St Kitts weather in September 2025

Expect 88°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Kitts in September. Check more long-term weather averages for St Kitts in September before you book your next holiday to St Kitts & Nevis in 2025/2026.

  • 88°F maximum daytime temperature in September in St Kitts88
    88°F max day temperature
  • 8 hours of sunshine per day
  • 18 days with some rainfall in September in St Kitts18
    18 days with some rainfall
  • 77°F minimum night-time temperature in September in St Kitts77
    77°F min night temperature
  • 12 hours of daylight per day in September in St Kitts12
    12 hours of daylight per day
  • High heat & humidity in September in St KittsH
    High heat & humidity
  • 5.5 inches monthly rainfall in September in St Kitts5.5
    5.5 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in St Kitts11
    11+ (Extreme) UV index
  • 84°F sea temperature in September in St Kitts84
    84°F sea temperature

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The September weather guide for St Kitts & Nevis (St Kitts) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about St Kitts & Nevis

How hot is it in St Kitts in September?

Daytime temperatures usually reach 88°F in St Kitts in September with high heat and humidity, falling to 77°F at night.

How sunny is it in St Kitts in September?

There are normally 8 hours of bright sunshine each day in St Kitts in September - that's 64% of daylight hours.

How warm is the sea around St Kitts in September?

The average sea temperature around St Kitts in September is 84°F.

Does it rain in St Kitts in September?

There are usually 18 days with some rain in St Kitts in September and the average monthly rainfall is 5.5 inches.

What is the chance of a hurricane in St Kitts in September?

On average 1.2 days in September in St Kitts are likely to be affected by the passage of one or more tropical storms.

St Kitts September sunrise & sunset times

Browse the sunrise and sunset times for St Kitts in September 2025. Select a month to view St Kitts sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:57 18:24
Monday, 15th September 2025 05:59 18:13
Tuesday, 30th September 2025 06:01 18:00

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