Temperatures in March
It's cool in March in Portsmouth with an average temperature of 14°C. Temperatures this month range from a low of 8°C to a high of 21°C. At night, you can expect temperatures between -4°C and 7°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Portsmouth in March. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of March
The month of March starts in Portsmouth with cool temperatures, averaging around 13°C during the day and nights close to 1°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-March
By mid-March, the average daytime temperature stays the same at 13°C, with nights close to 2°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of March
By the end of March, the average daytime temperature in Portsmouth will be around 17°C, with nights close to 5°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in March
In March, there is an average of 111 mm of precipitation, spread over 11 days. Of the total precipitation, about 9,5 cm falls as snow in March. The wind speed is around 3 Bft, mostly coming from the Southwest.
The average precipitation chance is 34% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in March 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 March |
London | ||
|---|---|---|---|
 Average Temperature |
14°C | 11°C | |
 High Temp |
21°C | 14°C | |
| Low Temp |
8°C | 8°C | |
 Total Precipitation |
111 mm | 55 mm | |
| Rainy Days |
11 days | 9 days | |
 Total Snowfall |
9,5 cm | 1,7 cm | |
| Snowy Days |
4 days | 1 day | |
February
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is March a good time to visit Portsmouth?
After some sun? Then March isn’t the best time to be in Portsmouth. There’s too much chance of rain this month.
Temperature records for Portsmouth in March
With 30°C, Portsmouth hit the highest temperature in the last 10 years in March 2020. The lowest daytime temperature in this month was -5°C in 2014. The extreme night temperatures ranged from a low of -17°C to a high of 18°C.
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Daily Temperature in March in Portsmouth
This chart shows the average daily temperatures, both day and night, for each day in March 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 March in Portsmouth
The chart below shows the average daily precipitation in March 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 March, you can expect around 11 days of rain in Portsmouth.
Daily Snowfall in March in Portsmouth
This chart shows the average daily snowfall in March in Portsmouth, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in March.
Daily UV Index in March in Portsmouth
This chart shows the average daily UV index in March 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 March in Portsmouth Over the Years
This chart shows the average temperature in March in Portsmouth, measured in degrees Celsius, over the past years.
Total Precipitation in March in Portsmouth Over the Years
This chart shows the average precipitation in March in Portsmouth, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in March in Portsmouth per year
This chart shows the average snowfall in March in Portsmouth, measured in centimetres, over the past years.
Daily climate in March for Portsmouth
Click on a specific day in March 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 March 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
