Dehiwala Weather in March

March in Dehiwala brings very high temperatures, with highs of 33°C (91°F) and nights dropping to 26°C (79°F). Rainfall is on the higher side this month, averaging around 97 mm (3.8 in), so keep a rain jacket handy.

Rainfall in Dehiwala in March

Historically, the month has about 8 days of rain, averaging 97 mm (3.8 in) in total. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Dehiwala in March

March in Dehiwala brings typical temperatures with highs around 33°C (91°F) and lows of 26°C (79°F). Mornings and evenings are often more comfortable than the peak afternoon hours. Nights stay warm at around 26°C (79°F), so light bedding and good ventilation are worth thinking about.

Sunshine in Dehiwala in March

Expect a lot of sunshine this month, with about 276 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Dehiwala in March

Wind speeds average 1 m/s (2 knots) during March. At this speed, you'll experience mostly light air movement that's just barely noticeable. As an average, some days will be completely calm while others have gentle breezes you can feel on your skin.

Average water temperature in March

The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.

For Dehiwala itself, January and February generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sri Lanka, check out our Dehiwala's climate page.

Dehiwala Temperature in March

Min Temperature 26°C (79°F)  

Max Temperature 33°C (91°F)  

Water Temperature 28°C (82°F) *  

Chance of Rain 28%  

Precipitation 97 mm (3.8 in)  

Rainy days 8 days  

Humidity 69% *  

Windspeed 1 m/s (2 knots) *  

Sunshine 276 hours *  

Percentage Sunshine *  

* Data from: Colombo, Sri Lanka (5 KM, 3 Miles).

Daily Historical Temperatures

47-year average (1976-2025)

Based on our historical records, temperatures in Dehiwala typically stay consistent throughout March, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 25°C (77°F).

Average temperatures in March

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Daily Historical Precipitation

47-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in March

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Dehiwala in March

Browse day-by-day weather records for Dehiwala spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Dehiwala historical weather extremes in March

Based on 25 years of weather observations (2001-2026), these are the most extreme conditions recorded in Dehiwala.

• The hottest March day on record in Dehiwala reached 36°C (97°F) (March 1, 2024).
• On March 7, 2002, Dehiwala saw its coldest March day with temperatures maxing out at 26°C (79°F).
• Dehiwala registered its coldest March night on March 12, 2021, with temperatures dropping to 20°C (68°F).

What to Wear in Dehiwala in March

Warm but pleasant conditions in Dehiwala in March. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 28°C (82°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Dehiwala in March

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sri Lanka, check out our Dehiwala's climate page.

More climate data for Dehiwala

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Dehiwala climate overview or explore weather in Sri Lanka.