Negombo weather in August
In August, Negombo sees average daytime highs of 28°C and overnight lows near 26°C, with 164 mm of rain across 23.9 wet days and about 12.2 hours of daylight. It is the 12th-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 6% of the time in August, and the air most often feels miserable.
Daylight stretches from about 12 h 18 min at the start of August to 12 h 06 min by month's end. Set against the rest of the year, August is Negombo's 10th-clearest and 3rd-windiest month. For the whole year in context, see Negombo's year-round climate.
- Daytime high
- 28°
- 12th warmest
- Overnight low
- 26°
- 8th coldest
- Rainfall
- 164 mm
- 23.9 wet days
- Daylight
- 12 h 12 min
- 6:08 AM – 6:22 PM
- Cloud cover
- 79%
- 10th clearest
- Wind
- 20 km/h
- 3rd windiest
- Solar energy
- 5.36 kWh/m²
- Travel score
- 3.9
- out of 10
Negombo is city in Sri Lanka.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 28°C through the month.
A typical August day in Negombo reaches about 28°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 27°C and 29°C. Set against its neighbours, August runs on par with July and on par with September.
| 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) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 28 | 26 |
| 2 | 28 | 26 |
| 3 | 28 | 26 |
| 4 | 28 | 26 |
| 5 | 28 | 26 |
| 6 | 28 | 26 |
| 7 | 28 | 26 |
| 8 | 28 | 26 |
| 9 | 28 | 26 |
| 10 | 28 | 26 |
| 11 | 28 | 26 |
| 12 | 28 | 26 |
| 13 | 28 | 26 |
| 14 | 28 | 26 |
| 15 | 28 | 26 |
| 16 | 28 | 26 |
| 17 | 28 | 26 |
| 18 | 28 | 26 |
| 19 | 28 | 26 |
| 20 | 28 | 26 |
| 21 | 28 | 26 |
| 22 | 28 | 26 |
| 23 | 28 | 26 |
| 24 | 28 | 26 |
| 25 | 28 | 26 |
| 26 | 28 | 26 |
| 27 | 28 | 26 |
| 28 | 28 | 26 |
| 29 | 28 | 26 |
| 30 | 28 | 26 |
| 31 | 28 | 26 |
How August really feels in Negombo
Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Negombo weather by month
How August compares with the rest of the year at a glance. August is the 12th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 24° | 38 | 6.4 | 11.6 | 5.8 |
| Feb | 30° / 25° | 39 | 6.5 | 11.8 | 5.5 |
| Mar | 30° / 26° | 76 | 15.8 | 12 | 4.4 |
| Apr | 30° / 27° | 163 | 26 | 12.2 | 3.2 |
| May | 29° / 27° | 254 | 28.6 | 12.3 | 3.0 |
| Jun | 29° / 27° | 224 | 27 | 12.4 | 3.2 |
| Jul | 28° / 26° | 176 | 24.6 | 12.4 | 3.7 |
| Aug | 28° / 26° | 164 | 23.9 | 12.2 | 3.9 |
| Sep | 28° / 26° | 215 | 25.3 | 12 | 3.6 |
| Oct | 28° / 26° | 314 | 26.4 | 11.8 | 3.5 |
| Nov | 29° / 25° | 272 | 22.4 | 11.7 | 3.8 |
| Dec | 29° / 25° | 137 | 14.1 | 11.6 | 5.0 |
Cloud cover in August
The sky is clear or mostly clear about 6% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 81%.
