Weather in Portugal in September

In September, Portugal typically enjoys mild and pleasant weather. With moderate temperatures, it’s an excellent time for outdoor activities and exploration. Travellers can expect a blend of warm sunshine and gentle breezes, making it one of the best months to experience the beauty of Portugal’s landscapes. The weather remains conducive for outdoor exploration, with the season highlighting the region’s natural charm.

September Climate Overview

• Average Temperature: 18°C to 27°C
• Rainfall: Approximately 40mm
• Sunshine Hours: 9-10 hours per day
• Sea Temperature: 20°C (only when relevant to coastal areas)
• Humidity: Moderate, around 70%
• Wind Speed: Mild, averaging 12 km/h

What to Expect in September

Daytime Conditions

Daytimes in September are usually warm, with temperatures peaking around midday. The sun is pleasantly warm, with low to moderate humidity, providing comfortable conditions for outdoor adventures and sightseeing.

Rainfall Patterns

Rainfall in September is relatively rare and typically occurs in brief, light showers. It’s seldom enough to disrupt plans significantly, ensuring mostly dry conditions ideal for outdoor exploration.

Evening Conditions

Evenings tend to cool down slightly, offering a fresh and comfortable atmosphere. Light breezes often accompany the night, creating a pleasant setting for dinners or strolls.

Best Activities in Portugal in September

• Outdoor Activities: Ideal for hiking, exploring cultural sites, and engaging with nature due to comfortable temperatures.
• Seasonal Highlights: Harvest time, especially in vineyards, providing opportunities for visiting and tasting regional wine.
• Water-based or Nature-based Activities: In coastal areas, the sea remains warm enough for activities such as surfing and swimming.

What to Pack for September

• Light, breathable clothing for warm days, and a light jacket or sweater for cooler evenings
• Protection from the sun, such as a hat, sunscreen, and sunglasses
• An umbrella or raincoat in case of unexpected showers
• Comfortable footwear for walking and exploration
• A reusable water bottle to stay hydrated during outdoor activities