When to go · Viana do Castelo
Viana do Castelo in September
Great month. Inside Viana do Castelo's best window: May–Sep.
Key facts
- Verdict
- Great
- Temperature
- 25°C (77°F)77°F (25°C) / 15°C (59°F)59°F (15°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- Portugal overall
- Prices
- Medium
- Portugal overall
Verdict
Inside Viana do Castelo's best window: May–Sep.
Is another month better than September?
No other month rates higher than September for Viana do Castelo in this guide.
Weather in September
- Viana do CasteloHighs around 25 °C (77 °F), lows around 15 °C (59 °F), rain on about 7 daysHighs around 77 °F (25 °C), lows around 59 °F (15 °C), rain on about 7 days
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 Viana do Castelo, side by side.
Verdict
Sep: Great
May: Great
Daytime high
Sep: 25 °C (77 °F)77 °F (25 °C)
May: 20 °C (68 °F)68 °F (20 °C)
Night low
Sep: 15 °C (59 °F)59 °F (15 °C)
May: 11 °C (52 °F)52 °F (11 °C)
Rain days
Sep: 7 (better)
May: 10
Crowds
Sep: Medium
May: Medium
Prices
Sep: Medium
May: Medium
Festivals listed
Sep: 0
May: 0
September: Inside Viana do Castelo's best window: May–Sep.
May: Inside Viana do Castelo's best window: May–Sep.
Viana do Castelo: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.