- Snowfall
- Not applicable — tropical coastal location, no snow
Good to know
Good to Know
- June–August are peak season: book accommodation 6–8 weeks in advance; expect high prices and crowds.
- April–May and September–October offer excellent value with fewer crowds and good weather/surf conditions.
- December is the worst month for weather (heavy rain and rough seas); many businesses close November–March.
- The monsoon on Arugam Bay's east coast is typically milder and shorter than on Sri Lanka's south/west coasts, with rain often in short bursts rather than continuous.
- Off-season (November–March) brings lush green vegetation and active wildlife but frequent flooding during heavy rain days; most restaurants and hotels close.
- No significant temperature variation year-round; seasonal differences are driven by rainfall and wind/swell patterns, not heat.
Overview
Arugam Bay has two distinct seasons: a dry season (May–September) and a wet season (October–April). The location on Sri Lanka's east coast experiences different weather patterns than the south and west coasts.
Snowfall
Not applicable — tropical coastal location, no snow
Dry Season
- Months
- May to September
- Rainfall Mm Per Month
- Below 100 mm (June is driest at ~25 mm)
- Description
- Peak season with sunny, warm, and consistently dry weather. Strong, consistent ocean swells attract surfers globally.
Temperature Celsius
- Range
- 28–32°C (82–90°F)
- Peak Month July August
- 32
Temperature Fahrenheit
- Range
- 28–32°C (82–90°F)
- Peak Month July August
- 90
Wet Season
- Months
- October to April
- Rainfall Mm Per Month
- Over 250 mm (December is wettest at ~300 mm)
- Description
- Off-season characterized by intermittent heavy rain, smaller ocean swells, and many venues closed. Landscape becomes lush and green; wildlife more active.
- Monsoon Note
- Northeast monsoon brings rough seas and heavy rain from November–January, but is milder than monsoons affecting Sri Lanka's south/west coasts.
Temperature Celsius
- Range
- 25–28°C (77–82°F)
Temperature Fahrenheit
- Range
- 25–28°C (77–82°F)
Shoulder Seasons
- Months
- March–April and September–October
- Rainfall
- Variable but generally moderate
- Temperature Celsius
- Around 30°C (86°F)
- Temperature Fahrenheit
- Around 30°C (86°F)
- Description
- Quieter periods with good conditions and lower prices. April and May are considered underrated with excellent surf building into May.
Sea Temperature Celsius
28–30°C (86°F) year-round (most comfortable in April at ~30°C (86°F))
Sea Temperature Fahrenheit
28–30°C (86°F) year-round (most comfortable in April at ~30°C (86°F))
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Arugam Bay
Data last updated July 2026 · Verify anything important.