Westport Weather in September

Westport in September sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 75 mm (3 in), so pack a rain jacket to stay dry.

Rainfall in Westport in September

Based on our climate data of the past 30 years, about 11 days of rain are anticipated, with 75 mm (3 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Westport in September

If you're visiting Westport in September, expect highs of 19°C (66°F) and overnight lows around 10°C (50°F). September is part of the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

If you prefer enjoying temperate temperatures and rain-free days, July typically offers 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.