March Weather in Portimao, Portugal - 2026

Portimao is the second largest city of Algarve and is located in the western part of the region. The city is ideal for visitors who prefer a relaxed atmosphere, but a place with a lot of permanent residents. The main attractive features of the town are its historic buildings due to its former industrial relevance and the interesting gastronomy. Portimao cannot be classified as an extraordinary location but it can give you an authentic Portugal experience. 

Weather March 2026 in Portimao Portugal:

Generally, March in Portimao will be slightly on the colder side, with an average temperature of around 66°F / 19°C. During this month the air is quite dry. You can expect around 8 rainy days, with on average 1.9 inches / 48 mm of rain during the month of March.
Comfortable with dry air with slightly cold temperatures
(CC BY 2.0) by sky_hlv

March weather in Portimao Portugal

To get a good overview of the type of weather you can expect in March in Portimao, we will look at the day and night temperature, minimum and maximum water temperature, and if March is comfortable or humid

Generally, March in Portimao will be slightly on the colder side. Historical data shows that you can expect an average temperature of around 66°F / 19°C. During this month the air is quite dry. During the night, it will cool down to around 48°F / 9°C.

Portimao has rainy days in March. You can expect around 8 rainy days, with on average 1.9 inches / 48 mm of rain during the whole month.

Average temperature
Average Sea temperature
Wintersun Comfort grade and huricane risk

The forecast for March 2026 is based on historical data and are averages. They will give a good indication what you can expect, but the daily temperature and rain will fluctuate during the month.

March weather in Portimao Portugal in more detail

To get a better feeling for the type of weather, you can expect in March in Portimao, we will look at the temperature, rain, wind, humidity, water temperature, and sun and clouds

- What will the temperature be in Portimao in March

Generally, you can expect in March an average temperature of 66°F / 19°C during the day and an average of 48°F / 9°C during the night. In March, during the warmest part of the afternoon, the temperature can often get as high as 77°F / 25°C, and at the end of the night, it can get as low as 33°F / 1°C.

When looking at the whole year, January is the coldest month, with an average temperature of around 60°F / 16°C. July and August are the hottest months, with an average temperature of around 89°F / 32°C. When comparing March with the temperature in the month before and after, this is almost equal to February, which sees an average maximum temperature of around 62°F / 17°C. And almost equal to April, which sees an average maximum temperature of around 68°F / 20°C.

Day and night temperature variation for Portimao during the year.
Day and night temperature variation for Portimao during the year.

But average temperatures only tell half of the story. It is also good to check the maximum and minimum temperatures. When looking at the whole year, July is the hottest month, with a temperature of around 102°F / 39°C. January is the coldest month, with a temperature of around 68°F / 20°C. When comparing March with the temperature in the month before and after, this is slightly higher than February, which sees an average maximum temperature of around 69°F / 21°C. And slightly less than April, which sees an average maximum temperature of around 82°F / 28°C.

In the following graph, you can see how many cold and hot days you can expect in Portimao each month:

Day and night temperature variation for Portimao during the year.
Day and night temperature variation for Portimao during the year.

- Can you expect rain in March in Portimao?

Generally, you can expect about 8 rain days in March, with on average 1.9 inches / 48 mm of rain.

When looking at the whole year, July and August are the driest months, with an average rainfall of around 0.1 inches / 2 mm. December is the wettest month, with an average rainfall of around 3.8 inches / 96 mmmm. When comparing March with the month before and after, this is almost equal to February, which sees around 1.9 inches / 49 mm of rain. And less than April, which sees around 2.2 inches / 56 mm of rain

Rain days for Portimao during the year.
Rain days for Portimao during the year.

If we look at the number of days with rain, July is the month with the least amount of rain days with an average of between 0 and 1 days. December is the month with the most rain days with around 10 days. When comparing March with the month before and after, this is almost equal to February, which sees an average of between 8 and 9 days of rain. And almost equal to April, which sees an average of between 8 and 9 days of rain

- What will the water temperature be in Portimao for March

You can expect in March, the water temperature for Portimao to be between 62°F / 17°C and 57°F / 14°C.

