Sri Jayewardenepura Kotte weather in December
In December, Sri Jayewardenepura Kotte sees average daytime highs of 30°C and overnight lows near 23°C, with 178 mm of rain across 16.1 wet days and about 11.6 hours of daylight. It is the 6th-warmest and 9th-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 19% 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 Sri Jayewardenepura Kotte's 4th-clearest and 7th-windiest month. For the whole year in context, see Sri Jayewardenepura Kotte's year-round climate.
- Daytime high
- 30°
- 6th warmest
- Overnight low
- 23°
- 2nd coldest
- Rainfall
- 178 mm
- 16.1 wet days
- Daylight
- 11 h 36 min
- 6:18 AM – 5:55 PM
- Cloud cover
- 70%
- 4th clearest
- Wind
- 9 km/h
- 7th windiest
- Solar energy
- 4.61 kWh/m²
- Travel score
- 4.1
- out of 10
Sri Jayewardenepura Kotte is administrative capital of Sri Lanka.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 30°C through the month.
A typical December day in Sri Jayewardenepura Kotte 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 32°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 23 |
| 2 | 30 | 23 |
| 3 | 30 | 23 |
| 4 | 30 | 23 |
| 5 | 30 | 23 |
| 6 | 30 | 23 |
| 7 | 30 | 23 |
| 8 | 30 | 23 |
| 9 | 30 | 23 |
| 10 | 30 | 23 |
| 11 | 30 | 23 |
| 12 | 30 | 23 |
| 13 | 30 | 23 |
| 14 | 30 | 23 |
| 15 | 30 | 23 |
| 16 | 30 | 23 |
| 17 | 30 | 23 |
| 18 | 30 | 23 |
| 19 | 30 | 23 |
| 20 | 30 | 23 |
| 21 | 30 | 23 |
| 22 | 30 | 23 |
| 23 | 30 | 23 |
| 24 | 30 | 23 |
| 25 | 30 | 23 |
| 26 | 30 | 23 |
| 27 | 30 | 23 |
| 28 | 30 | 23 |
| 29 | 31 | 23 |
| 30 | 31 | 23 |
| 31 | 31 | 23 |
How December really feels in Sri Jayewardenepura Kotte
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.
The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Sri Jayewardenepura Kotte weather by month
How December compares with the rest of the year at a glance. December is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 23° | 66 | 8.4 | 11.6 | 4.4 |
| Feb | 33° / 24° | 65 | 8.6 | 11.8 | 3.8 |
| Mar | 33° / 25° | 94 | 14.8 | 12 | 3.1 |
| Apr | 32° / 25° | 192 | 25.4 | 12.1 | 2.5 |
| May | 31° / 26° | 264 | 29.4 | 12.3 | 2.5 |
| Jun | 30° / 25° | 279 | 28.7 | 12.4 | 2.7 |
| Jul | 29° / 25° | 245 | 29.2 | 12.4 | 2.9 |
| Aug | 29° / 25° | 219 | 29.1 | 12.2 | 2.9 |
| Sep | 29° / 25° | 247 | 27.8 | 12 | 2.9 |
| Oct | 30° / 24° | 359 | 28.2 | 11.8 | 2.9 |
| Nov | 30° / 24° | 337 | 23.9 | 11.7 | 3.2 |
| Dec | 30° / 23° | 178 | 16.1 | 11.6 | 4.1 |
Cloud cover in December
The sky is clear or mostly clear about 19% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 66%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 25 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 30 | 30 | 31 | 32 | 34 | 34 | 36 | 37 | 38 | 40 | 41 | 43 | 43 | 46 | 46 | 46 | 47 |
