14-day forecast Updated 23:21
Mon · Today · 14 Sep
Showers
21°
19°
0.8 mm
⌄
Wind 16 mph SW
Gusts 21 mph
UV index 5 – Moderate
Chance of rain 55%
Sunrise 06:38
Sunset 19:21
Tue · Tomorrow · 15 Sep
Sunny
21°
15°
0.1 mm
⌄
Wind 22 mph NW
Gusts 24 mph
UV index 4 – Moderate
Chance of rain 18%
Sunrise 06:39
Sunset 19:19
Wednesday · 16 Sep
Sunny
18°
13°
0.2 mm
⌄
Wind 15 mph W
Gusts 23 mph
UV index 4 – Moderate
Chance of rain 20%
Sunrise 06:41
Sunset 19:16
Thursday · 17 Sep
Showers
19°
14°
1.1 mm
⌄
Wind 21 mph W
Gusts 26 mph
UV index 4 – Moderate
Chance of rain 59%
Sunrise 06:43
Sunset 19:14
Friday · 18 Sep
Cloudy
18°
12°
0.1 mm
⌄
Wind 30 mph SW
Gusts 39 mph
UV index 4 – Moderate
Chance of rain 24%
Sunrise 06:44
Sunset 19:12
Saturday · 19 Sep
Sunny
19°
15°
0.5 mm
⌄
Wind 26 mph W
Gusts 36 mph
UV index 5 – Moderate
Chance of rain 36%
Sunrise 06:46
Sunset 19:10
Sunday · 20 Sep
Sunny
19°
14°
7%
⌄
Wind 13 mph SW
Gusts 17 mph
UV index 5 – Moderate
Chance of rain 7%
Sunrise 06:47
Sunset 19:07
Monday · 21 Sep
Sunny
22°
15°
10%
⌄
Wind 18 mph N
Gusts 26 mph
UV index 6 – High
Chance of rain 10%
Sunrise 06:49
Sunset 19:05
Tuesday · 22 Sep
Cloudy
18°
11°
9%
⌄
Wind 15 mph N
Gusts 24 mph
UV index 5 – Moderate
Chance of rain 9%
Sunrise 06:50
Sunset 19:03
Wednesday · 23 Sep
Cloudy
19°
12°
13%
⌄
Wind 13 mph N
Gusts 23 mph
UV index 5 – Moderate
Chance of rain 13%
Sunrise 06:52
Sunset 19:01
Thursday · 24 Sep
Cloudy
18°
13°
7%
⌄
Wind 11 mph NE
Gusts 16 mph
UV index 5 – Moderate
Chance of rain 7%
Sunrise 06:53
Sunset 18:58
Friday · 25 Sep
Sunny
20°
14°
8%
⌄
Wind 19 mph E
Gusts 26 mph
UV index 5 – Moderate
Chance of rain 8%
Sunrise 06:55
Sunset 18:56
Saturday · 26 Sep
Sunny
18°
14°
7%
⌄
Wind 16 mph E
Gusts 24 mph
UV index 5 – Moderate
Chance of rain 7%
Sunrise 06:57
Sunset 18:54
Sunday · 27 Sep
Sunny
19°
13°
4%
⌄
Wind 20 mph NW
Gusts 28 mph
UV index 5 – Moderate
Chance of rain 4%
Sunrise 06:58
Sunset 18:52
Conditions & indices
Wind
12 mph SW
Gusts 20 mph
UV index
5 — Moderate
Max today
Air quality
Low
DAQI 1 / 10
Visibility
6 mi
Good visibility
🗺️ Portsmouth and what is nearby
Forecast day by day — press play
▶
Markers show the daytime high for the selected day. Tap a marker for Portsmouth detail; two fingers to move and zoom the map.
Pollen — Portsmouth
Sunrise 06:38
Sunset 19:21
Day length 12h 43m
Moonrise 10:57
Moonset 20:06
Moon phase 🌔 Waxing Crescent
Latitude 50.8198°N
Longitude -1.0880°E
West Wittering (14km) 19°
Bognor Regis (29km) 19°
Bournemouth Beach (56km) 18°
Sandbanks, Poole (61km) 18°
Studland Bay (64km) 17°
Swanage (65km) 17°
🌤️ Dry over the next 90 minutes
Now +30 +60 +90 min
Rain minute by minute · UKV nowcast
Today’s index derived from today’s forecast
Drying weather
Poor
Hang the washing out
BBQ weather
Poor
Barbecue outdoors
Running weather
Poor
Go for a run
Beer garden
OK
Drinks outside
Other places in the same county / region
Sources · Monday 14 September
Weather data for Portsmouth from official sources
The forecast is compiled from global weather models (14-day forecast, UV, air quality, pollen and warnings) together with the UK Met Office UKV model . Data updates every hour, warnings every 15 minutes. Lat 50.8198°N, lon -1.0880°E.