Mount Lavinia Weather in May
May in Mount Lavinia brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 26°C (79°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.
Rainfall in Mount Lavinia in May
As part of the rainy season, Mount Lavinia sees around 14 days of rain in May, with an average of 299 mm (12 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Mount Lavinia in May
Daytime highs in Mount Lavinia in May reach 31°C (88°F), with nights around 26°C (79°F). It's usually most comfortable outside during the morning and later in the day. Nights are warm at 26°C (79°F), which can make sleeping uncomfortable. Keeping windows open or using a fan can help. A cold shower before bed is also a good way to cool down.
Sunshine in Mount Lavinia in May
Expect sunny days throughout the month, with an estimated 202 hours of sunshine. Despite being the rainy season, it could still be a nice time to visit. Rain often arrives later in the day, keeping most of the days sunny.
Wind Speed in Mount Lavinia in May
May sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.
Average water temperature in May
At 28°C (82°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you're looking for dry conditions and comfortable temperatures, May may not be the ideal month to visit Mount Lavinia. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Mount Lavinia's climate page.
Mount Lavinia Temperature in May
Min Temperature
26°C (79°F)
Max Temperature
31°C (88°F)
Water Temperature
28°C (82°F) *
Chance of Rain
46%
Precipitation
299 mm (12 in)
Rainy days
14 days
Humidity
77% *
Windspeed
2 m/s (4 knots) *
Sunshine
202 hours *
Percentage Sunshine
*
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in Mount Lavinia typically stay consistent throughout May, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in May
Daily Historical Precipitation
44-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Mount Lavinia in May
Browse day-by-day weather records for Mount Lavinia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mount Lavinia historical weather extremes in May
Based on 30 years of weather observations (1995-2025), these are the most extreme conditions recorded in Mount Lavinia.
- The hottest May day on record in Mount Lavinia reached 37°C (99°F) (May 29, 1998).
- The coldest May day was on May 7, 1997, with a maximum of 25°C (77°F).
- Nighttime temperatures dropped to 20°C (68°F) on May 13, 2003, marking the coldest May night on record.
Best Places in Sri Lanka in May
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month. See all of Sri Lanka in May →
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What to Wear in Mount Lavinia in May
Warm but pleasant conditions in Mount Lavinia in May. 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. It's going to pour! Pack a good poncho and prepare for very wet conditions. The water temperature sits at about 28°C (82°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Mount Lavinia in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Mount Lavinia's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Mount Lavinia climate overview or explore weather in Sri Lanka.
