Portsmouth weather — 10-day forecast
Temperature, rain, wind and feels-like in Portsmouth, hour by hour and over 10 days, with the seasonal normal for context.
Now
Reading from 23:00 · NOAA HRRR model
23 °C
Overcast
Feels like 26 °C
Next 12 h
- 2323°14 %
- 0022°15 %
- 0122°15 %
- 0222°15 %
- 0323°14 %
- 0422°15 %
- 0522°
- 05:42Sunrise
- 0622°
- 0722°10 %
- 0823°
- 0925°
- 1024°
- 1126°
↓ 22°07:00↑ 26°11:00
- Humidity
- 97 %
- Dew point
- 22 °C
- Gusts
- 15.6 km/h
- Clouds
- 100 %
- Pressure
- 1,015 hPa
- Storm
- likely
Grid point 1.6 km away · 3.0 km grid · elevation 6 m
Air quality
The European air-quality index for the city, and the pollutants that set it.
Index set by Ozone
- Ozone
- 77.8µg/m³
- PM2.5
- 6.3µg/m³
- PM10
- 6.6µg/m³
- Nitrogen dioxide
- 4.1µg/m³
- Sulphur dioxide
- 0.8µg/m³
- Carbon monoxide
- 224.0µg/m³
- Dust (AOD)
- 0.00
Generated using Copernicus Atmosphere Monitoring Service information
Hour by hour
Step-by-step detail: temperature, wind, cloud cover and ultraviolet.
10 days
Each day's extremes and the chance of rain, out to the end of the run.
Rain probability (> 1 mm): 50 ECMWF ensemble members.
Today
Partly cloudy
24°
23°
Sat
Light rain74 %
26°
22°
Sun
Mainly clear74 %
32°
20°
Mon
Mainly clear20 %
31°
18°
Tue
Showers32 %
27°
21°
Wed
Overcast32 %
26°
19°
Thu
Mainly clear
28°
19°
Fri
Light drizzle1 mm
29°
20°
Sat
Clear sky
21°
18°
Sun
Mainly clear
20°
18°
Sun and UV
Sunrise, sunset, day length and ultraviolet intensity.
- Sunrise
- 05:41
- Daylight
- 14 h 16
- Sunset
- 19:57
Radiation · 0.0 MJ/m²
Sea state
Sea state at the marine grid point closest to the city.
Significant height: the mean of the highest third of waves. Individual waves reach about twice it.
Data: ECMWF
Today in Portsmouth the mean temperature will be 23.1 °C — +2.3 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)
Nearby cities
The climate around Portsmouth