Negombo weather in September 2025
Negombo weather in September 2025
Day
31 °C
Night
24 °C
Sea
28 °C
Precipitation
150 mm
in month
Rainy days
14 days
in month
Daylight
12 hours
average
Sunshine
6 hours
average
Humidity
78 %
Day
31 °C
Night
24 °C
Sea
28 °C
Precipitation
150 mm
in month
Rainy days
14 days
in month
Daylight
12 hours
average
Sunshine
6 hours
average
Humidity
78 %
Overview: Negombo
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We make the most from 40 years of historical weather data to predict the best weather conditions.Weather overview for Negombo
Weather overview
In Negombo in September, the average air temperature ranges from 31 °C (88 °F) during the day to 24 °C (76 °F) at night. There are 14 days of rain on average, where the rainfall is 150 mm (5.92 in).
Is September a good month to visit Negombo?
September is one of the best months to visit Negombo. The daily temperatures in this month reach pleasant 31 °C (88 °F). The seawater temperature reaches ideal 28 °C (82 °F). At night, temperatures hover around a pleasant 24 °C (76 °F).
What is the sea temperature in September in Negombo?
The temperature of the sea in September in Negombo is 28 °C (82 °F). Seems like an ideal temperature for swimming, you can stay in the sea for a long time and enjoy it as well.
What is the temperature in Negombo during the day in September?
In Negombo in September, the average daily temperatures will be 31 °C (88 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.How heavy is the precipitation in Negombo in September?
In September in Negombo, there is 150 mm (5.92 in) rainfall, which means on average 5 mm (0.20 in) rainfall per day.
How many days of precipitation on average can I expect in September in Negombo?
There are 14 days, which are rainy in Negombo in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.2 days of the week, or in general - 46 % days.
What is the night temperature in September in Negombo?
The average night temperature in Negombo in September is 24 °C (76 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.
What level of humidity is to expect in Negombo in September?
Humidity in Negombo in September is 78 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
We make the most from 40 years of historical weather data to predict the best weather conditions.How many hours of sun to expect in Negombo in September?
In Negombo in September, you can expect around 6 hours of sunshine.
How long is the day (from dawn till dusk) in Negombo in September?
The length of daylight in September in Negombo is 12 hours.
Is Negombo rainier in September than in October?
No, September in Negombo is not a rainier month than October.
Is it hot in Negombo in September?
In Negombo in September, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How windy is it in September in Negombo?
In Negombo in September, there will be an average wind scale of 3. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.