| 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 (%) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 |
| Cloudier (%) | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 81 | 81 | 81 | 81 | 81 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 19 | 81 |
| 2 | 19 | 81 |
| 3 | 19 | 81 |
| 4 | 19 | 81 |
| 5 | 19 | 81 |
| 6 | 19 | 81 |
| 7 | 19 | 81 |
| 8 | 19 | 81 |
| 9 | 19 | 81 |
| 10 | 19 | 81 |
| 11 | 19 | 81 |
| 12 | 19 | 81 |
| 13 | 18 | 82 |
| 14 | 18 | 82 |
| 15 | 18 | 82 |
| 16 | 18 | 82 |
| 17 | 18 | 82 |
| 18 | 18 | 82 |
| 19 | 18 | 82 |
| 20 | 18 | 82 |
| 21 | 18 | 82 |
| 22 | 18 | 82 |
| 23 | 18 | 82 |
| 24 | 18 | 82 |
| 25 | 18 | 82 |
| 26 | 18 | 82 |
| 27 | 19 | 81 |
| 28 | 19 | 81 |
| 29 | 19 | 81 |
| 30 | 19 | 81 |
| 31 | 19 | 81 |
Chance of precipitation in August
Negombo gets around 164 mm of rain over 23.9 wet days in August. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 77% and peaks near 80% 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 (%) | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 77 | 77 | 77 | 77 | 77 | 77 | 78 | 78 | 78 | 79 | 79 | 79 | 80 | 80 |
| Rain chance (%) | |
|---|---|
| 1 | 78 |
| 2 | 78 |
| 3 | 78 |
| 4 | 77 |
| 5 | 77 |
| 6 | 77 |
| 7 | 77 |
| 8 | 77 |
| 9 | 76 |
| 10 | 76 |
| 11 | 76 |
| 12 | 76 |
| 13 | 76 |
| 14 | 76 |
| 15 | 76 |
| 16 | 76 |
| 17 | 76 |
| 18 | 77 |
| 19 | 77 |
| 20 | 77 |
| 21 | 77 |
| 22 | 77 |
| 23 | 77 |
| 24 | 78 |
| 25 | 78 |
| 26 | 78 |
| 27 | 79 |
| 28 | 79 |
| 29 | 79 |
| 30 | 80 |
| 31 | 80 |
Humidity in August
Most of August feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the miserable band about 91% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oppressive (%) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 |
| Miserable (%) | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 91 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 92 | 91 | 91 | 91 | 90 | 90 | 90 | 90 | 89 | 89 | 89 | 88 | 88 |
| Oppressive (%) | Miserable (%) | |
|---|---|---|
| 1 | 9 | 91 |
| 2 | 9 | 91 |
| 3 | 9 | 91 |
| 4 | 9 | 91 |
| 5 | 9 | 91 |
| 6 | 9 | 91 |
| 7 | 9 | 91 |
| 8 | 9 | 91 |
| 9 | 8 | 92 |
| 10 | 8 | 92 |
| 11 | 8 | 92 |
| 12 | 8 | 92 |
| 13 | 8 | 92 |
| 14 | 8 | 92 |
| 15 | 8 | 92 |
| 16 | 8 | 92 |
| 17 | 8 | 92 |
| 18 | 8 | 92 |
| 19 | 8 | 92 |
| 20 | 9 | 91 |
| 21 | 9 | 91 |
| 22 | 9 | 91 |
| 23 | 10 | 90 |
| 24 | 10 | 90 |
| 25 | 10 | 90 |
| 26 | 10 | 90 |
| 27 | 11 | 89 |
| 28 | 11 | 89 |
| 29 | 11 | 89 |
| 30 | 12 | 88 |
| 31 | 12 | 88 |
Wind in August
Winds average 20 km/h in August.
Across August, daily wind ranges from about 19 km/h on the calmest days to 21 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) | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 |
| Feels | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 21 | breezy |
| 2 | 21 | breezy |
| 3 | 21 | breezy |
| 4 | 21 | breezy |
| 5 | 21 | breezy |
| 6 | 20 | breezy |
| 7 | 20 | breezy |
| 8 | 20 | breezy |
| 9 | 20 | breezy |
| 10 | 20 | breezy |
| 11 | 20 | breezy |
| 12 | 20 | breezy |
| 13 | 20 | breezy |
| 14 | 20 | breezy |
| 15 | 20 | breezy |
| 16 | 20 | light breeze |
| 17 | 20 | light breeze |
| 18 | 20 | light breeze |
| 19 | 20 | light breeze |
| 20 | 20 | light breeze |
| 21 | 20 | light breeze |
| 22 | 20 | light breeze |
| 23 | 20 | light breeze |
| 24 | 20 | light breeze |
| 25 | 20 | light breeze |
| 26 | 20 | light breeze |
| 27 | 20 | light breeze |
| 28 | 19 | light breeze |
| 29 | 19 | light breeze |
| 30 | 19 | light breeze |
| 31 | 19 | light breeze |
Sunrise & sunset in August
Daylight runs from about 12 h 18 min at the start of August to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over August. Sunrise moves from 6:07 AM to 6:06 AM, and sunset from 6:26 PM to 6:15 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) | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 |
| Sunrise (AM) | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:08 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:06 | 6:06 |
| Sunset (PM) | 6:26 | 6:26 | 6:26 | 6:26 | 6:25 | 6:25 | 6:25 | 6:25 | 6:24 | 6:24 | 6:24 | 6:23 | 6:23 | 6:23 | 6:22 | 6:22 | 6:22 | 6:21 | 6:21 | 6:20 | 6:20 | 6:19 | 6:19 | 6:19 | 6:18 | 6:18 | 6:17 | 6:17 | 6:16 | 6:16 | 6:15 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.3 | 6:07 | 6:26 |
