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Contents
- The climate of Porto Santo Island
- The best time to visit Porto Santo Island
- The worst time to visit Porto Santo Island
- Spring weather in Porto Santo Island
- Summer weather in Porto Santo Island
- Autumn weather in Porto Santo Island
- Winter weather in Porto Santo Island
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average UV index
The scenic Praia Cabeco da Ponta, on the Porto Santo Island in Portugal
Climate and monthly weather forecast
The climate of Porto Santo Island
Porto Santo Island, situated off the southwestern coast of Portugal, has been classified under a warm-summer Mediterranean climate, or Csb according to the Köppen climate system. This climate characterization implies a pattern of cool, rainy winters and warm, dry summers. A detailed analysis of the provided climate data offers insights into the weather patterns throughout the year.
A central feature of Porto Santo Island's climate is its modest temperature variations. The island experiences an average high temperature range from 18°C (64.4°F) to 25.1°C (77.2°F). These highest temperatures occur from July to September. On the other hand, the low temperature averages from a mild 13.4°C (56.1°F) in February to a warm 21.8°C (71.2°F) between August and September.
Rainfall exhibits a clear seasonal pattern. Porto Santo Island receives the bulk of its 366mm (14.41") annual rainfall from November to February, with averages from 51mm (2.01") to 67mm (2.64"). Conversely, from May to September, the island gets minimal rainfall, with a single digit count of 2mm (0.08") to 6mm (0.24"). The relative humidity remains fairly constant throughout the year, mostly in the high 70s% range.
Porto Santo Island also enjoys ample sunshine hours, peaking at 8 hours per day in the summer months of July and August, and still providing a decent 5 hours during the winter. The ultraviolet (UV) index is highest from June to August, reaching up to 10, signalling a high risk of harm from unprotected sun exposure.
A central feature of Porto Santo Island's climate is its modest temperature variations. The island experiences an average high temperature range from 18°C (64.4°F) to 25.1°C (77.2°F). These highest temperatures occur from July to September. On the other hand, the low temperature averages from a mild 13.4°C (56.1°F) in February to a warm 21.8°C (71.2°F) between August and September.
Rainfall exhibits a clear seasonal pattern. Porto Santo Island receives the bulk of its 366mm (14.41") annual rainfall from November to February, with averages from 51mm (2.01") to 67mm (2.64"). Conversely, from May to September, the island gets minimal rainfall, with a single digit count of 2mm (0.08") to 6mm (0.24"). The relative humidity remains fairly constant throughout the year, mostly in the high 70s% range.
Porto Santo Island also enjoys ample sunshine hours, peaking at 8 hours per day in the summer months of July and August, and still providing a decent 5 hours during the winter. The ultraviolet (UV) index is highest from June to August, reaching up to 10, signalling a high risk of harm from unprotected sun exposure.
The best time to visit Porto Santo Island
The ideal period for visitors to Porto Santo Island is from May to September when the climate is most favourable. During these months, average high temperatures range from 20.6°C (69.1°F) to 25.1°C (77.2°F), accompanied by low rainfall, ample sunshine, and a pleasant sea temperature, which averages from 18.8°C (65.8°F) to 23.4°C (74.1°F). Tourists also get to enjoy more daylight hours. With the UV index reaching 10 in the mid-summer months, it is crucial to take precautions against sunburn and eye damage.
The worst time to visit Porto Santo Island
The less attractive period to visit Porto Santo Island would be from November to February. This period is characterized by the shortest daylight hours (10 to 10.5 hours), highest rainfall (from 51mm (2.01") to 67mm (2.64")), and lowest average sea temperatures (from 17.5°C (63.5°F) to 19.7°C (67.5°F)). Relative humidity also tends to be at its peak during these months.
Spring weather in Porto Santo Island
Spring in Porto Santo Island begins in March and ends in May. The weather during this period is characterized by slowly increasing temperatures, ranging from highs of 18.6°C (65.5°F) to 20.6°C (69.1°F) and lows from 13.6°C (56.5°F) to 15.4°C (59.7°F) on average. Rainfall tapers off from 44mm (1.73") in March to a minimal 14mm (0.55") by May. This time also sees an increase in daylight hours and UV index, indicative of the coming summer months.
