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Weather in Portsmouth for October 2026

Your guide to Portsmouth weather in October - trends and predictions

    Official Weather Alert ⚠️

  • Flood Warning: South Hayling and South Eastoke seafront - See hour by hour.

    • Temperatures

  • Until now, October 2026 in Portsmouth has been nearly identical to the historical average, with a temperature of 16 °C (showing only a slight deviation of 0.2 °C).

  • The forecast for the upcoming days in Portsmouth predicts a temperature of 15 °C, which is slightly above the historical average.

  • In general, the average temperature in Portsmouth at the beginning of October is 16.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14 °C by the end of October.

    • Rain 🌧️

  • The climate of Portsmouth in October is notably wet, with an average of 14 rainy days, and a total of 133.1 mm of precipitation.

    • More

  • Is October a good time to visit Portsmouth? check out the best time to travel to Portsmouth page.

  • ✨ Is October a good time to visit Portsmouth? – Ask the AI Weatherman

Average dry days
17
Dry days
Average rainy days
14
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/12°
Temperatures
Average wind speed
31 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Portsmouth Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
17°
2
Patchy rain possible
17°
3
Light rain
17°
4
Patchy rain possible
16°
5
Patchy rain possible
17°
6
Patchy rain possible
17°
7
Light rain
17°
8
Light rain
16°
9
Patchy rain possible
18°
10
Sunny
16°
11
Light rain shower
15°
12
Patchy rain possible
17°
13
Light rain
17°
14
Patchy rain possible
15°
15
Overcast
15°
16
Light rain
15°
17
Overcast
15°
18
Light rain
15°
19
Light rain
15°
20
Moderate rain
15°
21
Light rain
15°
22
Light rain
15°
23
Moderate rain
15°
24
Moderate rain
15°
25
Light rain
13°
26
Light rain
13°
27
Weather Alert Light rain
17°
28
Weather Alert Sunny
15°
29
Weather Alert Overcast
14°
30
Weather Alert Overcast
14°
31
Weather Alert Cloudy
15°

Temperatures trend during October in Portsmouth

See the weather trend as well as the moving average line

October weather in Portsmouth day by day

Click on a date for more information
September November
Date Weather Temperatures Rain UV More
1 Oct. Patchy rain possible
Patchy rain possible
 17° /14° 0.2 mm 3.3
2 Oct. Patchy rain possible
Patchy rain possible
 17° /15° 1 mm 3
3 Oct. Light rain
Light rain
 17° /13° 2.5 mm 3
4 Oct. Patchy rain possible
Patchy rain possible
 16° /12° 2.4 mm 3
5 Oct. Patchy rain possible
Patchy rain possible
 17° /13° 0.1 mm 2.9
6 Oct. Patchy rain possible
Patchy rain possible
 17° /13° 1.6 mm 2.9
7 Oct. Light rain
Light rain
 17° /13° 4.5 mm 2.8
8 Oct. Light rain
Light rain
 16° /13° 2.5 mm 2.7
9 Oct. Patchy rain possible
Patchy rain possible
 18° /13° 1.2 mm 2.7
10 Oct. Sunny
Sunny
 16° /12° 0.8 mm 2.6
11 Oct. Light rain shower
Light rain shower
 15° /12° 1.9 mm 2.5
12 Oct. Patchy rain possible
Patchy rain possible
 17° /13° 1.9 mm 2.5
13 Oct. Light rain
Light rain
 17° /12° 4.8 mm 2.4
14 Oct. Patchy rain possible
Patchy rain possible
 15° /11° 0.2 mm 2.3
15 Oct. Overcast
Overcast
 15° /11° 0.5 mm 2.3
16 Oct. Light rain
Light rain
 15° /11° 4.3 mm 2.2
17 Oct. Overcast
Overcast
 15° /11° 0 mm 2.1
18 Oct. Light rain
Light rain
 15° /12° 4 mm 2.1
19 Oct. Light rain
Light rain
 15° /13° 9.8 mm 2
20 Oct. Moderate rain
Moderate rain
 15° /12° 23.6 mm 2
21 Oct. Light rain
Light rain
 15° /11° 2.7 mm 1.9
22 Oct. Light rain
Light rain
 15° /11° 5 mm 1.9
23 Oct. Moderate rain
Moderate rain
 15° /11° 12.6 mm 1.8
24 Oct. Moderate rain
Moderate rain
 15° /11° 10.2 mm 1.8
25 Oct. Light rain
Light rain
 13° /10° 7.5 mm 1.7
26 Oct. Light rain
Light rain
 13° /8° 3.3 mm 1.7
27 Oct. Light rain
Light rain
 17° /12° 4 mm 1.5
28 Oct. Sunny
Sunny
 15° /12° 0 mm 1.5
29 Oct. Overcast
Overcast
 14° /13° 0.2 mm 1.6
30 Oct. Overcast
Overcast
 14° /13° 0 mm 1.4
31 Oct. Cloudy
Cloudy
 15° /12° 0 mm 4
Next
Important Notice
Our weather forecast for Portsmouth in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Portsmouth forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Portsmouth in October - FAQ

What are the expected maximum and minimum temperatures in Portsmouth during October?
During October, expect a variety of temperatures with highs around 15° and lows near 12°, suitable for diverse activities and preferences.

How much rainfall should be expected in Portsmouth during October?
Significant rainfall exceeding 133.1 mm is expected in Portsmouth during October, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Portsmouth during October?
The average wind speed in Portsmouth during October is 31 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in Portsmouth

Explore the daily rainfall trends and prepare for Portsmouths October weather 💧
Typically, Portsmouth has 14 rainy days in October with a total of 133.1 mm of rainfall.
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Get accurate weather forecasts for Portsmouth, located at latitude 50.799 and longitude -1.091. Stay updated with localized weather information tailored for Portsmouth.

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