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: 1,008 hPa

Feel like: 4 °C

Temperature: 8°C

Cloud: 100%

Humidity: 71%

Wind: ENE - 19 km/h

Visibility: 20.24 km

Weather forecast

Wed
11 Nov
8°C / 10°C
Slight Rain
Thu
12 Nov
3°C / 9°C
Overcast
Fri
13 Nov
1°C / 7°C
Partly Cloudy
Sat
14 Nov
0°C / 10°C
Overcast
Sun
15 Nov
6°C / 13°C
Drizzle
Hourly forecast today:
10:00 AM
3° / 8°
3° / 8°
Overcast
71% 36 km/h
11:00 AM
4° / 9°
4° / 9°
Overcast
71% 36 km/h
12:00 PM
4° / 9°
4° / 9°
Overcast
71% 36 km/h
13:00 PM
5° / 9°
5° / 9°
Drizzle
76% 35 km/h
14:00 PM
6° / 8°
6° / 8°
Moderate Drizzle
85% 34 km/h
15:00 PM
6° / 8°
6° / 8°
Drizzle
89% 32 km/h
16:00 PM
7° / 8°
7° / 8°
Drizzle Dense Intensity
93% 30 km/h
17:00 PM
7° / 8°
7° / 8°
Drizzle
94% 34 km/h
18:00 PM
7° / 8°
7° / 8°
Moderate Drizzle
95% 31 km/h
19:00 PM
7° / 8°
7° / 8°
Slight Rain
95% 32 km/h
20:00 PM
7° / 8°
7° / 8°
Drizzle Dense Intensity
95% 33 km/h

30 Day Averages and Extremes

  • Average high 10.87°C
  • Average low 6.47°C
  • Hottest day 16°C (27 October 2026)
  • Coldest day 0°C (14 November 2026)
  • Average humidity 74.9%
  • Days with precipitation 16 days
  • Highest precipitation 49 mm (11 November 2026)

Yesterday's Data

  • Max: 9°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 cold weather in Portsmouth, with temperatures ranging from 6ºC to 9ºC (42.8ºF to 48.2ºF), you should wear:
- Closed-toe shoes or boots
- Warm jacket or medium-weight coat
- Long pants (jeans or other thick materials)
- Scarf to protect the neck area

Temperature

Early
4°C / 6°C
Morning
3°C / 8°C
Afternoon
6°C / 8°C
Evening
7°C / 8°C

Air quality

Moderate

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

  • CO2 458
  • CO 215
  • NH3 0
  • NO2 14
  • O3 50
  • PM10 18
  • PM25 15
  • SO2 1
  • CH4 1,472

Sunrise / Sunset

07:11
16:24