Summer weather in Porto Santo Island
The summer months from June to August witness the warmest part of Porto Santo Island's climatic cycle. Daily high temperatures hover around a balmy 24°C (75.2°F) to 25.1°C (77.2°F) with corresponding low temperatures between 17.5°C (63.5°F) and 21.8°C (71.2°F). Rainfall is virtually non-existent during these months, peaking at a mere 6mm (0.24") in June. Daylight hours reach their zenith while UV index indicates extreme exposure risk.
Autumn weather in Porto Santo Island
Autumn in Porto Santo, spanning September to November, ushers in a decrease in temperatures, daylight, and UV index while witnessing a gradual increase in rainfall. The high temperature averages between 23.3°C (73.9°F) and 20.7°C (69.3°F), while the low averages from 21.8°C (71.2°F) to 16.5°C (61.7°F). The amount of rainfall escalates from 13mm (0.51") in September to 55mm (2.17") by November.
Winter weather in Porto Santo Island
Winter, from December to February, brings the coolest temperatures and highest rainfall. High temperatures range between 18.5°C (65.3°F) and 18°C (64.4°F), and lows vary from 14.6°C (58.3°F) to 13.4°C (56.1°F). With rainfall reaching up to 67mm (2.64") in December, this period is the wettest for the island. However, even in winter, porter Santo Island offers up to 5 hours of sunshine daily, and UV index readings are at their lowest.
Weather in January
The year kicks off in Porto Santo Island with consistent and mild weather, maintaining a relatively harmonious balance between the warm sea and cooler land temperatures. Despite being one of the colder months, the subtropical maritime climate is vastly different from harsh winter conditions found in more northern countries. Weather in January »
Weather in February
Shifting into February, Porto Santo Island experiences a slight dip in both temperature and rainfall compared to January. The pleasant weather continues with sunny days being more frequent and slightly warmer, providing ideal conditions for enjoying the outdoor scenery. Weather in February »
Weather in March
Porto Santo Island noticeably starts to warm up in March, a promising sign of the forthcoming spring. The increase in temperature is gradual and accommodating, allowing one to freely explore the island's beaches and hilltops. As the days grow longer, there are more ample opportunities to catch some rays and engage in water-based activities. Weather in March »
Weather in April
By April, spring is in full bloom on Porto Santo Island, coupled with warmer days and an escalation in daylight hours. The weather shifts into a more comfortable phase making it conducive for outdoor activities such as golf, hiking, biking or simply taking advantage of the burgeoning beach scene. Weather in April »
Weather in May
In May, Porto Santo Island experiences a significant jump in temperature to 20.6°C (69.1°F), making it one of the warmest months so far. The warming effect of the changing season makes its presence felt, inviting visitors to take a dip in the sea which also starts to warm up from 17.9°C (64.2°F) to 18.8°C (65.8°F). Weather in May »
Weather in June
June on Porto Santo Island is indicative of summer's arrival with a noticeable rise in temperature and sunshine, reaching a comforting equilibrium between warmth and humidity. Porto Santo Beach, being one of the largest sandy areas in the Atlantic, starts buzzing with eager sun-seekers. Weather in June »
Weather in July
July relishes the title of the warmest month in Porto Santo Island with land temperatures peaking to an average high of 24°C (75.2°F). Compared to the previous months, the island experiences more comfortable nightly temperatures, making July perfect for serene evening walks along the golden beaches. Weather in July »
Weather in August
August remains warm and inviting in Porto Santo Island, maintaining the trend of higher temperatures that started in July. The days are long and sunny with plenty of opportunities to engage in various beach activities or explore the vast island landscape. Weather in August »
Weather in September
Heading into September, Porto Santo Island begins its transition from the hot summer temperatures to the cooler autumn season. The weather remains pleasantly warm, but with a tangible lessening of the intense summer heat that characterized the previous months. Weather in September »
Weather in October
As October rolls in, a significant shift in Porto Santo Island's weather pattern can be perceived. Temperatures begin to reduce, signaling the onset of autumn, with conditions becoming noticeably cooler than the preceding few months. Weather in October »
Weather in November
November symbolizes an evident retreat of warmth on Porto Santo Island. As the gradual decrease in temperature persists, the island begins to display characteristic late-autumn weather conditions. The overall climate remains moderately warm, however, the drop in temperature can be openly felt during the night. Weather in November »
Weather in December
December ushers in the cooler season on Porto Santo Island with temperatures averaging between 14.6°C (58.3°F) to 18.5°C (65.3°F). Despite being one of the cooler months, daytime remains relatively warm, drawing one to enjoy the calming beach views. Weather in December »
Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Porto Santo Island?
