Weather in Negombo in September
Negombo, Sri Lanka averages a high of 28.5°C (83.3°F) and low of 24.9°C (76.8°F) in September, with 27 rain days and 9.3 hours of daily sunshine. Travel score: 64.7/100 (Good). The best time to visit Negombo is February.
High
29°C83°F
Low
25°C77°F
🌧️
27
rain days
☀️
9.3
hrs/day sunshine
💧
87%
humidity
65— Good
September in Negombo is hot and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Negombo?
How much does it rain in Negombo in September?
Negombo receives an average of 240.6mm of rainfall across 27 rainy days in September. The annual total is 2346.6mm.
What should I pack for Negombo in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 29°C
🧥
Waterproof jacket
Frequent rain expected (27 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Sri Lanka in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31