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Northern Ireland
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Flights

Northern Ireland Weather September

To help you choose the best time to travel, you can find climate data below on the weather in Northern Ireland in September.

day temperatureaverage daily high+17.1°C
night temperatureaverage daily low+9.6°C
sea temperaturesea temperature+14.6°C
day lengthdaytime13.3 h
sunny hours per daysunny / overcast hours3.8 / 9.5
average monthly precipitationaverage monthly precipitation77 mm

Best time with the soft weather for the sightseeing and long walks in Northern Ireland are June, July, August.

Best places in September


Temperature in Northern Ireland

In September the average daily maximum in Northern Ireland is +17.1°C, and the minimum +9.6°C.

Most booked hotels in Northern Ireland

Search flights to Northern Ireland

Best beach resorts in September:

Barcelona
Spain

Nice
France

Rimini
Italy

Cannes
France

Lisbon
Portugal

Marseille
France


Algarve
Portugal

Marbella
Spain

Naples
Italy

Split
Croatia

Jeju
South Korea

Dubrovnik
Croatia


Daylight hours

There are 13.3 hours of daylight in Northern Ireland in September. Out of these, on average 3.8 are sunny, which means it is mostly cloudy.

Most Popular Destinations in the World


Sea temperature

The average monthly temperature in the North Channel on the beaches of Northern Ireland in September is +14.6°C.

The water is cold and only apt for bathing for the most hardy people.

Northern Ireland climate by month


Precipitation

The amount of precipitation in Northern Ireland in September is usually 77 mm, which may cause a change of plans on certain days.