To compare the water temperature we will use the maximum water temperature. You can expect this temperature on a more sunny day, close to the shore, when the wind does not mix the relatively warmer and colder water.

August has the highest water temperature, with an average of between 71°F / 22°C and 73°F / 23°C. February and March And have the lowest water temperature, with around 62°F / 17°C. When comparing the water temperature from March with the month before and after, March has a water temperature equal to February, with a water temperature of around 62°F / 17°C. And almost equal to the water temperature from April, that is an average of between 64°F / 18°C and 66°F / 19°C.

Water temperature for Portimao during the year.
Water temperature for Portimao during the year.

- Can you expect in March a lot of sunny days in Portimao

Generally, you can expect around 10 sunny days in March and around 14 partly sunny days. The remaining days will be cloudy.

When looking at the whole year, July is the month with the highest number of sunny days, with around 16 sunny days. February is the month with the lowest number of sunny days, with an average of between 8 and 9 sunny days. When comparing March with the number of sunny days in the month before and after, it is almost equal to February, with an average of between 8 and 9 sunny days. And almost equal to April, with an average of between 8 and 9 sunny days

The number of sunny, partly sunny, and cloudy days for Portimao
The number of sunny, partly sunny, and cloudy days for Portimao

We have looked at the sunny days in Portimao. Let's also look at the cloudy or overcast days. December is the month with the highest number of cloudy days, with an average of between 9 and 10 cloudy days. July is the month with the lowest number of cloudy days, with around 0 cloudy days. When comparing March with the number of cloudy days in the month before and after, it is almost equal to February, with an average of between 7 and 8 cloudy days. And almost equal to April, with an average of between 6 and 7 cloudy days

- Will it be comfortable in March in Portimao?

Generally, March in Portimao will have dry air, and will feel very comfortable.

We use the humidity and temperature in Portimao to calculate the Wintersun Expert Comfort level for each month. The lower the Wintersun Expert Comfort level, the more comfortable it will be. Only for certain people, extremely dry air can feel slightly uncomfortable.

When looking at the whole year, January has the lowest humidity, with a Wintersun Expert comfort level of "comfortable" (very dry air). August has the highest humidity, with a Wintersun Expert comfort level of "comfortable" (not very humid). When comparing March with the month before and after, this is almost equal to February, which has a Wintersun Comfort level of "very comfortable" (dry air). And almost equal to April, which has a Wintersun Comfort level of "very comfortable" (low humidty)

Wintersun Expert Humidity / Comfort level for Portimao
Wintersun Expert Humidity / Comfort level for Portimao

What to do in Portimao Portugal in March

Portimao has plenty of places that one can visit during their stay. Here is a list of some of the most popular places in the city that one can visit.

  • Portimao Museum: A fascinating place for people who take particular interest in the city's industrial history, as the museum is full of interesting facts and archeological exhibits. You can find more information on their website. (www.museudeportimao.pt/)
  • Praia da Rocha: A great beach in the area when you can go for long walks and sunsets. Sunbathing is not advisable in winters but the scenic beauty of this beach definitely makes it worth the visit.
  • Local Mercado Municipal: Here you will find an excellent selection of seafood and fresh produce. The most commonly used market place in the area.
  • Igreja do Colégio: An old church with a dominating appearance and beautiful architecture. This historic building was built in the 17th century and survived the 1755 earthquake. The church also carries an interesting history.
  • Fortaleza de Santa Catarina: This historic landmark dates back to the 16th century and holds great relevance to the people of the city. You will be surprised to find some of the most beautiful panoramic views of the city from here.

Is it humid in Portimao Portugal in March?

A lot of people ask interested in the humidity or relative humidity for Portimao Portugal in March. But the real question they want to ask is not about humidity but the amount of moisture in the air. Or better, about comfort. Will it be comfortable in March in Portimao, or will high humidity make it uncomfortable.

