🇱🇰 Weather in Bentota in May
This is what the weather in Bentota (Sri Lanka) was like in May in 2017–2026.
Key facts at a glance
Avg. daytime high
29.1 °C
28.5 °C – 29.8 °C
Avg. night-time low
26.7 °C
26.1 °C – 27.2 °C
Avg. rain days in period
29.6
95 % of days · ≥ 1.0 mm
Avg. precipitation in period
323 mm
126 mm – 416 mm
Avg. cloud cover
83 %
This data source has no sunshine hours – average cloud cover shown instead.
Avg. sea temperature
–
Sea temperature unavailable for today (daily limit).
Extremes: Highest temperature 31.8 °C (12 May 2020) · Lowest temperature 25.2 °C (19 May 2018) · Avg. daily peak wind 22 km/h
Weather mix of all days
- 7Sunny
- 6Partly cloudy
- 1Cloudy
- 81Light rain
- 215Rain
Summary
- On average 29.1 °C during the day and 26.7 °C at night.
- On average 29.6 rain days (Rain day = at least 1.0 mm of precipitation) with 323 mm of precipitation in total.
- Prevailing: Rain.
- Warmest year: 2024 (avg. 29.8 °C), coolest: 2018 (avg. 28.5 °C).
- Wettest year: 2018 (416 mm), driest: 2019 (126 mm).
- Extremes: 31.8 °C on 12 May 2020 and 25.2 °C on 19 May 2018.
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. max29.1°Avg. min27.0°- Rain days
- 31 Rain days
- Precipitation
- 389 mm
- Avg. cloud cover
- 86 % cloudy
- Sea temperature
- –
Max 30.7 °C · Min 26.6 °C
2025
Avg. max29.1°Avg. min26.7°- Rain days
- 31 Rain days
- Precipitation
- 224 mm
- Avg. cloud cover
- 87 % cloudy
- Sea temperature
- –
Max 29.8 °C · Min 26.0 °C
2024
Avg. max29.8°Avg. min27.2°- Rain days
- 30 Rain days
- Precipitation
- 370 mm
- Avg. cloud cover
- 90 % cloudy
- Sea temperature
- –
Max 31.2 °C · Min 26.3 °C
2023
Avg. max29.2°Avg. min26.6°- Rain days
- 29 Rain days
- Precipitation
- 260 mm
- Avg. cloud cover
- 72 % cloudy
- Sea temperature
- –
Max 30.2 °C · Min 25.6 °C
2022
Avg. max28.6°Avg. min26.6°- Rain days
- 31 Rain days
- Precipitation
- 319 mm
- Avg. cloud cover
- 86 % cloudy
- Sea temperature
- –
Max 29.8 °C · Min 25.7 °C
2021
Avg. max29.0°Avg. min26.5°- Rain days
- 30 Rain days
- Precipitation
- 404 mm
- Avg. cloud cover
- 86 % cloudy
- Sea temperature
- –
Max 30.3 °C · Min 25.7 °C
2020
Avg. max29.4°Avg. min26.9°- Rain days
- 31 Rain days
- Precipitation
- 385 mm
- Avg. cloud cover
- 84 % cloudy
- Sea temperature
- –
Max 31.8 °C · Min 26.3 °C
2019
Avg. max29.4°Avg. min26.7°- Rain days
- 21 Rain days
- Precipitation
- 126 mm
- Avg. cloud cover
- 64 % cloudy
- Sea temperature
- –
Max 30.0 °C · Min 26.1 °C
2018
Avg. max28.5°Avg. min26.1°- Rain days
- 31 Rain days
- Precipitation
- 416 mm
- Avg. cloud cover
- 92 % cloudy
- Sea temperature
- –
Max 30.5 °C · Min 25.2 °C
2017
Avg. max29.1°Avg. min26.4°- Rain days
- 31 Rain days
- Precipitation
- 333 mm
- Avg. cloud cover
- 84 % cloudy
- Sea temperature
- –
Max 30.2 °C · Min 25.4 °C
Frequently asked questions
- How warm is it in Bentota in May?
- Daytime highs averaged 29.1 °C, night-time lows 26.7 °C. The highest value of the past 10 years was 31.8 °C (12 May 2020), the lowest 25.2 °C (19 May 2018).
- How often does it rain in Bentota in May?
- On average there were 29.6 rain days (at least 1 mm) with 323 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 May
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)