Weekend Weather Forecast - Southampton

Weekend weather in Southampton. Saturday high 21°C (70°F). Sunday high 22°C (72°F).

Weekend Hourly Forecast

Fri·11 Sep
··
0:00
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00

Temperature · peaks at +22°C

48-Hour Weekend Forecast Chart

··
Fri11 Sep
Sat12 Sep
Sun13 Sep
Night
Morning
Day
Evening
Night
Morning
Day
Evening
Night
Morning
Day
Evening

Temperature · peaks at +19°C

Weekend Activity Outlook

Travel / Drive
Rating
Fair
Reason
Best window: Evening — allow extra time
Outdoor Sports
Rating
Poor
Reason
Wet field — matches likely cancelled
Home / Laundry
Rating
Poor
Reason
Rain will prevent outdoor drying
Outdoor Events
Rating
Poor
Reason
Venue should have indoor backup ready

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Southampton is forecast to reach a high of 21°C this weekend, with an overnight low around 12°C. That's 1° above the long-term average high of 20°C for this time of year. It continues a recent pattern — 24 of the last 28 days with published data have run warmer than normal. Expect little chance of rain (8% probability) and moderate breezes averaging 21 km/h. Air quality is currently good (AQI 23), with no notable outdoor health concerns.

Today vs Normal

22°C+2° above normal

The long-term average high for today is 20°C.

24 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

2026-08-28: 24°C24°2026-08-29: 20°C20°2026-08-30: 22°C22°2026-08-31: 23°C23°2026-09-01: 23°C23°2026-09-02: 21°C21°2026-09-03: 24°C24°2026-09-04: 22°C22°2026-09-05: 23°C23°2026-09-06: 26°C26°2026-09-07: 23°C23°2026-09-08: 20°C20°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.