Climate almanac
Portlaoise
Leinster, Ireland · 53.03°, -7.30°
What is the weather like in Portlaoise in September?
In September, Portlaoise is typically 62°F (17°C) during the day and 50°F (10°C) at night. The month brings about 3.3 in (85 mm) of precipitation in total.
- Average high62°F (17°C)
- Average low50°F (10°C)
- Precipitation3.3 in (85 mm)
- Clear or mostly clear days2
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)