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April Weather in Sao Martinho do Porto, Portugal

Last updated: August 27, 2025

In April, the average temperature in Sao Martinho do Porto, Portugal hovers around 15°C (59°F), making it a pleasant time of year. Expect a minimum chill of 8°C (47°F) and a warm maximum of 25°C (77°F). With an average precipitation of 80 mm (3.1 in) spread over 12 days, you might want to keep an umbrella handy. The air is notably humid, with average humidity levels reaching 70%.

April Temperature in Sao Martinho do Porto

In April in Sao Martinho do Porto, the average temperature is 15°C (59°F). The maximum can reach 25°C (77°F), while the minimum can be as low as 8°C (47°F). This temperature range makes Sao Martinho do Porto a comfortable destination for travelers seeking mild weather.

April Weather in Sao Martinho do Porto: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sao Martinho do Porto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Martinho do Porto, April typically has an average temperature of 15°C (59°F), with highs reaching up to 25°C (77°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec545556586264676767645956
Data source: Temperature data for Sao Martinho do Porto generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Sao Martinho do Porto

In Sao Martinho do Porto in April, the total precipitation amount is 80 mm (3.1 in) spread over 12 days.

April Precipitation Trends in Sao Martinho do Porto

The chart displays monthly precipitation patterns in Sao Martinho do Porto, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Sao Martinho do Porto, April typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec50557480392412724699173
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sao Martinho do Porto

In Sao Martinho do Porto in April, humidity is 70%. With an average temperature of 15°C (59°F), this humidity feels like a warm embrace, making it slightly uncomfortable while traveling, as the moist air clings to your skin and can leave you feeling slightly lethargic.

April Average Humidity in Sao Martinho do Porto

This chart illustrates the average monthly humidity levels in Sao Martinho do Porto, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Sao Martinho do Porto is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sao Martinho do Porto

In Sao Martinho do Porto in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Sao Martinho do Porto.

Maximum UV Index Levels in Sao Martinho do Porto for April

The chart shows the monthly maximum UV Index (UVI) for Sao Martinho do Porto in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Sao Martinho do Porto typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699111098643
Data source: Sao Martinho do Porto April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Sao Martinho do Porto Compares to Other Months

Weather in Sao Martinho do Porto varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Sao Martinho do Porto, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sao Martinho do Porto, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)50 mm (2.0 inches)85%moderate
February Weather13°C (56°F)55 mm (2.1 inches)75%moderate
March Weather13°C (57°F)73 mm (2.9 inches)72%high
April Weather15°C (59°F)80 mm (3.1 inches)70%very high
May Weather17°C (63°F)39 mm (1.5 inches)70%very high
June Weather18°C (65°F)24 mm (1.0 inches)63%extreme
July Weather19°C (67°F)12 mm (0.5 inches)60%very high
August Weather20°C (68°F)7 mm (0.3 inches)60%very high
September Weather19°C (67°F)24 mm (1.0 inches)67%very high
October Weather18°C (64°F)69 mm (2.7 inches)74%high
November Weather15°C (59°F)91 mm (3.6 inches)83%moderate
December Weather13°C (56°F)73 mm (2.9 inches)85%moderate

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