Castletownbere Weather in September

September in Castletownbere brings moderate temperatures around 17°C (63°F) during the day, dropping to 12°C (54°F) at night, with quite a bit of rainfall expected, averaging around 114 mm (4.5 in) for the month.

Rainfall in Castletownbere in September

Records from the past 30 years suggest around 19 days of rain, with 114 mm (4.5 in) average for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.

Temperature in Castletownbere in September

If you're visiting Castletownbere in September, expect highs of 17°C (63°F) and overnight lows around 12°C (54°F). 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 Castletownbere in September

You can expect a moderate amount of sunlight, with approximately 118 hours. This means a pleasant mix of sun and overcast.

For Castletownbere itself, May, June, 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.