Unawatuna weather in September 2025
Unawatuna weather in September 2025
Day
29 °C
Night
25 °C
Sea
28 °C
Precipitation
239 mm
in month
Rainy days
16 days
in month
Daylight
12 hours
average
Sunshine
6 hours
average
Humidity
80 %
Day
29 °C
Night
25 °C
Sea
28 °C
Precipitation
239 mm
in month
Rainy days
16 days
in month
Daylight
12 hours
average
Sunshine
6 hours
average
Humidity
80 %
Overview: Unawatuna
Travel information
Weather charts for Unawatuna
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.
Find more destinations like this
Destinations with similar weather to Unawatuna
Other destinations in Sri Lanka
Weather overview for Unawatuna
Weather overview
In Unawatuna in September, the average air temperature ranges from 29 °C (84 °F) during the day to 25 °C (76 °F) at night. There are 16 days of rain on average, where the rainfall is 239 mm (9.39 in).
Is September a good month to visit Unawatuna?
In September in Unawatuna, there are ideal conditions for a vacation. The temperature during the day will be nice 29 °C (84 °F). The seawater temperature reaches ideal 28 °C (82 °F). At night, temperatures hover around a pleasant 25 °C (76 °F).
What is the temperature in Unawatuna during the day in September?
The average daily temperature in Unawatuna in September is 29 °C (84 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
What is the sea temperature in September in Unawatuna?
The sea will reach 28 °C (82 °F) in September in Unawatuna. 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 rainfall intensity in Unawatuna in September?
In Unawatuna in September, there is 239 mm (9.39 in) rainfall, which means on average 8 mm (0.31 in) rainfall per day.
What is the average number of rainy days in September in Unawatuna?
There are 16 days, which are rainy in September in Unawatuna, 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 3.7 days of the week, or in general - 53 % days.
What is the air temperature in Unawatuna in September at night?
The average night temperature in Unawatuna in September is 25 °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 Unawatuna in September?
Humidity in September in Unawatuna is 80 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
Is it hot in Unawatuna in September?
In Unawatuna in September, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
How many sunny hours can I expect in September in Unawatuna?
There is an average length of sunshine of 6 hours per day in September in Unawatuna.
How windy is Unawatuna in September?
In September in Unawatuna, there will be an average wind scale of 4.
Is Unawatuna rainier in September than in August?
Yes, Unawatuna is a rainier September than in August.
How long is the day (from dawn till dusk) in Unawatuna in September?
The length of daylight in September in Unawatuna is 12 hours.