Temperatures in October
It's cool to moderate in October in Portsmouth with an average temperature of 16°C. Temperatures this month range from a low of 14°C to a high of 18°C. At night, you can expect temperatures between 9°C and 12°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Portsmouth in October. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of October
The month of October starts in Portsmouth with mild temperatures, averaging around 18°C during the day and nights close to 11°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-October
By mid-October, the average daytime temperature drops to around 16°C, with nights close to 11°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of October
By the end of October, the average daytime temperature in Portsmouth will be around 16°C, with nights close to 10°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in October
In October, there is an average of 93 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the South.
The average precipitation chance is 41% per day this month. The weather’s variable. There are also a few days with lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in October for Portsmouth. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Portsmouth in October |
London | ||
|---|---|---|---|
 Average Temperature |
16°C | 15°C | |
 High Temp |
18°C | 17°C | |
| Low Temp |
14°C | 13°C | |
 Total Precipitation |
93 mm | 115 mm | |
| Rainy Days |
13 days | 14 days | |
September
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is October a good time to visit Portsmouth?
Looking for sun and warm weather? Then October isn’t the best time to be in Portsmouth. The temperature is too low this month for a warm stay.
Temperature records for Portsmouth in October
With 22°C, Portsmouth hit the highest temperature in the last 10 years in October 2023. The lowest daytime temperature in this month was 7°C in 2018. The extreme night temperatures ranged from a low of 0°C to a high of 18°C.
Check out the climate of Portsmouth for all months and discover the best travel time
Curious about the climate in other parts of England? Check out the weather and climate in places like London, Edinburgh, Cornwall, or have a look at other destinations in England.
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Daily Temperature in October in Portsmouth
This chart shows the average daily temperatures, both day and night, for each day in October in Portsmouth, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in October in Portsmouth
The chart below shows the average daily precipitation in October for Portsmouth, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for October, you can expect around 13 days of rain in Portsmouth.
Daily UV Index in October in Portsmouth
This chart shows the average daily UV index in October in Portsmouth, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in October in Portsmouth Over the Years
This chart shows the average temperature in October in Portsmouth, measured in degrees Celsius, over the past years.
Total Precipitation in October in Portsmouth Over the Years
This chart shows the average precipitation in October in Portsmouth, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in October for Portsmouth
Click on a specific day in October for detailed info on the typical weather on that day in Portsmouth. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in October in Portsmouth
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Average Weather in Portsmouth by Month
Click on a month below to see detailed weather info for Portsmouth. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Portsmouth for all months at once
