Ratnapura weather in October
In October, Ratnapura sees average daytime highs of 27°C and overnight lows near 21°C, with 497 mm of rain across 27.5 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 3% of the time in October, and the air most often feels oppressive.
Daylight stretches from about 11 h 54 min at the start of October to 11 h 48 min by month's end. Set against the rest of the year, October is Ratnapura's 8th-clearest and 6th-windiest month. For the whole year in context, see Ratnapura's year-round climate.
- Daytime high
- 27°
- 8th warmest
- Overnight low
- 21°
- 6th coldest
- Rainfall
- 497 mm
- 27.5 wet days
- Daylight
- 11 h 54 min
- 5:58 AM – 5:49 PM
- Cloud cover
- 84%
- 8th clearest
- Wind
- 5 km/h
- 6th windiest
- Solar energy
- 4.6 kWh/m²
- Travel score
- 3.8
- 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 October
Day-to-day highs hold fairly steady near 27°C through the month.
A typical October day in Ratnapura reaches about 27°C in the afternoon and slips back to 21°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, October runs on par with September and on par with November.
| 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) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg low (°C) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 26 | 21 |
| 2 | 26 | 21 |
| 3 | 26 | 21 |
| 4 | 26 | 21 |
| 5 | 26 | 21 |
| 6 | 26 | 21 |
| 7 | 26 | 21 |
| 8 | 26 | 21 |
| 9 | 26 | 21 |
| 10 | 26 | 21 |
| 11 | 27 | 21 |
| 12 | 27 | 21 |
| 13 | 27 | 21 |
| 14 | 27 | 21 |
| 15 | 27 | 21 |
| 16 | 27 | 21 |
| 17 | 27 | 21 |
| 18 | 27 | 21 |
| 19 | 27 | 21 |
| 20 | 27 | 21 |
| 21 | 27 | 21 |
| 22 | 27 | 21 |
| 23 | 27 | 21 |
| 24 | 27 | 21 |
| 25 | 27 | 21 |
| 26 | 27 | 21 |
| 27 | 27 | 21 |
| 28 | 27 | 21 |
| 29 | 27 | 21 |
| 30 | 27 | 21 |
| 31 | 27 | 21 |
Ratnapura weather by month
How October compares with the rest of the year at a glance. October is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 27° / 19° | 308 | 22.8 | 11.7 | 4.5 |
| Feb | 28° / 19° | 279 | 20.5 | 11.8 | 4.6 |
| Mar | 28° / 20° | 309 | 27.4 | 12 | 3.7 |
| Apr | 28° / 21° | 468 | 29 | 12.1 | 3.3 |
| May | 27° / 22° | 310 | 29.6 | 12.3 | 3.4 |
| Jun | 26° / 22° | 267 | 27.9 | 12.4 | 3.6 |
| Jul | 26° / 21° | 246 | 28.5 | 12.3 | 3.7 |
| Aug | 26° / 21° | 228 | 28.3 | 12.2 | 3.7 |
| Sep | 26° / 21° | 246 | 26 | 12 | 3.9 |
| Oct | 27° / 21° | 497 | 27.5 | 11.9 | 3.8 |
| Nov | 27° / 20° | 661 | 26.9 | 11.7 | 3.8 |
| Dec | 27° / 20° | 515 | 26.1 | 11.6 | 4.0 |
Cloud cover in October
The sky is clear or mostly clear about 3% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 8% of October, with mostly cloudy or overcast conditions the remaining 88%.
