St Helena & Islands weather in October 2025

Q: How hot is it in St Helena & Islands in October?

Daytime temperatures usually reach 18°C in St Helena, St Helena & Islands in October, falling to 15°C at night.

Q: How warm is the sea around St Helena & Islands in October?

The average sea temperature around St Helena, St Helena & Islands in October is 20°C.

Q: Does it ever rain in St Helena & Islands in October?

There are usually 14 days with some rain in St Helena, St Helena & Islands in October and the average monthly rainfall is 43mm.

Expect 18°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in St Helena & Islands in October. Check more long-term weather averages for St Helena & Islands in October before you book your next holiday to St Helena & Islands in 2025/2026.

18
18°C max day temperature
14
14 days with some rainfall
15
15°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
43
43 mm of monthly rainfall
11
11+ (Extreme) UV index
20
20°C sea temperature

More about St Helena & Islands

St Helena & Islands by month

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

Recommended for St Helena & Islands

Momondo: Compare latest car hire deals

Sale

Search & compare the best car hire deals
Free 48-hour cancellation policy & no hidden charges
Check prices with Avis, Europcar, Sixt & more

Go to Momondo deal >>

View all Momondo offers

The October weather guide for St Helena & Islands (St Helena) 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 Helena & Islands destinations

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

All St Helena & Islands destinations

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

How hot is it in St Helena & Islands in October?

Daytime temperatures usually reach 18°C in St Helena, St Helena & Islands in October, falling to 15°C at night.

How warm is the sea around St Helena & Islands in October?

The average sea temperature around St Helena, St Helena & Islands in October is 20°C.

Does it ever rain in St Helena & Islands in October?

There are usually 14 days with some rain in St Helena, St Helena & Islands in October and the average monthly rainfall is 43mm.

St Helena & Islands October sunrise & sunset times

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

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