
218 m
80 km
2,182 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Maharagama 8.0 km · Battaramulla South 11 km · Hanwella Ihala 11 km · Sri Jayewardenepura Kotte 11 km · Pita Kotte 12 km · Mulleriyawa 13 km · Kotikawatta 14 km · Dehiwala-Mount Lavinia 14 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 Homagama (6.844°, 80.0024°, elevation 37 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).