| Cloudier (%) | 75 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 71 | 70 | 70 | 70 | 70 | 69 | 68 | 66 | 66 | 64 | 63 | 62 | 60 | 59 | 57 | 57 | 54 | 54 | 54 | 53 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 25 | 75 |
| 2 | 27 | 73 |
| 3 | 27 | 73 |
| 4 | 28 | 72 |
| 5 | 28 | 72 |
| 6 | 28 | 72 |
| 7 | 28 | 72 |
| 8 | 28 | 72 |
| 9 | 28 | 72 |
| 10 | 28 | 72 |
| 11 | 28 | 72 |
| 12 | 29 | 71 |
| 13 | 30 | 70 |
| 14 | 30 | 70 |
| 15 | 30 | 70 |
| 16 | 30 | 70 |
| 17 | 31 | 69 |
| 18 | 32 | 68 |
| 19 | 34 | 66 |
| 20 | 34 | 66 |
| 21 | 36 | 64 |
| 22 | 37 | 63 |
| 23 | 38 | 62 |
| 24 | 40 | 60 |
| 25 | 41 | 59 |
| 26 | 43 | 57 |
| 27 | 43 | 57 |
| 28 | 46 | 54 |
| 29 | 46 | 54 |
| 30 | 46 | 54 |
| 31 | 47 | 53 |
Chance of precipitation in December
Sri Jayewardenepura Kotte gets around 178 mm of rain over 16.1 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 52% and peaks near 63% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 63 | 61 | 60 | 59 | 58 | 58 | 58 | 57 | 57 | 57 | 57 | 56 | 56 | 56 | 55 | 55 | 54 | 53 | 52 | 51 | 50 | 49 | 47 | 45 | 44 | 42 | 40 | 39 | 38 | 37 | 36 |
| Rain chance (%) | |
|---|---|
| 1 | 63 |
| 2 | 61 |
| 3 | 60 |
| 4 | 59 |
| 5 | 58 |
| 6 | 58 |
| 7 | 58 |
| 8 | 57 |
| 9 | 57 |
| 10 | 57 |
| 11 | 57 |
| 12 | 56 |
| 13 | 56 |
| 14 | 56 |
| 15 | 55 |
| 16 | 55 |
| 17 | 54 |
| 18 | 53 |
| 19 | 52 |
| 20 | 51 |
| 21 | 50 |
| 22 | 49 |
| 23 | 47 |
| 24 | 45 |
| 25 | 44 |
| 26 | 42 |
| 27 | 40 |
| 28 | 39 |
| 29 | 38 |
| 30 | 37 |
| 31 | 36 |
Humidity in December
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 68% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Humid (%) | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 5 |
| Muggy (%) | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 16 | 17 | 18 | 20 | 21 | 22 | 24 | 25 | 26 | 27 | 28 | 29 |
| Oppressive (%) | 70 | 69 | 70 | 69 | 68 | 67 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 69 | 69 | 68 | 69 | 69 | 70 | 70 | 70 | 70 | 68 | 68 | 67 | 65 | 65 | 63 | 63 | 61 | 61 |
| Miserable (%) | 22 | 22 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 5 |
| Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|
| 1 | 0 | 8 | 70 | 22 |
| 2 | 0 | 9 | 69 | 22 |
| 3 | 0 | 9 | 70 | 21 |
| 4 | 0 | 10 | 69 | 21 |
| 5 | 1 | 11 | 68 | 20 |
| 6 | 1 | 12 | 67 | 20 |
| 7 | 1 | 12 | 67 | 20 |
| 8 | 1 | 12 | 67 | 20 |
| 9 | 1 | 12 | 67 | 20 |
| 10 | 1 | 13 | 67 | 19 |
| 11 | 1 | 13 | 67 | 19 |
| 12 | 1 | 13 | 68 | 18 |
| 13 | 1 | 13 | 68 | 18 |
| 14 | 1 | 13 | 69 | 17 |
| 15 | 1 | 13 | 69 | 17 |
| 16 | 2 | 14 | 68 | 16 |
| 17 | 2 | 14 | 69 | 15 |
| 18 | 2 | 15 | 69 | 14 |
| 19 | 2 | 15 | 70 | 13 |
| 20 | 2 | 16 | 70 | 12 |
| 21 | 2 | 17 | 70 | 11 |
| 22 | 2 | 18 | 70 | 10 |
| 23 | 2 | 20 | 68 | 10 |
| 24 | 2 | 21 | 68 | 9 |
| 25 | 3 | 22 | 67 | 8 |
| 26 | 3 | 24 | 65 | 8 |
| 27 | 3 | 25 | 65 | 7 |
| 28 | 4 | 26 | 63 | 7 |
| 29 | 4 | 27 | 63 | 6 |
| 30 | 5 | 28 | 61 | 6 |
| 31 | 5 | 29 | 61 | 5 |
Wind in December
Winds average 9 km/h in December.
