When to go · Cascais
Cascais in September
Great month. Inside Cascais's best window: May–Jun, Sep–Oct.
Key facts
- Verdict
- Great
- Temperature
- 26°C (79°F)79°F (26°C) / 16°C (61°F)61°F (16°C)
- average high / low
- Rain days
- 5
- Crowds
- Medium
- Portugal overall
- Prices
- Medium
- Portugal overall
Verdict
Inside Cascais's best window: May–Jun, Sep–Oct.
Is another month better than September?
No other month rates higher than September for Cascais in this guide.
Weather in September
- CascaisHighs around 26 °C (79 °F), lows around 16 °C (61 °F), rain on about 5 daysHighs around 79 °F (26 °C), lows around 61 °F (16 °C), rain on about 5 days
- Lisbon and the centre, Portugal · Lisbon, Sintra, Cascais, Óbidos, Coimbrabest weather
Mild winters with rainy spells; hot, dry summers cooled by Atlantic wind. Sintra is often foggy and 5 °C (9 °F) cooler.Mild winters with rainy spells; hot, dry summers cooled by Atlantic wind. Sintra is often foggy and 9 °F (5 °C) cooler.
Crowds and prices
- Crowds · Portugal overall
- Medium
- Prices · Portugal overall
- Medium
Portugal overall: Warm sea, thinner crowds; grape harvest in the Douro.
Compare two months
Weather, crowds and prices for any two months in Cascais, side by side.
Verdict
Sep: Great
May: Great
Daytime high
Sep: 26 °C (79 °F)79 °F (26 °C)
May: 21 °C (70 °F)70 °F (21 °C)
Night low
Sep: 16 °C (61 °F)61 °F (16 °C)
May: 13 °C (55 °F)55 °F (13 °C)
Rain days
Sep: 5 (better)
May: 8
Crowds
Sep: Medium
May: Medium
Prices
Sep: Medium
May: Medium
Festivals listed
Sep: 0
May: 0
September: Inside Cascais's best window: May–Jun, Sep–Oct.
May: Inside Cascais's best window: May–Jun, Sep–Oct.
Cascais: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.