Dehiwala Climate by Month
Dehiwala has a steady very warm climate throughout the year.
It is also known for its large amounts of rainfall.
Let’s explore the climate details in depth to provide you with a complete overview.
Average day and night temperature
In Dehiwala temperatures are generally consistent throughout the year. Typically, daytime temperatures range from a very warm 33°C in March to a comfortable 30°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 24°C, particularly during the colder months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
Dehiwala experiences significant rainfall throughout the year, averaging 2638 mm of precipitation annually. The climate in Dehiwala shows significant variation throughout the year. Expect heavy rainfall in October, with an average of 355 mm of precipitation over 16 rainy days. In contrast, January offers drier and sunnier days, with around 74 mm of rainfall over 5 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
Dehiwala offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between March (9.2 hours daily) and September (6.3 hours daily) provides a bit of variety for visitors and residents.Monthly hours of sunshine
Daily hours of sunshine
Average water temperature
The mean water temperature over the year in Dehiwala ranges from 26°C in August to 28°C in January.
Water temperature over the year
Average humidity
The relative humidity is moderate throughout the year in Dehiwala.
Relative humidity over the year
Average wind speed
The mean wind speed over the year in Dehiwala ranges from 1°C in February to 2°C in January.
The mean monthly wind speed over the year (meters per second)
The best time of year to visit Dehiwala in Sri Lanka
Dehiwala has high temperatures year round ranging between 29°C and 32°C.Other facts from our historical weather data:
March has an average maximum temperature of 33°C and is the hottest month of the year.
The coolest month is January with an average maximum temperature of 30°C.
October tops the wettest month list with 355 mm of rainfall.
January is the driest month with 74 mm of precipitation.
March is the sunniest month with an average of 276 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
