No
you don't need a jacket based on the weather in Sintra, Portugal 1 second ago
82°F28°C & Clear
Wind is 7 mph11 km/h from the North, gusting to 16 mph25 km/h
| September 17 | ||||
| 10am | 82°F28°C | 7 mph12 km/h North | Clear | |
| 11am | 82°F28°C | 8 mph13 km/h North | Clear | |
| 12pm | 81°F27°C | 8 mph14 km/h North | Clear | |
| 1pm | 79°F26°C | 9 mph14 km/h North | Clear | |
| 2pm | 76°F24°C | 9 mph14 km/h North | Clear | |
| 3pm | 72°F22°C | 8 mph13 km/h North | Clear | |
| 4pm | 70°F21°C | 8 mph13 km/h North | Mostly Clear | |
| 5pm | 69°F20°C | 8 mph13 km/h North | Partly Cloudy | |
| 6pm | 68°F20°C | 7 mph12 km/h North | Partly Cloudy | |
| 7pm | 67°F19°C | 7 mph11 km/h North | Partly Cloudy | |
| 8pm | 66°F19°C | 5 mph8 km/h North | Partly Cloudy | |
| 9pm | 65°F18°C | 4 mph7 km/h North | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 60°F15°C | 82°F28°C | 7 mph11 km/h from North | Clear | Partly Cloudy |
| September 17 | 64°F18°C | 81°F27°C | 4 mph6 km/h from Northwest | Mostly Cloudy | Mostly Clear |
| September 18 | 65°F18°C | 80°F26°C | 6 mph9 km/h from South | Partly Cloudy | Mostly Cloudy |
| September 19 | 62°F17°C | 75°F24°C | 8 mph12 km/h from Northwest | Partly Cloudy | Mostly Clear |
| September 20 | 58°F14°C | 68°F20°C | 16 mph26 km/h from North | Windy | Mostly Clear |
| September 21 | 54°F12°C | 65°F18°C | 16 mph26 km/h from North | Windy | Clear |
| September 22 | 52°F11°C | 67°F19°C | 13 mph21 km/h from North | Mostly Clear | Partly Cloudy |
No
Low of 64°F18°C, High of 81°F27°CWind: 4 mph6 km/h
Precipitation: None