To answer this question, we have to look at the dew point. Relative humidity can change a lot in Portimao during the day and night, as it changes when the amount of moisture changes and, but also when the temperature changes. It is a lot less reliable for comfort. Where the dew point only varies with the amount of moisture in the air.

Looking at the dew point, we can see that for the month of March, you can expect that Portimao will have dry air, and will feel very comfortable.

January is the month with the most comfort. It will have very dry air, and can feel somewhat uncomfortable for some people. But will be fine for most.. August is the most uncomfortable month. It will not be very humid, and will feel comfortable. In the graph, you can see that there is some difference between the most comfortable and most uncomfortable months

Humidity level for Portimao
Humidity level for Portimao

Is March a good time to go to Portimao Portugal?

Trying to answer the question of whether March is a good time to go to Portimao is not as easy as it first seems. Some people like colder weather, and others prefer a warmer climate. Some are fine with some humidity, and others are not. If your location has air conditioning, the night temperature is less important.

These are some examples. I will try to answer the question with a more generic person in mind. The more detailed information in this article should be enough to check further if this applies to you as well.

If we look at the average temperature for Portimao in March, we can see that it will be on slightly less than what most people like, but still ok for most. In March, you can expect it to be slightly on the colder side, with an average temperature of around 66°F / 19°C. Due to the dry air, it will feel very comfortable. During the night, it will be around 48°F / 9°C.

The number of overcast days is more than 5, but you can still the sun with around 10 sunny days and 14 partly sunny days.

The last aspect we will look at is rain. You can expect around 8 rainy days, with on average 1.9 inches / 48 mm of rain during March. More then 5 days rain per month makes the chance higher you will see some rain during a shorter stay. But a day with rain does not mean a day you can not enjoy.

We have looked at the average day temperature, the night temperature, humidity, the number of overcast days, and the rain. We think that March in Portimao Portugal is not the most optimal destination. But that doesn't mean it is not a good time for you to go. As said before, each visitor has their own preferences when it comes to the weather.

Does it rain all day in Portimao Portugal in March?

In Portimao, it does not rain all day in March. You can expect around 8 rainy days, with on average 1.9 inches / 48 mm of rain during the month.

Another way of looking at the rain is the number of sunny days. For Portimao Portugal, there are, on average 10 sunny days and 14 partly sunny days in March. That clearly shows that it is not raining all the time.

Is March the rainiest month in Portimao Portugal?

March is not the month with the most rainy days, and not the month with the most rain.

To answer what the rainiest month is in Portimao, we will both look at the month with the most rain, and the month with the highest number of rainy days.

December is the month with the the highest number of rainiest days. On average, you can expect 10 days with rain. July is the month with the lowest number of rainy days, with aproximately 1 day.

December is the month with the most rain. This is not equal as the one with the most rainy days. On average, you can expect 3.8 inches / 96 mm of rain. July is the month with the least amount of rain. This is not the same month as the one with the lowest number of rainy days. You can expect approximately 0.1 inches / 2 mm of rain.

Is March the most sunniest month in Portimao Portugal?

March is not the month with the most sunny days, not the month with the most partly sunny days, and it is not the month with the lowest number of overcast days.

To answer what the sunniest month is in Portimao, we will of course look at the month with the most sunniest days, but also look at the month with the biggest number of days that are sunny or partly sunny.

July is the month with the highest number of sunny days. On average, you can expect 10 sunny days, and 14 partly suny days. February is the month with the lowest number of sunny days.

July is the month with the highest number of sunny days and partly sunny days combined. While February is the month with the lowest number of sunny days and partly sunny days combined.

The last thing we will look at is the number of overcast days. July is the month with the lowest number of overcast days. While December is the month with the highest number of overcast days.

More information about Portimao Portugal

Weather in Portimao Portugal in other months

What to do in Portimao Portugal for each month

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