Wexford Weather in September

In Wexford, September brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 13°C (55°F). Expect quite a bit of rainfall this month.

Rainfall in Wexford in September

Climate statistics over the past 30 years suggest around 15 days of rain, with 80 mm (3.1 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Wexford in September

Daytime temperatures in Wexford reach 17°C (63°F) in September, dropping to 13°C (55°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Wexford in September

You can expect a moderate amount of sunlight, with approximately 144 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Wexford in September

Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in September

The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Wexford.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Ireland, check out our Wexford's climate page.

Wexford Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 17°C (63°F)  

Water Temperature 15°C (59°F) *  

Chance of Rain 50%  

Precipitation 80 mm (3.1 in)  

Rainy days 15 days  

Humidity 77% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 144 hours *  

Percentage Sunshine 40% *  

* Data from: Rosslare, Ireland (12 KM, 8 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Wexford typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°F).

Average temperatures in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

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

‹ January February March April May June July August September October November December ›

Historical weather for Wexford in September

Browse day-by-day weather records for Wexford spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Wexford historical weather extremes in September

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Wexford.

• The warmest day in September was on September 9, 2023, with a maximum of 25°C (77°F).
• Wexford experienced its chilliest September day on September 25, 2012, reaching only 11°C (52°F).
• The lowest overnight temperature recorded in September was 3°C (37°F) (September 29, 1982).

What to Wear in Wexford in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Expect water temperatures of around 15°C (59°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Wexford in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

6/10

Walking

6/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Ireland, check out our Wexford's climate page.

More climate data for Wexford

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Wexford climate overview or explore weather in Ireland.