Weather in Sri Lanka in September 2018

  • 30°C maximum daytime temperature in September in Sri Lanka (Colombo)30
    30°C max day temperature
  • 6 hours of sunshine per day (50% of daylight hours) in September in Sri Lanka6
    6 hours of sunshine per day
  • 14 days with some rainfall in September in Sri Lanka (Colombo)14
    14 days with some rainfall
  • 25°C minimum night-time temperature in September in Sri Lanka (Colombo)25
    25°C min night temperature
  • 12 hours of daylight per day in September in Sri Lanka (Colombo)12
    12 hours of daylight per day
  • High heat & humidity in September in Sri Lanka (Colombo)H
    High heat & humidity
  • 236 mm monthly rainfall in September in Sri Lanka (Colombo)236
    236 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Sri Lanka (Colombo)11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Sri Lanka (Colombo)28
    28°C sea temperature

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Expect 30°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Sri Lanka in September. Check more long-term weather averages for Sri Lanka in September before you book your next holiday to Sri Lanka in 2018. The September weather averages shown above are for Colombo.

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Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Sri Lanka weather in September

The average maximum daytime temperature in Sri Lanka in September is a hot 30°C (86°F) with high heat & humidity. The average night-time temperature is usually a warm 25°C (77°F). There are usually 6 hours of bright sunshine each day, which represents 50% of the 12 hours of daylight.

Expect 236mm (9.3 inches) of rainfall across the whole of September with 14 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.

The average sea temperature in and around Sri Lanka in September is 28°C (82°F).

The weather in Sri Lanka in September is represented by Colombo.

Sri Lanka sunrise & sunset times for September 2018

Browse the sunrise & sunset times for Sri Lanka in September 2018. Select a month to view Sri Lanka sunrise & sunset times for the next twelve months. The Sri Lanka sunrise & sunset times shown below are for Colombo.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st September 2018 06:03 18:18
Sunday, 2nd September 2018 06:03 18:17
Monday, 3rd September 2018 06:03 18:17
Tuesday, 4th September 2018 06:03 18:16
Wednesday, 5th September 2018 06:03 18:16
Thursday, 6th September 2018 06:03 18:15
Friday, 7th September 2018 06:02 18:15
Saturday, 8th September 2018 06:02 18:14
Sunday, 9th September 2018 06:02 18:14
Monday, 10th September 2018 06:02 18:13
Tuesday, 11th September 2018 06:02 18:13
Wednesday, 12th September 2018 06:02 18:12
Thursday, 13th September 2018 06:01 18:12
Friday, 14th September 2018 06:01 18:11
Saturday, 15th September 2018 06:01 18:11
Sunday, 16th September 2018 06:01 18:10
Monday, 17th September 2018 06:01 18:09
Tuesday, 18th September 2018 06:01 18:09
Wednesday, 19th September 2018 06:00 18:08
Thursday, 20th September 2018 06:00 18:08
Friday, 21st September 2018 06:00 18:07
Saturday, 22nd September 2018 06:00 18:07
Sunday, 23rd September 2018 06:00 18:06
Monday, 24th September 2018 06:00 18:06
Tuesday, 25th September 2018 05:59 18:05
Wednesday, 26th September 2018 05:59 18:05
Thursday, 27th September 2018 05:59 18:04
Friday, 28th September 2018 05:59 18:04
Saturday, 29th September 2018 05:59 18:03
Sunday, 30th September 2018 05:59 18:02
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