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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.
average daily high | +17.1°C | |
average daily low | +9.6°C | |
sea temperature | +14.6°C | |
daytime | 13.3 h | |
sunny / overcast hours | 3.8 / 9.5 | |
average monthly precipitation | 77 mm | |
Best time with the soft weather for the sightseeing and long walks in Northern Ireland are June, July, August.
Temperature in Northern Ireland
In September the average daily maximum in Northern Ireland is +17.1°C, and the minimum +9.6°C.
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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.
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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.