Sri Lanka climate by month
8-year averages · when to visit
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Colombo |
30° |
31° |
31° |
31° |
30° |
29° |
29° |
28° |
29° |
29° |
29° |
29° |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Colombo |
14 |
11 |
18 |
24 |
30 |
29 |
27 |
28 |
28 |
29 |
25 |
20 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|
| Colombo |
29° |
29° |
30° |
31° |
31° |
29° |
29° |
29° |
29° |
29° |
29° |
29° |
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
Colombo climate in September
8-year averages · when to visit
Best months: January–December · September: Good
|
August |
September |
October |
| Average temperature |
▼ 27°C |
26°C |
→ 26°C |
| Typical high |
▲ 28°C |
29°C |
→ 29°C |
| Typical low |
→ 25°C |
25°C |
▼ 24°C |
| Water temperature |
▲ 28.7°C |
29.0°C |
▲ 29.1°C |
| Precipitation |
▲ 247 mm |
309 mm |
▲ 367 mm |
| Wet days |
→ 28 d |
28 d |
▲ 29 d |
| Humidity |
→ 84% |
84% |
▲ 85% |
| Sunshine per day |
▼ 9.6 h |
8.8 h |
▼ 8.0 h |
| Cloud cover |
▲ 23% |
28% |
▲ 33% |
| Midday UV |
→ 12 |
12 |
▼ 11 |
| Daylight |
12:20 |
12:09 |
11:58 |
| Our take |
Good
|
Good
|
Good
|
September temperatures day by day daily mean + smoothed trend · °C
September precipitation day by day mm
September UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
More destinations in Asia
Sri Lanka · 9 weather points · Climate reference: Colombo (6.93°N, 79.86°E) · Asia/Colombo