| 2 | 12.3 | 6:07 | 6:26 |
| 3 | 12.3 | 6:07 | 6:26 |
| 4 | 12.3 | 6:07 | 6:26 |
| 5 | 12.3 | 6:07 | 6:25 |
| 6 | 12.3 | 6:08 | 6:25 |
| 7 | 12.3 | 6:08 | 6:25 |
| 8 | 12.3 | 6:08 | 6:25 |
| 9 | 12.3 | 6:08 | 6:24 |
| 10 | 12.3 | 6:08 | 6:24 |
| 11 | 12.3 | 6:08 | 6:24 |
| 12 | 12.3 | 6:08 | 6:23 |
| 13 | 12.3 | 6:08 | 6:23 |
| 14 | 12.2 | 6:08 | 6:23 |
| 15 | 12.2 | 6:08 | 6:22 |
| 16 | 12.2 | 6:08 | 6:22 |
| 17 | 12.2 | 6:08 | 6:22 |
| 18 | 12.2 | 6:08 | 6:21 |
| 19 | 12.2 | 6:07 | 6:21 |
| 20 | 12.2 | 6:07 | 6:20 |
| 21 | 12.2 | 6:07 | 6:20 |
| 22 | 12.2 | 6:07 | 6:19 |
| 23 | 12.2 | 6:07 | 6:19 |
| 24 | 12.2 | 6:07 | 6:19 |
| 25 | 12.2 | 6:07 | 6:18 |
| 26 | 12.2 | 6:07 | 6:18 |
| 27 | 12.2 | 6:07 | 6:17 |
| 28 | 12.2 | 6:07 | 6:17 |
| 29 | 12.2 | 6:07 | 6:16 |
| 30 | 12.2 | 6:06 | 6:16 |
| 31 | 12.1 | 6:06 | 6:15 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 5.36 kWh/m².
For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 6.43 kWh/m² in March across the year — August's 5.36 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) | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 | 5.3 |
| 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 | 5.3 | Bright |
| 2 | 5.3 | Bright |
| 3 | 5.3 | Bright |
| 4 | 5.3 | Bright |
| 5 | 5.3 | Bright |
| 6 | 5.3 | Bright |
| 7 | 5.3 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.4 | Bright |
| 10 | 5.4 | Bright |
| 11 | 5.4 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.4 | Bright |
| 17 | 5.4 | Bright |
| 18 | 5.4 | Bright |
| 19 | 5.4 | Bright |
| 20 | 5.4 | Bright |
| 21 | 5.4 | Bright |
| 22 | 5.4 | Bright |
| 23 | 5.4 | Bright |
| 24 | 5.3 | Bright |
| 25 | 5.3 | Bright |
| 26 | 5.3 | Bright |
| 27 | 5.3 | Bright |
| 28 | 5.3 | Bright |
| 29 | 5.3 | Bright |
| 30 | 5.3 | Bright |
| 31 | 5.3 | Bright |
Hazard calendar for Negombo
None of Negombo's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Negombo sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Is August a good time to visit Negombo?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a weaker month for outdoor sightseeing in Negombo.
What to pack for Negombo in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Negombo sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection and a windbreaker. About 24 days see rain.
Sea temperature near Negombo in August
The nearest coast averages about 27°C in August — 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 Negombo in August
Clear-sky midday UV in August 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 Negombo peaks around February 17 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) | 11 | 13 | 12 | 12 | 12 | 11 | 12 | 13 | 13 | 12 | 10 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 13 | Extreme |
| Mar | 12 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 12 | Extreme |
| Nov | 10 | Extreme |
| Dec | 10 | Very high |
Air quality in Negombo in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Negombo is worst in March — around 30 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (August, 17 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) | 23 | 23 | 30 | 28 | 24 | 18 | 17 | 17 | 17 | 19 | 24 | 23 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 23 | Moderate |
| Feb | 23 | Moderate |
| Mar | 30 | Moderate |
| Apr | 28 | Moderate |
| May | 24 | Moderate |
| Jun | 18 | Moderate |
| Jul | 17 | Moderate |
| Aug | 17 | Moderate |
| Sep | 17 | Moderate |
| Oct | 19 | Moderate |
| Nov | 24 | Moderate |
| Dec | 23 | Moderate |
Where is Negombo?
Negombo sits at 7.2°N, 79.8°E, 8 m above sea level, in Sri Lanka. The nearest listed city is Katunayaka, 7.0 km away.
Topography around Negombo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Negombo.
Within 3 km, the terrain around Negombo has only modest variations in elevation — a maximum elevation change of 13 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 69 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,554 m.
The land around Negombo is covered by water (52%) and artificial surfaces (28%) within 3 km, water (54%) and trees (37%) within 16 km, and trees (58%) and water (36%) 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 Negombo (7.2083°, 79.8358°, elevation 8 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).