September is a hot and dry time for sunbathing in Sri Lanka. September is an excellent month for swimming in Sri Lanka with very warm sea temperatures. Consider visiting Sri Lanka in the months of February, March, April, July, for the best beach weather. Also consider one of our other suggestions for September.
The average maximum temperature in Sri Lanka in September is 32°. The average maximum temperature is 32° in the previous month and 32° in the next month.
The average temperature in Sri Lanka in September is 29°. The average temperature ranges is 29° in the previous month and 28° in the next month.
The average minimum temperature in Sri Lanka in September is 25°. The minimum temperature is 26° in the previous month and 25° in the next month.
The average day light hours per day in Sri Lanka in September are 12.2 and there are 8.7 hours of sunshine per day on average during September making it a sunny month with few clouds.
The ultraviolet index in Sri Lanka in September is typically 14.2 during September. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Sri Lanka in September is 28.1° which is very warm and ideal for relaxing and swimming for the whole day.
The average total rainfall in Sri Lanka in September is 1.8cm and on average there are 8.2 rainy days in September making it a dry time to visit the beach.
The maximum dew point (an indicator of humidity) in Sri Lanka in September is 24° which is very uncomfortable and fairly oppressive unless you are on a beach. At night you would most likely require airconditioning. The dew point is 24° in the previous month and 25° in the next month.
The average maximum relative humidity in Sri Lanka in September is typically 85.6%. The maximum relative humidity is 84.7% in the previous month and 90.6% in the next month.
The average relative humidity in Sri Lanka in September is typically 72.2%. The average relative humidity is 71.7% in the previous month and 77.4% in the next month.
The average maximum wind speed in Sri Lanka in September is typically 22kmh. The average maximum wind speed is 23kmh in the previous month and 17kmh in the next month.
The average wind speed in Sri Lanka in September is typically 13kmh. The average wind speed is 14kmh in the previous month and 9kmh in the next month.
The average wind direction in Sri Lanka in September is from the West-Northwest.
