Portsmouth
October
Weather in Portsmouth for October 2025
Your guide to Portsmouth weather in October - trends and predictions
In general, the average temperature in Portsmouth at the beginning of October is 16.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14.4 °C by the end of October.
Expect significant rainfall in Portsmouth during October, with an average of 19 rainy days.
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12
Dry days
19
Rainy days
0
Snow days
16°/13°
Temperatures
33 km/h
Avg max wind
79 %
Avg humidity
Portsmouth in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2 17° | 3  16° | 4 15° | 5 16° | ||
| 6  17° | 7  18° | 8 17° | 9 18° | 10 16° | 11 15° | 12 17° |
| 13 16° | 14 13° | 15  14° | 16 15° | 17 16° | 18  16° | 19 16° |
| 20 16° | 21 15° | 22 15° | 23 15° | 24 15° | 25 14° | 26 14° |
| 27 15° | 28 15° | 29 14° | 30 15° | 31 14° |
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Temperatures trend during October in Portsmouth
See the weather trend as well as the moving average line
October weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. | Cloudy | 17° /14° | 0.1 mm | 4 | |
| 2 Oct. | Cloudy | 17° /14° | 2 mm | 4 | |
| 3 Oct. | Patchy rain possible | 16° /12° | 0.6 mm | 4 | |
| 4 Oct. | Patchy rain possible | 15° /12° | 0.1 mm | 4 | |
| 5 Oct. | Patchy rain possible | 16° /13° | 0.1 mm | 4 | |
| 6 Oct. | Partly cloudy | 17° /14° | 3.2 mm | 5 | |
| 7 Oct. | Sunny | 18° /14° | 5.3 mm | 5 | |
| 8 Oct. | Partly cloudy | 17° /15° | 4.9 mm | 5 | |
| 9 Oct. | Cloudy | 18° /13° | 1.3 mm | 5 | |
| 10 Oct. | Sunny | 16° /12° | 1.6 mm | 5 | |
| 11 Oct. | Light rain shower | 15° /11° | 3.8 mm | 4 | |
| 12 Oct. | Patchy rain possible | 17° /13° | 2.6 mm | 4 | |
| 13 Oct. | Light rain shower | 16° /10° | 9 mm | 4 | |
| 14 Oct. | Patchy rain possible | 13° /9° | 0.2 mm | 3 | |
| 15 Oct. | Overcast | 14° /9° | 0.5 mm | 4 | |
| 16 Oct. | Patchy rain possible | 15° /11° | 7.7 mm | 4 | |
| 17 Oct. | Partly cloudy | 16° /12° | 0 mm | 5 | |
| 18 Oct. | Moderate rain | 16° /13° | 7.8 mm | 4 | |
| 19 Oct. | Light rain shower | 16° /13° | 9.8 mm | 4 | |
| 20 Oct. | Light rain shower | 16° /12° | 24.4 mm | 4 | |
| 21 Oct. | Light rain shower | 15° /11° | 1.4 mm | 4 | |
| 22 Oct. | Patchy rain possible | 15° /10° | 0.9 mm | 4 | |
| 23 Oct. | Light rain shower | 15° /12° | 6.7 mm | 4 | |
| 24 Oct. | Light rain shower | 15° /12° | 7.8 mm | 4 | |
| 25 Oct. | Light rain shower | 14° /10° | 14.9 mm | 4 | |
| 26 Oct. | Light rain shower | 14° /9° | 4.5 mm | 3 | |
| 27 Oct. | Light rain shower | 15° /12° | 9.9 mm | 4 | |
| 28 Oct. | Light rain shower | 15° /13° | 6.3 mm | 4 | |
| 29 Oct. | Light rain shower | 14° /13° | 5.3 mm | 4 | |
| 30 Oct. | Light rain shower | 15° /12° | 3.4 mm | 4 | |
| 31 Oct. | Light rain shower | 14° /11° | 6.2 mm | 4 | |
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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.
Portsmouth in October - FAQ
What are the expected maximum and minimum temperatures in Portsmouth during October?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Portsmouth during October?
Significant rainfall exceeding 220.1 mm is expected in Portsmouth during October, occurring over more than 19 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 33 km/h, suggesting breezy to windy conditions, depending on your activities.
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