Across December, daily wind ranges from about 7 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 10 | calm |
| 24 | 10 | calm |
| 25 | 10 | calm |
| 26 | 10 | calm |
| 27 | 10 | calm |
| 28 | 10 | calm |
| 29 | 10 | calm |
| 30 | 10 | calm |
| 31 | 10 | calm |
Sunrise & sunset in December
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 6:02 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 | 11.6 |
| Sunrise (AM) | 6:11 | 6:12 | 6:12 | 6:13 | 6:13 | 6:14 | 6:14 | 6:15 | 6:15 | 6:16 | 6:16 | 6:17 | 6:17 | 6:17 | 6:18 | 6:18 | 6:19 | 6:19 | 6:20 | 6:20 | 6:21 | 6:21 | 6:22 | 6:22 | 6:23 | 6:23 | 6:24 | 6:24 | 6:25 | 6:25 | 6:25 |
| Sunset (PM) | 5:49 | 5:49 | 5:50 | 5:50 | 5:50 | 5:51 | 5:51 | 5:51 | 5:52 | 5:52 | 5:53 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:55 | 5:56 | 5:56 | 5:57 | 5:57 | 5:58 | 5:58 | 5:59 | 5:59 | 6:00 | 6:00 | 6:01 | 6:01 | 6:02 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 6:11 | 5:49 |
| 2 | 11.6 | 6:12 | 5:49 |
| 3 | 11.6 | 6:12 | 5:50 |
| 4 | 11.6 | 6:13 | 5:50 |
| 5 | 11.6 | 6:13 | 5:50 |
| 6 | 11.6 | 6:14 | 5:51 |
| 7 | 11.6 | 6:14 | 5:51 |
| 8 | 11.6 | 6:15 | 5:51 |
| 9 | 11.6 | 6:15 | 5:52 |
| 10 | 11.6 | 6:16 | 5:52 |
| 11 | 11.6 | 6:16 | 5:53 |
| 12 | 11.6 | 6:17 | 5:53 |
| 13 | 11.6 | 6:17 | 5:53 |
| 14 | 11.6 | 6:17 | 5:54 |
| 15 | 11.6 | 6:18 | 5:54 |
| 16 | 11.6 | 6:18 | 5:55 |
| 17 | 11.6 | 6:19 | 5:55 |
| 18 | 11.6 | 6:19 | 5:55 |
| 19 | 11.6 | 6:20 | 5:56 |
| 20 | 11.6 | 6:20 | 5:56 |
| 21 | 11.6 | 6:21 | 5:57 |
| 22 | 11.6 | 6:21 | 5:57 |
| 23 | 11.6 | 6:22 | 5:58 |
| 24 | 11.6 | 6:22 | 5:58 |
| 25 | 11.6 | 6:23 | 5:59 |
| 26 | 11.6 | 6:23 | 5:59 |
| 27 | 11.6 | 6:24 | 6:00 |
| 28 | 11.6 | 6:24 | 6:00 |
| 29 | 11.6 | 6:25 | 6:01 |
| 30 | 11.6 | 6:25 | 6:01 |
| 31 | 11.6 | 6:25 | 6:02 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 4.61 kWh/m².
For context, solar energy here swings from a low near 4.43 kWh/m² to a high of 6.15 kWh/m² in March across the year — December's 4.61 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.5 | Bright |
| 2 | 4.5 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.5 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.5 | Bright |
| 8 | 4.6 | Bright |
| 9 | 4.5 | Bright |
| 10 | 4.5 | Bright |
| 11 | 4.5 | Bright |
| 12 | 4.5 | Bright |
| 13 | 4.5 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.5 | Bright |
| 16 | 4.5 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.5 | Bright |
| 19 | 4.6 | Bright |
| 20 | 4.6 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.6 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.8 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.9 | Bright |
| 31 | 4.9 | Bright |
Hazard calendar for Sri Jayewardenepura Kotte
In December, Sri Jayewardenepura Kotte sits inside its cyclone season. The full year is below, with each hazard's peak months called out.
Sri Jayewardenepura Kotte sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Is December a good time to visit Sri Jayewardenepura Kotte?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Sri Jayewardenepura Kotte for sightseeing.
What to pack for Sri Jayewardenepura Kotte in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Sri Jayewardenepura Kotte sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.
Sea temperature near Sri Jayewardenepura Kotte 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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 29 | 30 | 29 | 28 | 28 | 27 | 28 | 28 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 29 | Tropical |
| Jun | 28 | Tropical |
| Jul | 28 | Warm |
| Aug | 27 | Warm |
| Sep | 28 | Warm |
| Oct | 28 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Tropical |
UV index in Sri Jayewardenepura Kotte in December
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 Sri Jayewardenepura Kotte 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 12 | 12 | 12 | 12 | 11 | 11 | 13 | 13 | 12 | 10 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Extreme |
| Feb | 12 | Extreme |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Extreme |
| Dec | 10 | Very high |
Air quality in Sri Jayewardenepura Kotte in December
Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.
Air quality in Sri Jayewardenepura Kotte 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 84 | 78 | 73 | 62 | 44 | 31 | 29 | 30 | 35 | 52 | 74 | 81 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Poor | Poor | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 84 | Unhealthy |
| Feb | 78 | Unhealthy |
| Mar | 73 | Unhealthy |
| Apr | 62 | Unhealthy |
| May | 44 | Poor |
| Jun | 31 | Moderate |
| Jul | 29 | Moderate |
| Aug | 30 | Moderate |
| Sep | 35 | Poor |
| Oct | 52 | Poor |
| Nov | 74 | Unhealthy |
| Dec | 81 | Unhealthy |
Where is Sri Jayewardenepura Kotte?
Sri Jayewardenepura Kotte sits at 6.9°N, 79.9°E, 27 m above sea level, in Sri Lanka. The nearest listed city is Pita Kotte, 1.0 km away.
Topography around Sri Jayewardenepura Kotte
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sri Jayewardenepura Kotte.
Within 3 km, the terrain around Sri Jayewardenepura Kotte has only modest variations in elevation — a maximum elevation change of 34 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 135 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,060 m.
The land around Sri Jayewardenepura Kotte is covered by artificial surfaces (63%) and trees (28%) within 3 km, trees (38%), water (32%) and artificial surfaces (25%) within 16 km, and trees (61%) and water (35%) within 80 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
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 Sri Jayewardenepura Kotte (6.883°, 79.9071°, elevation 27 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).