St Kitts & Nevis weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Kitts & Nevis in September. Check more long-term weather averages for St Kitts & Nevis in September before you book your next holiday to St Kitts & Nevis in 2025/2026.

  • 31°C maximum daytime temperature in September in St Kitts & Nevis (St Kitts)31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 18 days with some rainfall in September in St Kitts & Nevis (St Kitts)18
    18 days with some rainfall
  • 25°C minimum night-time temperature in September in St Kitts & Nevis (St Kitts)25
    25°C min night temperature
  • 12 hours of daylight per day in September in St Kitts & Nevis (St Kitts)12
    12 hours of daylight per day
  • High heat & humidity in September in St Kitts & Nevis (St Kitts)H
    High heat & humidity
  • 139 mm monthly rainfall in September in St Kitts & Nevis (St Kitts)139
    139 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in St Kitts & Nevis (St Kitts)11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in St Kitts & Nevis (St Kitts)29
    29°C 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.

Top St Kitts & Nevis destinations

Below are average maximum temperatures at popular countries, regions and places in St Kitts & Nevis in September. Select a holiday destination to see more weather parameters.

All St Kitts & Nevis destinations

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

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More about St Kitts & Nevis

How hot is it in St Kitts & Nevis in September?

Daytime temperatures usually reach 31°C in St Kitts, St Kitts & Nevis in September with high heat and humidity, falling to 25°C at night.

How sunny is it in St Kitts & Nevis in September?

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

How warm is the sea around St Kitts & Nevis in September?

The average sea temperature around St Kitts, St Kitts & Nevis in September is 29°C.

Does it rain in St Kitts & Nevis in September?

There are usually 18 days with some rain in St Kitts, St Kitts & Nevis in September and the average monthly rainfall is 139mm.

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

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

St Kitts & Nevis September sunrise & sunset times

Browse the sunrise and sunset times for St Kitts & Nevis in September 2025. Select a month to view St Kitts & Nevis sunrise and sunset times for the next 12 months. The St Kitts & Nevis sunrise and sunset times shown below are for St Kitts.

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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