Birr Weather in September

September in Birr brings moderate temperatures around 18°C (64°F) during the day, dropping to 10°C (50°F) at night, with quite a bit of rainfall expected, averaging around 77 mm (3 in) for the month.

Rainfall in Birr in September

Records from the past 30 years suggest around 17 days of rain, with 77 mm (3 in) average for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Birr in September

Expect highs of 18°C (64°F) in Birr in September, with nights dropping to around 10°C (50°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 10°C (50°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 Birr in September

You can expect a moderate amount of sunlight, with approximately 116 hours. This means a pleasant mix of sun and overcast.

For Birr itself, July and August generally stand out with 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.