No
you don't need a jacket based on the weather in Sintra, Portugal 1 second ago
67°F20°C & Mostly Cloudy
Wind is 7 mph12 km/h from the Northwest, gusting to 17 mph28 km/h
| September 10 | ||||
| 6pm | 67°F19°C | 8 mph12 km/h Northwest | Mostly Cloudy | |
| 7pm | 66°F19°C | 7 mph11 km/h Northwest | Mostly Cloudy | |
| 8pm | 66°F19°C | 7 mph11 km/h Northwest | Mostly Cloudy | |
| 9pm | 65°F18°C | 7 mph11 km/h Northwest | Mostly Cloudy | |
| 10pm | 65°F18°C | 7 mph12 km/h North | Mostly Cloudy | |
| 11pm | 64°F18°C | 7 mph12 km/h North | Mostly Cloudy | |
| September 11 | ||||
| 12am | 64°F18°C | 8 mph13 km/h North | Mostly Cloudy | |
| 1am | 64°F18°C | 8 mph13 km/h North | Mostly Cloudy | |
| 2am | 64°F18°C | 8 mph13 km/h North | Mostly Cloudy | |
| 3am | 64°F18°C | 8 mph13 km/h North | Partly Cloudy | |
| 4am | 66°F19°C | 9 mph14 km/h North | Partly Cloudy | |
| 5am | 68°F20°C | 10 mph15 km/h North | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 9 | 64°F18°C | 71°F22°C | 10 mph16 km/h from Northwest | Mostly Cloudy | Mostly Cloudy |
| September 10 | 64°F18°C | 75°F24°C | 12 mph19 km/h from North | Mostly Clear | Partly Cloudy |
| September 11 | 63°F17°C | 75°F24°C | 12 mph20 km/h from North | Partly Cloudy | Mostly Cloudy |
| September 12 | 61°F16°C | 73°F23°C | 14 mph22 km/h from North | Partly Cloudy | Partly Cloudy |
| September 13 | 63°F17°C | 75°F24°C | 13 mph21 km/h from North | Mostly Clear | Partly Cloudy |
| September 14 | 62°F17°C | 76°F25°C | 15 mph24 km/h from North | Mostly Clear | Windy |
| September 15 | 59°F15°C | 71°F22°C | 15 mph25 km/h from North | Windy | Mostly Clear |
No
Low of 64°F18°C, High of 75°F24°CWind: 12 mph19 km/h
Precipitation: None