Weather in September 2025

Darien weather in September 2025

The temperatures in Darien in September are comfortable with low of 15°C and and high up to 24°C.

You can expect about 3 to 8 days of rain in Darien during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

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

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

Temperatures
Temperatures
24° / 15°
Rainy Days
Rainy Days
7
Snowy Days
Snowy Days
0
Dry Days
Dry Days
23
Rainfall
Rainfall
78
mm
7.6
Sun Hours
7.6
Hrs

Darien annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -1° / -8° 8 18 5 54 mm
Awful
February 0° / -7° 8 16 4 62 mm
Awful
March 8° / 0° 8 21 3 79 mm
Awful
April 14° / 5° 9 21 1 124 mm
Ok
May 20° / 11° 10 21 0 134 mm
Ok
June 26° / 17° 10 20 0 142 mm
Good
July 28° / 19° 9 22 0 100 mm
Good
August 27° / 19° 9 22 0 102 mm
Good
September 24° / 15° 7 23 0 78 mm
Good
October 16° / 9° 8 23 0 103 mm
Ok
November 9° / 2° 6 24 1 55 mm
Ok
December 2° / -4° 7 22 3 62 mm
Awful
Temperatures in Darien in September
Rain in Darien in September

Weather in Darien in September - FAQ

What is the average temperature in Darien in September?
The average temperature in Darien in September is 15/24° C.
What is the chance of rain in Darien in September?
On average, there are 7 rainy days in Darien during September.
Weather wise, is September a good time to visit Darien?
The weather in Darien in September is good.
Can it snow in Darien in September?
On average, there are 0 snowy days in Darien in September.
More about the weather in Darien