Chilaw in september: average Weather, Temperature and Climate
Weather in Chilaw in september 2025
The weather in Chilaw in september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather UV index: 7
Weather at 6am
83°F
Moderate rain at times
61% of time
17%
12%
10%
Weather at 12pm
86°F
Moderate rain at times
53% of time
20%
20%
7%
Weather at 6pm
81°F
Moderate rain at times
47% of time
22%
13%
11%
Weather at 3am
79°F
45%
23%
23%
10%
Evolution of daily average temperature and precipitation in Chilaw in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Chilaw in september.
The climate of Chilaw in september is tolerable
In september in Chilaw, the climate is wet (with 14.1in of rainfall over 17 days). This is better than the previous month since in august it receives an average of 17.6in of precipitation over 20 days.
The climate quite good around this city the month of september. Temperatures are up to 86°F. The seasonal minimum is 83°F. Thus, the mean temperature average on this month of september in Chilaw is 85°F. These temperatures are far removed from those records observed in Chilaw in the month of september with a maximum record of 92°F in 2019 and a minimum record of 76°F in 2009. You You can hope to have about 16 days with temperatures up to 86°F, or 53 of time.
On this month of september, day length in Chilaw is generally 12:10. The sun rises at 06:01 and sets at 18:11.
With a correct climate, the month of september is okay (but not the best) to go in this city in Sri Lanka.
September: another location in Sri Lanka?
If you want to go to Sri Lanka in september, there are destinations with better weather than Chilaw:
In september, Anuradhapura, Jaffna, Kandy, Trincomalee, Batticaloa and Dambulla have good weather.
Seasonal average climate and temperature of Chilaw in september
Check below seasonal norms These datas are compiled from the weather statements of the past years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 83°F | ||||
| Highest record temperature | 92°F (2019) | ||||
| Lowest record temperature | 76°F (2009) | ||||
| Number of days at +86°F | 16 day(s) (53%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 82°F | ||||
| Lowest sea temperature | 80°F | ||||
| Highest sea temperature | 85°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 83°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 14.1in | ||||
| Number of days with rainfall | 17 day(s) (55%) | ||||
| Record daily rainfall | 3.3in (2011) | ||||
| Other climate data | |||||
| Humidity | 82% | ||||
| Visibility | 9.04km | ||||
| Cloud cover | 55% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:01 | ||||
| Time of sunset | 18:11 | ||||
| Length of day | 12:10 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Chilaw in september 2024:
79°F to 83°F
79°F to 85°F
79°F to 83°F
79°F to 85°F
81°F to 85°F
81°F to 83°F
79°F to 85°F
79°F to 83°F
79°F to 85°F
79°F to 85°F
79°F to 83°F
79°F to 85°F
81°F to 86°F
79°F to 85°F
81°F to 83°F
81°F to 85°F
79°F to 85°F
79°F to 85°F
79°F to 85°F
79°F to 85°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 85°F
79°F to 85°F
79°F to 86°F
79°F to 88°F
77°F to 83°F
Map: other cities in Sri Lanka in september
Cities near Chilaw:
| Kuliyapitiya in september | tolerable weather |
| Negombo in september | tolerable weather |
| Puttalam in september | good weather |
| Kurunegala in september | good weather |
| Colombo in september | bad weather |
| Kalpitiya in september | good weather |
| Dehiwala-Mount Lavinia in september | tolerable weather |
| Matale in september | good weather |
| Panadura in september | bad weather |
| Gampola in september | good weather |
| Kandy in september | good weather |
| Wilpattu National Park in september | good weather |
Click over cities on the map for information about the weather in september.
Chilaw
perfect weather
good
tolerable
bad
very bad
Weather data for Chilaw in september:
Weather data for Chilaw for september are derived from an average of the weather forecast since 2009 in Chilaw. There is a margin of error and these forecasts are to be considered as general information only. The weather in Chilaw can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Chilaw.