St Kitts 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 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.

  • 31°C maximum daytime temperature in September in St Kitts31
    31°C max day temperature
  • 8 hours of sunshine per day
  • 18 days with some rainfall in September in St Kitts18
    18 days with some rainfall
  • 25°C minimum night-time temperature in September in St Kitts25
    25°C 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
  • 139 mm monthly rainfall in September in St Kitts139
    139 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in St Kitts11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in St Kitts29
    29°C sea temperature

More about St Kitts

St Kitts by month

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

Recommended for St Kitts & Nevis

Marella Cruises: up to 5% off ocean cruises

  • Book online & save up to 5% on Marella Cruises
  • Discount varies by season. Book online with TUI
  • Destinations across the Med, Caribbean & USA
Go to Marella Cruises deal >>

View all Marella Cruises offers

Marella CruisesCruise deal finder

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 / mm)  |  Imperial (°F / inches)

Back to top

More about St Kitts & Nevis

How hot is it in St Kitts in September?

Daytime temperatures usually reach 31°C in St Kitts in September with high heat and humidity, falling to 25°C 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 29°C.

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 139mm.

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

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^