| 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 (%) | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 11 | 10 |
| Cloudier (%) | 89 | 88 | 87 | 87 | 87 | 87 | 87 | 87 | 87 | 88 | 89 | 89 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 89 | 89 | 89 | 89 | 89 | 90 | 89 | 89 | 89 | 89 | 89 | 90 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 11 | 89 |
| 2 | 12 | 88 |
| 3 | 13 | 87 |
| 4 | 13 | 87 |
| 5 | 13 | 87 |
| 6 | 13 | 87 |
| 7 | 13 | 87 |
| 8 | 13 | 87 |
| 9 | 13 | 87 |
| 10 | 12 | 88 |
| 11 | 11 | 89 |
| 12 | 11 | 89 |
| 13 | 11 | 89 |
| 14 | 11 | 89 |
| 15 | 11 | 89 |
| 16 | 10 | 90 |
| 17 | 10 | 90 |
| 18 | 10 | 90 |
| 19 | 10 | 90 |
| 20 | 11 | 89 |
| 21 | 11 | 89 |
| 22 | 11 | 89 |
| 23 | 11 | 89 |
| 24 | 11 | 89 |
| 25 | 10 | 90 |
| 26 | 11 | 89 |
| 27 | 11 | 89 |
| 28 | 11 | 89 |
| 29 | 11 | 89 |
| 30 | 11 | 89 |
| 31 | 10 | 90 |
Chance of precipitation in October
Ratnapura gets around 497 mm of rain over 27.5 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 89% and peaks near 89% on the wettest days.
| 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 (%) | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 |
| Rain chance (%) | |
|---|---|
| 1 | 88 |
| 2 | 88 |
| 3 | 88 |
| 4 | 88 |
| 5 | 88 |
| 6 | 88 |
| 7 | 88 |
| 8 | 88 |
| 9 | 88 |
| 10 | 88 |
| 11 | 88 |
| 12 | 88 |
| 13 | 88 |
| 14 | 88 |
| 15 | 89 |
| 16 | 89 |
| 17 | 89 |
| 18 | 89 |
| 19 | 89 |
| 20 | 89 |
| 21 | 89 |
| 22 | 89 |
| 23 | 89 |
| 24 | 89 |
| 25 | 89 |
| 26 | 89 |
| 27 | 89 |
| 28 | 89 |
| 29 | 89 |
| 30 | 89 |
| 31 | 89 |
Humidity in October
Most of October feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the oppressive band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 100% 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Muggy (%) | 46 | 46 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 43 | 43 | 42 | 42 | 42 | 41 | 41 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 40 |
| Oppressive (%) | 54 | 54 | 54 | 54 | 55 | 55 | 55 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 59 | 59 | 60 | 60 | 61 | 61 | 61 | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 59 |
| Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|
| 1 | 0 | 46 | 54 |
| 2 | 0 | 46 | 54 |
| 3 | 0 | 46 | 54 |
| 4 | 0 | 46 | 54 |
| 5 | 0 | 45 | 55 |
| 6 | 0 | 45 | 55 |
| 7 | 0 | 45 | 55 |
| 8 | 0 | 44 | 56 |
| 9 | 0 | 44 | 56 |
| 10 | 0 | 43 | 57 |
| 11 | 0 | 43 | 57 |
| 12 | 0 | 42 | 58 |
| 13 | 0 | 42 | 58 |
| 14 | 0 | 42 | 58 |
| 15 | 0 | 41 | 59 |
| 16 | 0 | 41 | 59 |
| 17 | 0 | 40 | 60 |
| 18 | 0 | 40 | 60 |
| 19 | 0 | 39 | 61 |
| 20 | 0 | 39 | 61 |
| 21 | 0 | 39 | 61 |
| 22 | 0 | 39 | 61 |
| 23 | 1 | 39 | 60 |
| 24 | 1 | 39 | 60 |
| 25 | 1 | 39 | 60 |
| 26 | 1 | 39 | 60 |
| 27 | 1 | 39 | 60 |
| 28 | 1 | 39 | 60 |
| 29 | 1 | 39 | 60 |
| 30 | 1 | 39 | 60 |
| 31 | 1 | 40 | 59 |
Wind in October
Winds average 5 km/h in October.
