Waterford Weather in September
With daytime temperatures of 17°C (63°F) and nighttime lows of 12°C (54°F), September in Waterford brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 78 mm (3.1 in) falls on average.
Rainfall in Waterford in September
Typically, you can expect about 16 days of rain this month, with 78 mm (3.1 in) on average. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Waterford in September
Expect highs of 17°C (63°F) in Waterford in September, with nights dropping to around 12°C (54°F). The summer season takes place during September. Conditions are often most pleasant around the middle of the day. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Waterford in September
The area enjoys a moderate level of sunlight, with around 144 hours. It's a good balance between sunny and cloudy days.If you prefer dry days with pleasant temperatures, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Waterford's climate page.
Waterford Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
17°C (63°F)
Chance of Rain
52%
Precipitation
78 mm (3.1 in)
Rainy days
16 days
Humidity
77% *
Sunshine
144 hours *
Percentage Sunshine
40% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Waterford typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
Average temperatures in September
Historical weather for Waterford in September
Browse day-by-day weather records for Waterford spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Waterford historical weather extremes in September
Our historical data for Waterford spans 1976 to 2025, revealing these weather extremes.
- On September 4, 2023, temperatures climbed to 25°C (77°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 11°C (52°F), recorded on September 25, 2012.
- Nighttime temperatures dropped to 2°C (36°F) on September 30, 1991, marking the coldest September night on record.
Best Places in Ireland in September
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Waterford 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. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Waterford in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Waterford's climate page.
Temperature Rainfall Sunshine Humidity
See the full Waterford climate overview or explore weather in Ireland.
