Portsmouth, United Kingdom Weather

  1. Portsmouth, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Portsmouth over the next 12 hours
  7. Temperature and possibility of rain in Portsmouth in the coming days
  8. Rainfall in Portsmouth in the coming days
  9. Portsmouth Weather Summary
  10. Weather averages by month
  11. Portsmouth's weather
  12. Frequently asked questions
  13. Comments
Portsmouth, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
11°C
51.8°F
°C °F

Condition: Partly Cloudy

Pressure: 1,021 hPa

Feel like: 10 °C

Temperature: 11°C

Cloud: 62%

Humidity: 73%

Wind: NE - 4 km/h

Visibility: 11.74 km

Weather forecast

Sun
08 Nov
5°C / 11°C
Partly Cloudy
Mon
09 Nov
4°C / 11°C
Overcast
Tue
10 Nov
6°C / 11°C
Drizzle
Wed
11 Nov
11°C / 13°C
Moderate Drizzle
Thu
12 Nov
8°C / 11°C
Drizzle Dense Intensity
Hourly forecast today:
16:00 PM
6° / 11°
6° / 11°
Partly Cloudy
73% 10 km/h
17:00 PM
7° / 10°
7° / 10°
Clear Sky
81% 3 km/h
18:00 PM
6° / 10°
6° / 10°
Partly Cloudy
79% 9 km/h
19:00 PM
6° / 10°
6° / 10°
Overcast
79% 6 km/h
20:00 PM
6° / 10°
6° / 10°
Overcast
79% 5 km/h
21:00 PM
6° / 10°
6° / 10°
Overcast
76% 9 km/h
22:00 PM
6° / 9°
6° / 9°
Partly Cloudy
82% 7 km/h
23:00 PM
6° / 9°
6° / 9°
Partly Cloudy
84% 4 km/h
00:00 AM
6° / 8°
6° / 8°
Mainly Clear
85% 5 km/h
01:00 AM
6° / 8°
6° / 8°
Partly Cloudy
88% 3 km/h
02:00 AM
6° / 7°
6° / 7°
Clear Sky
90% 5 km/h

30 Day Averages and Extremes

  • Average high 11.1°C
  • Average low 6.63°C
  • Hottest day 16°C (24 October 2026)
  • Coldest day 0°C (21 November 2026)
  • Average humidity 75.9%
  • Days with precipitation 19 days
  • Highest precipitation 65 mm (24 October 2026)

Yesterday's Data

  • Max: 12°C
  • Min: 8°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Portsmouth over the next 12 hours

Temperature and possibility of rain in Portsmouth in the coming days

Rainfall in Portsmouth in the coming days

Portsmouth Climate Summary

Portsmouth features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.99ºC (53.58ºF), which is about 1.24% higher than the national average for United Kingdom. Annually, the city experiences approximately 81.04 millimeters (3.19 inches) of rainfall, spread across 148.63 rainy days, accounting for 40.72% of the year.

Longitude 50.8197675
Latitude -1.0879769
Yearly high temperature 13.5ºC (56.3ºF)
Yearly low temperature 9.07ºC (48.33ºF)
Hottest month July 19.55ºC (67.19ºF)
Coldest month January 4.66ºC (40.39ºF)
Yearly precip 81.04mm (3.19in)
Days with rainfall 148.63 days (40.72%)
Driest month April (80.01%)
Wettest month October (80.96%)

Weather averages by month

Month High / Low (°C) Rain
January 7.94° / 4.66° 13.91 days
February 7.89° / 4.49° 12.18 days
March 9.76° / 5.29° 10.27 days
April 12.19° / 6.77° 9.82 days
May 14.55° / 9.19° 11.27 days
June 17.27° / 11.9° 11.45 days
July 19.55° / 14.04° 13.0 days
August 19.41° / 14.44° 12.73 days
September 17.98° / 13.16° 10.18 days
October 14.99° / 11.07° 14.27 days
November 11.29° / 7.97° 15.73 days
December 9.13° / 5.89° 13.82 days

Portsmouth's weather

Frequently asked questions

1. What is the hottest month in Portsmouth?

July has the highest average monthly temperature (daily mean of 19.55ºC) and January are the coolest (daily mean of 4.66ºC).

2. What should I wear in Portsmouth today?

For today's cool weather in Portsmouth, with temperatures between 8ºC to 11ºC (46.4ºF to 51.8ºF), you should consider wearing:
- Light scarf or wrap
- Long-sleeve top or shirt
- Knit hat (optional for cooler mornings)
- Cotton socks

Temperature

Early
6°C / 9°C
Morning
6°C / 9°C
Afternoon
6°C / 11°C
Evening
6°C / 10°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 452
  • CO 221
  • NH3 0
  • NO2 20
  • O3 39
  • PM10 15
  • PM25 14
  • SO2 1
  • CH4 1,457

Sunrise / Sunset

07:06
16:29