Portlaoise
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Portlaoise Weather in September

September in Portlaoise brings moderate temperatures, with daytime highs of 18°C (64°F) and nights around 10°C (50°F). Quite a bit of rainfall is expected, around 72 mm (2.8 in), so pack an umbrella.

Rainfall in Portlaoise in September

Historically, September sees about 17 days of rain, with a monthly average of 72 mm (2.8 in). Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Portlaoise in September

September in Portlaoise sees highs of 18°C (64°F) and lows of 10°C (50°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Portlaoise.

Portlaoise Temperature in September

Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Chance of Rain
55%
Precipitation
72 mm (2.8 in)
Rainy days
17 days

Portlaoise Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Portlaoise - and find the best time to visit.

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
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Portlaoise 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.

What To Do in Portlaoise in September

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

  • Cycling
    6/10
  • Walking
    6/10
  • Camping
    4/10
  • Outdoor sports
    9/10

Portlaoise 3-Day Forecast

More climate data for Portlaoise

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.