Weather in September 2025

Coleraine weather in September 2025

°C °F

The average weather in Coleraine in September

The temperatures in Coleraine in September are usually low and can range between 11°C and 15°C.

You can expect rain for roughly half of the month of September in Coleraine. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.

Our weather forecast can give you a great sense of what weather to expect in Coleraine in September 2025.

If you’re planning to visit Coleraine in the near future, we highly recommend that you review the 14 day weather forecast for Coleraine before you arrive.

Temperatures
15° / 11°
Rainy Days
8
Snowy Days
0
Dry Days
22
Rainfall
107
mm
Sun Hours
2.9
Hrs

Explore the weather in Coleraine in other months

Coleraine annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 7° / 4° 12 16 3 122 mm
Awful
February 7° / 4° 11 14 4 119 mm
Awful
March 9° / 4° 10 20 2 105 mm
Awful
April 10° / 6° 8 22 1 84 mm
Bad
May 12° / 8° 9 22 0 107 mm
Bad
June 15° / 10° 9 21 0 122 mm
Ok
July 16° / 12° 10 21 0 149 mm
Ok
August 16° / 12° 10 21 0 142 mm
Ok
September 15° / 11° 8 22 0 107 mm
Ok
October 13° / 9° 10 21 0 134 mm
Bad
November 10° / 7° 10 20 0 133 mm
Bad
December 8° / 5° 11 18 2 120 mm
Awful

Weather in Coleraine in September - FAQ

What is the average temperature in Coleraine in September?
The average temperature in Coleraine in September is 11/15° C.
What is the chance of rain in Coleraine in September?
On average, there are 8 rainy days in Coleraine during September.
Weather wise, is September a good time to visit Coleraine?
The weather in Coleraine in September is ok.
Can it snow in Coleraine in September?
On average, there are 0 snowy days in Coleraine in September.
More about the weather in Coleraine