Weather in Castries in September 2017

Check the weather in Castries in September based on long-term weather averages before you book your next holiday to St Lucia in 2017. Expect daytime temperatures to reach 30°C with on average 8 hours of sunshine per day in Castries in September.

What is the weather like in Castries in September?
How hot is Castries in September? 30°C
How sunny is Castries in September? 8 sunshine hours/day
How wet is Castries in September? 224 mm rainfall
How warm is the sea around Castries in September? 29°C

Weather in Castries in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

  • 30°C maximum daytime temperature in September in Castries30
    30°C max day temperature
  • 8 hours of sunshine per day (62% of daylight hours) in September in Castries8
    8 hours of sunshine per day
  • 25 days with some rainfall in September in Castries25
    25 days with some rainfall
  • 24°C minimum night-time temperature in September in Castries24
    24°C min night temperature
  • 12 hours of daylight per day in September in Castries12
    12 hours of daylight per day
  • Very high heat & humidity in September in CastriesVH
    Very High heat & humidity
  • 224 mm monthly rainfall in September in Castries224
    224 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Castries11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Castries29
    29°C sea temperature

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

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More about Castries

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More about Castries weather in September

The average maximum daytime temperature in Castries in September is a hot 30°C (86°F) with very high heat & humidity. There are usually 8 hours of bright sunshine each day, which represents 62% of the 12 hours of daylight. The average sea temperature in and around Castries in September is 29°C (84°F).

Expect 224mm (8.8 inches) of rainfall across the whole of September with 25 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear. The average night-time temperature is usually a warm 24°C (75°F). The weather in Castries in September is represented by Castries.

Castries sunrise & sunset times for September 2017

Browse the sunrise & sunset times for Castries in September 2017. Select a month to view Castries sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Friday, 1st September 2017 05:52 18:15
Saturday, 2nd September 2017 05:52 18:15
Sunday, 3rd September 2017 05:52 18:14
Monday, 4th September 2017 05:53 18:13
Tuesday, 5th September 2017 05:53 18:12
Wednesday, 6th September 2017 05:53 18:12
Thursday, 7th September 2017 05:53 18:11
Friday, 8th September 2017 05:53 18:10
Saturday, 9th September 2017 05:53 18:10
Sunday, 10th September 2017 05:53 18:09
Monday, 11th September 2017 05:53 18:08
Tuesday, 12th September 2017 05:53 18:07
Wednesday, 13th September 2017 05:53 18:07
Thursday, 14th September 2017 05:53 18:06
Friday, 15th September 2017 05:53 18:05
Saturday, 16th September 2017 05:53 18:04
Sunday, 17th September 2017 05:53 18:04
Monday, 18th September 2017 05:53 18:03
Tuesday, 19th September 2017 05:53 18:02
Wednesday, 20th September 2017 05:53 18:01
Thursday, 21st September 2017 05:53 18:01
Friday, 22nd September 2017 05:53 18:00
Saturday, 23rd September 2017 05:53 17:59
Sunday, 24th September 2017 05:53 17:58
Monday, 25th September 2017 05:53 17:58
Tuesday, 26th September 2017 05:53 17:57
Wednesday, 27th September 2017 05:53 17:56
Thursday, 28th September 2017 05:53 17:56
Friday, 29th September 2017 05:53 17:55
Saturday, 30th September 2017 05:53 17:54
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Castries weather by month

Check Castries weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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