Across October, daily wind ranges from about 4 km/h on the calmest days to 5 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) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| 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 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 4 | calm |
| 24 | 4 | calm |
| 25 | 4 | calm |
| 26 | 4 | calm |
| 27 | 4 | calm |
| 28 | 4 | calm |
| 29 | 4 | calm |
| 30 | 4 | calm |
| 31 | 4 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 54 min at the start of October to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 6 minutes over October. Sunrise moves from 5:59 AM to 5:59 AM, and sunset from 5:56 PM to 5:45 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) | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 |
| Sunrise (AM) | 5:59 | 5:59 | 5:59 | 5:59 | 5:59 | 5:59 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 5:59 | 5:59 |
| Sunset (PM) | 5:56 | 5:55 | 5:55 | 5:54 | 5:54 | 5:53 | 5:53 | 5:52 | 5:52 | 5:51 | 5:51 | 5:50 | 5:50 | 5:50 | 5:49 | 5:49 | 5:49 | 5:48 | 5:48 | 5:48 | 5:47 | 5:47 | 5:47 | 5:46 | 5:46 | 5:46 | 5:46 | 5:45 | 5:45 | 5:45 | 5:45 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.9 | 5:59 | 5:56 |
| 2 | 11.9 | 5:59 | 5:55 |
| 3 | 11.9 | 5:59 | 5:55 |
| 4 | 11.9 | 5:59 | 5:54 |
| 5 | 11.9 | 5:59 | 5:54 |
| 6 | 11.9 | 5:59 | 5:53 |
| 7 | 11.9 | 5:58 | 5:53 |
| 8 | 11.9 | 5:58 | 5:52 |
| 9 | 11.9 | 5:58 | 5:52 |
| 10 | 11.9 | 5:58 | 5:51 |
| 11 | 11.9 | 5:58 | 5:51 |
| 12 | 11.9 | 5:58 | 5:50 |
| 13 | 11.9 | 5:58 | 5:50 |
| 14 | 11.9 | 5:58 | 5:50 |
| 15 | 11.9 | 5:58 | 5:49 |
| 16 | 11.9 | 5:58 | 5:49 |
| 17 | 11.8 | 5:58 | 5:49 |
| 18 | 11.8 | 5:58 | 5:48 |
| 19 | 11.8 | 5:58 | 5:48 |
| 20 | 11.8 | 5:58 | 5:48 |
| 21 | 11.8 | 5:58 | 5:47 |
| 22 | 11.8 | 5:58 | 5:47 |
| 23 | 11.8 | 5:58 | 5:47 |
| 24 | 11.8 | 5:58 | 5:46 |
| 25 | 11.8 | 5:58 | 5:46 |
| 26 | 11.8 | 5:58 | 5:46 |
| 27 | 11.8 | 5:58 | 5:46 |
| 28 | 11.8 | 5:59 | 5:45 |
| 29 | 11.8 | 5:59 | 5:45 |
| 30 | 11.8 | 5:59 | 5:45 |
| 31 | 11.8 | 5:59 | 5:45 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 4.6 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 — October's 4.6 kWh/m² sits near the bottom.
| 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) | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.4 | 4.3 | 4.3 | 4.3 |
| 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 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.7 | Bright |
| 12 | 4.7 | Bright |
| 13 | 4.7 | Bright |
| 14 | 4.7 | Bright |
| 15 | 4.6 | Bright |
| 16 | 4.6 | Bright |
| 17 | 4.6 | Bright |
| 18 | 4.6 | Bright |
| 19 | 4.5 | Bright |
| 20 | 4.5 | Bright |
| 21 | 4.5 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.3 | Bright |
| 30 | 4.3 | Bright |
| 31 | 4.3 | Bright |
Hazard calendar for Ratnapura
In October, 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.
Is October a good time to visit Ratnapura?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a weaker month for outdoor sightseeing in Ratnapura.
What to pack for Ratnapura in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Ratnapura sees daytime highs around 27°C and nights near 21°C. Pack rain gear. Worth having: light clothes and sun protection. About 28 days see rain.
Sea temperature near Ratnapura in October
The nearest coast averages about 28°C in October — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 29 | 30 | 29 | 28 | 28 | 28 | 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 | 28 | Warm |
| Sep | 28 | Warm |
| Oct | 28 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Tropical |
UV index in Ratnapura in October
Clear-sky midday UV in October peaks around 13 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 14 | 13 | 14 | 13 | 11 | 12 | 13 | 13 | 13 | 11 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 14 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 11 | Extreme |
| Dec | 10 | Extreme |
Air quality in Ratnapura in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October 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).
| 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 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.
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.
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 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).