Negombo in september: average Weather, Temperature and Climate
Weather in Negombo in september 2025
The weather in Negombo in the month of september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on 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 Negombo in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Negombo in september.
The climate of Negombo in september is tolerable
In september in Negombo, the climate is wet (with 14.1in of precipitation over 17 days). It should be noted an improvement from the previous month since in august it receives an average of 17.6in of rainfall over 20 days.
The climate pleasant in that locality september. The high seasonal norm is 86°F. In the morning the temperature drops to 83°F. Thus, the mean temperature average on this month of september in Negombo is 85°F. These temperatures are far removed from those records observed in Negombo 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.
In september in Negombo, the days on average last 12:09. The sun rises at 06:01 and sunset is at 18:10.
With a correct climate, september is okay (but not the best) to go in this locality.
September: another location in Sri Lanka?
If you want to go to Sri Lanka in september, there are destinations with better weather than Negombo:
In september, Anuradhapura, Jaffna, Kandy, Trincomalee, Batticaloa and Dambulla have good weather.
Seasonal average climate and temperature of Negombo in september
Check below seasonal norms These datas are generated from the weather statements of the past years of the month 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 | 84°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 | 18:10 | ||||
| Length of day | 12:09 | ||||
| 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 Negombo in september 2024:
79°F to 83°F
81°F to 85°F
79°F to 81°F
79°F to 85°F
81°F to 85°F
81°F to 85°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
81°F to 85°F
81°F to 86°F
81°F to 85°F
81°F to 85°F
81°F to 85°F
81°F to 85°F
79°F to 85°F
81°F to 85°F
79°F to 85°F
79°F to 85°F
79°F to 85°F
81°F to 83°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 86°F
79°F to 83°F
Map: other cities in Sri Lanka in september
Cities near Negombo:
| Colombo in september | bad weather |
| Kuliyapitiya in september | tolerable weather |
| Chilaw in september | tolerable weather |
| Dehiwala-Mount Lavinia in september | tolerable weather |
| Panadura in september | bad weather |
| Kurunegala in september | good weather |
| Kalutara in september | bad weather |
| Gampola in september | good weather |
| Adam’s peak in september | tolerable weather |
| Kandy in september | good weather |
| Bentota in september | bad weather |
| Hatton in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Negombo
perfect weather
good
tolerable
bad
very bad
Weather data for Negombo in september:
Weather data for Negombo for september are derived from an average of the weather forecast since 2009 in Negombo. There is a margin of error and these forecasts are to be considered as general information only. The weather in Negombo 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 Negombo.