No
you don't need a jacket based on the weather in Portsmouth, UK 1 second ago
73°F23°C & Mostly Cloudy
Wind is 9 mph15 km/h from the East, gusting to 17 mph28 km/h
| August 18 | ||||
| 12pm | 73°F23°C | 9 mph15 km/h East | Cloudy | |
| 1pm | 73°F23°C | 10 mph15 km/h East | Cloudy | |
| 2pm | 72°F22°C | 9 mph14 km/h East | Cloudy | |
| 3pm | 71°F22°C | 8 mph13 km/h East | Cloudy | |
| 4pm | 69°F20°C | 10 mph16 km/h Northeast | Cloudy | |
| 5pm | 67°F19°C | 11 mph18 km/h Northeast | Cloudy | |
| 6pm | 65°F19°C | 11 mph18 km/h Northeast | Cloudy | |
| 7pm | 64°F18°C | 11 mph17 km/h Northeast | Cloudy | |
| 8pm | 64°F18°C | 11 mph17 km/h Northeast | Cloudy | |
| 9pm | 63°F17°C | 10 mph17 km/h Northeast | Cloudy | |
| 10pm | 63°F17°C | 11 mph17 km/h Northeast | Cloudy | |
| 11pm | 63°F17°C | 10 mph16 km/h Northeast | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 17 | 63°F17°C | 74°F23°C | 8 mph13 km/h from East | Mostly Cloudy | Cloudy |
| August 18 | 62°F17°C | 76°F25°C | 11 mph17 km/h from Northeast | Cloudy | Cloudy |
| August 19 | 59°F15°C | 71°F22°C | 13 mph21 km/h from Northeast | Mostly Cloudy | Mostly Clear |
| August 20 | 57°F14°C | 71°F21°C | 10 mph16 km/h from Northeast | Mostly Clear | Mostly Clear |
| August 21 | 54°F12°C | 68°F20°C | 7 mph11 km/h from South | Mostly Clear | Mostly Clear |
| August 22 | 57°F14°C | 71°F22°C | 5 mph8 km/h from South | Partly Cloudy | Partly Cloudy |
| August 23 | 59°F15°C | 69°F21°C | 9 mph14 km/h from Southeast | Mostly Clear | Mostly Clear |
No
Low of 62°F17°C, High of 76°F25°CWind: 11 mph17 km/h
Precipitation: 8% rain