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:
8°C
46.4°F
°C °F

Condition: Overcast

Pressure: 1,022 hPa

Feel like: 5 °C

Temperature: 8°C

Cloud: 99%

Humidity: 90%

Wind: ENE - 11 km/h

Visibility: 18.36 km

Weather forecast

Sat
07 Nov
7°C / 11°C
Drizzle
Sun
08 Nov
6°C / 10°C
Overcast
Mon
09 Nov
6°C / 11°C
Overcast
Tue
10 Nov
8°C / 11°C
Moderate Drizzle
Wed
11 Nov
10°C / 13°C
Moderate Drizzle
Hourly forecast today:
05:00 AM
6° / 8°
6° / 8°
Overcast
90% 22 km/h
06:00 AM
6° / 8°
6° / 8°
Overcast
90% 21 km/h
07:00 AM
6° / 8°
6° / 8°
Overcast
90% 20 km/h
08:00 AM
6° / 8°
6° / 8°
Overcast
89% 21 km/h
09:00 AM
6° / 9°
6° / 9°
Overcast
85% 24 km/h
10:00 AM
7° / 9°
7° / 9°
Overcast
82% 26 km/h
11:00 AM
7° / 11°
7° / 11°
Clear Sky
78% 22 km/h
12:00 PM
7° / 11°
7° / 11°
Mainly Clear
77% 21 km/h
13:00 PM
8° / 12°
8° / 12°
Overcast
76% 17 km/h
14:00 PM
8° / 12°
8° / 12°
Overcast
76% 17 km/h
15:00 PM
8° / 12°
8° / 12°
Overcast
78% 13 km/h

30 Day Averages and Extremes

  • Average high 11.3°C
  • Average low 6.73°C
  • Hottest day 16°C (24 October 2026)
  • Coldest day 0°C (18 November 2026)
  • Average humidity 75.7%
  • Days with precipitation 21 days
  • Highest precipitation 68 mm (23 October 2026)

Yesterday's Data

  • Max: 10°C
  • Min: 7°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 9ºC to 12ºC (48.2ºF to 53.6ºF), you should consider wearing:
- Thin gloves (optional for early mornings or late evenings)
- Cotton socks
- Knit hat (optional for cooler mornings)
- Comfortable pants or jeans

Temperature

Early
6°C / 8°C
Morning
6°C / 9°C
Afternoon
8°C / 12°C
Evening
8°C / 9°C

Air quality

Moderate

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

  • CO2 462
  • CO 240
  • NH3 0
  • NO2 20
  • O3 19
  • PM10 26
  • PM25 24
  • SO2 2
  • CH4 1,513

Sunrise / Sunset

07:04
16:30