🇱🇰 Weather in Bentota in September
This is what the weather in Bentota (Sri Lanka) was like in September in 2017–2026.
Key facts at a glance
Avg. daytime high
28.2 °C
27.9 °C – 28.8 °C
Avg. night-time low
25.7 °C
25.1 °C – 26.2 °C
Avg. rain days in period
25.7
86 % of days · ≥ 1.0 mm
Avg. precipitation in period
227 mm
92.3 mm – 448 mm
Avg. sunshine per day
n/a
Sunshine duration is not available from this data source.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 29.8 °C (30 Sep 2024) · Lowest temperature 24.2 °C (29 Sep 2019) · Avg. daily peak wind 23 km/h
Weather mix of all days
- 5Sunny
- 24Partly cloudy
- 13Cloudy
- 101Light rain
- 156Rain
Summary
- On average 28.2 °C during the day and 25.7 °C at night.
- On average 25.7 rain days (Rain day = at least 1.0 mm of precipitation) with 227 mm of precipitation in total.
- Prevailing: Rain.
- Warmest year: 2024 (avg. 28.8 °C), coolest: 2020 (avg. 27.9 °C).
- Wettest year: 2023 (448 mm), driest: 2022 (92.3 mm).
- Extremes: 29.8 °C on 30 Sep 2024 and 24.2 °C on 29 Sep 2019.
Overall values from all 10 years. How is this calculated?
Charts
Temperatures per year
Average over your travel period
Precipitation & rain days
Year by year
2026
Avg. max28.7°Avg. min26.2°- Rain days
- 29 Rain days
- Precipitation
- 258 mm
- Avg. sunshine per day
- n/a
- Sea temperature
- –
Max 29.5 °C · Min 25.6 °C
2025
Avg. max28.4°Avg. min25.8°- Rain days
- 25 Rain days
- Precipitation
- 173 mm
- Avg. cloud cover
- 81 % cloudy
- Sea temperature
- –
Max 29.0 °C · Min 25.0 °C
2024
Avg. max28.8°Avg. min26.2°- Rain days
- 25 Rain days
- Precipitation
- 110 mm
- Avg. cloud cover
- 82 % cloudy
- Sea temperature
- –
Max 29.8 °C · Min 25.2 °C
2023
Avg. max28.3°Avg. min25.8°- Rain days
- 30 Rain days
- Precipitation
- 448 mm
- Avg. cloud cover
- 92 % cloudy
- Sea temperature
- –
Max 29.1 °C · Min 25.2 °C
2022
Avg. max27.9°Avg. min25.2°- Rain days
- 14 Rain days
- Precipitation
- 92.3 mm
- Avg. cloud cover
- 71 % cloudy
- Sea temperature
- –
Max 28.8 °C · Min 24.5 °C
2021
Avg. max28.1°Avg. min25.9°- Rain days
- 30 Rain days
- Precipitation
- 200 mm
- Avg. cloud cover
- 83 % cloudy
- Sea temperature
- –
Max 29.2 °C · Min 25.4 °C
2020
Avg. max27.9°Avg. min25.5°- Rain days
- 30 Rain days
- Precipitation
- 285 mm
- Avg. cloud cover
- 93 % cloudy
- Sea temperature
- –
Max 28.6 °C · Min 24.7 °C
2019
Avg. max28.1°Avg. min25.4°- Rain days
- 30 Rain days
- Precipitation
- 378 mm
- Avg. cloud cover
- 86 % cloudy
- Sea temperature
- –
Max 29.3 °C · Min 24.2 °C
2018
Avg. max28.1°Avg. min25.1°- Rain days
- 19 Rain days
- Precipitation
- 141 mm
- Avg. cloud cover
- 70 % cloudy
- Sea temperature
- –
Max 28.8 °C · Min 24.5 °C
2017
Avg. max28.0°Avg. min25.4°- Rain days
- 25 Rain days
- Precipitation
- 183 mm
- Avg. cloud cover
- 80 % cloudy
- Sea temperature
- –
Max 28.9 °C · Min 24.9 °C
Frequently asked questions
- How warm is it in Bentota in September?
- Daytime highs averaged 28.2 °C, night-time lows 25.7 °C. The highest value of the past 10 years was 29.8 °C (30 Sep 2024), the lowest 24.2 °C (29 Sep 2019).
- How often does it rain in Bentota in September?
- On average there were 25.7 rain days (at least 1 mm) with 227 mm of precipitation in total.
Check your exact travel dates
Choose your travel period – we show the weather for exactly those days.
Other destinations in September
Data sources
- Weather data
- Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains. - Sea temperature
- MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis) - Place search
- Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)