With an average high-temperature of 18°C (64.4°F) and an average low-temperature of 13.8°C (56.8°F), January is the coldest month in Porto Santo Island.
What are the most humid months in Porto Santo Island?
January and February, with an average relative humidity of 78%, are most humid months in Porto Santo Island, Portugal.
What is the rainiest month in Porto Santo Island?
The month with the most rainfall in Porto Santo Island, Portugal, is January, when the rain falls for 13 days and typically aggregates up to 67mm (2.64") of precipitation.
How many days does it rain in Porto Santo Island?
Throughout the year, in Porto Santo Island, there are 97 rainfall days, and 382mm (15.04") of precipitation is accumulated.
What is the month with the least sunshine in Porto Santo Island?
The months with the least sunshine are January, February, November and December, with an average of 5h of sunshine.
What is the month with the lowest UV index in Porto Santo Island?
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Porto Santo Island.
What month is the sea coldest in Porto Santo Island?
The month with the coldest seawater in Porto Santo Island, Portugal, is March, with an average sea temperature of 17.5°C (63.5°F).
What is the least humid month in Porto Santo Island?
With an average relative humidity of 74%, April is the least humid month in Porto Santo Island, Portugal.
When are the longest days in Porto Santo Island?
With an average of 14h and 18min of daylight, June has the longest days of the year.
What are the months with the highest UV index in Porto Santo Island?
June and July, with an average maximum UV index of 10, are months with the highest UV index.
What is the driest month in Porto Santo Island?
The month with the least rainfall in Porto Santo Island, Portugal, is July, when the rain falls for 3 days and typically collects 2mm (0.08") of precipitation.
What is the month with the most sunshine in Porto Santo Island?
July and August, with an average of 8h of sunshine, are months with the most sunshine in Porto Santo Island, Portugal.
What is the warmest month in Porto Santo Island?
August and September in Porto Santo Island are characterised by peak temperatures, with an average high of 25.1°C (77.2°F).
When is the sea warmest in Porto Santo Island?
The month with the warmest seawater in Porto Santo Island, Portugal, is September, with an average sea temperature of 23.4°C (74.1°F).
When is Daylight Saving Time (DST) in Porto Santo Island?
On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Porto Santo Island, Portugal, and the time zone changes from WEST to WET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 01:00, and the time zone reverts from WET to WEST.
What is the month with the shortest days in Porto Santo Island?
With an average of 10h and 0min of daylight, December has the shortest days of the year in Porto Santo Island, Portugal.
Average temperature
Porto Santo Island, Portugal
The warmest months (with the highest average high temperature) are August and September (25.1°C).
The month with the lowest average high temperature is January (18°C).
The months with the highest average low temperature are August and September (21.8°C).
The coldest month (with the lowest average low temperature) is February (13.4°C).
Average humidity
Porto Santo Island, Portugal
The months with the highest relative humidity are January and February (78%).
The month with the lowest relative humidity is April (74%).
Average rainfall
Porto Santo Island, Portugal
The wettest month (with the highest rainfall) is January (67mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days
Porto Santo Island, Portugal
- Average rainfall days in January:
13 days - Average rainfall days in February:
11 days - Average rainfall days in March:
9 days - Average rainfall days in April:
7 days - Average rainfall days in May:
5 days - Average rainfall days in June:
4 days
- Average rainfall days in July:
3 days - Average rainfall days in August:
3 days - Average rainfall days in September:
6 days - Average rainfall days in October:
10 days - Average rainfall days in November:
12 days - Average rainfall days in December:
14 days
The month with the highest number of rainy days is December (14 days).
The months with the least rainy days are July and August (3 days).
Average sea temperature
Porto Santo Island, Portugal
The best month for swimming (with the highest average sea temperature) is September (23.4°C).
The coldest month (with the lowest average sea temperature) is March (17.5°C).
Average daylight / Average sunshine
Porto Santo Island, Portugal
- Average daylight in January:
10h and 2min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
The months with the most sunshine are July and August (Average sunshine: 8h).
The months with the least sunshine are January, February, November and December (Average sunshine: 5h).
Average UV index
Porto Santo Island, Portugal
The months with the highest UV index are June and July (UV index 10).
The months with the lowest UV index are January and December (UV index 3).
