April weather forecast
São Mateus, Brazil

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Weather in April

April, like March, in São Mateus, Brazil, is a moderately hot autumn month, with an average temperature varying between 28.4°C (83.1°F) and 22.1°C (71.8°F).

Temperature

The beginning of April records an average high-temperature of a still warm 28.4°C (83.1°F), marking a negligible difference from March's 29.8°C (85.6°F). During April, the average low-temperature is recorded at an agreeable 22.1°C (71.8°F).

Heat index

During April, the heat index is appraised at a tropical 33°C (91.4°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

March, April, June, November and December, with an average relative humidity of 82%, are the most humid months.

Rainfall

In São Mateus, in April, during 19.3 rainfall days, 58mm (2.28") of precipitation is typically accumulated. Throughout the year, there are 194.6 rainfall days, and 770mm (30.31") of precipitation is accumulated.

Daylight

In April, the average length of the day in São Mateus is 11h and 40min.
On the first day of the month, sunrise is at 05:46 and sunset at 17:40. On the last day of April, in São Mateus, sunrise is at 05:53 and sunset at 17:19 -03.

Sunshine

In São Mateus, Brazil, the average sunshine in April is 7.9h.

UV index

The months with the lowest UV index are April through November, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 6 in April suggests the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Resources | Updated: Feb 2, 2024 | Published by: Weather Atlas

Frequently asked questions

How hot is it in São Mateus in April?

The high-temperature, in April, in São Mateus, records 28.4°C (83.1°F), while the low-temperature is 22.1°C (71.8°F). In April, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 33°C (91.4°F).

What are the most humid months in São Mateus?

The months with the highest humidity in São Mateus, Brazil, are March, April, June, November and December, with an average relative humidity of 82%.

What is the average humidity in April in São Mateus?

In April, the average relative humidity in São Mateus is 82%.

How many days does it rain in April in São Mateus?

In São Mateus, Brazil, in April, during 19.3 rainfall days, 58mm (2.28") of precipitation is typically accumulated.

What is the average length of the day in April in São Mateus?

The average day length in April in São Mateus, Brazil, is 11h and 40min.

When are sunrise and sunset in April in São Mateus?

On the first day of April, sunrise is at 05:46 and sunset at 17:40. On the last day of the month, sunrise is at 05:53 and sunset at 17:19 -03.

How long on average sun shines in April in São Mateus?

In April, the average sunshine duration in São Mateus is 7.9h.

What is the month with the lowest UV index in São Mateus?

The months with the lowest UV index in São Mateus are April through November, with an average maximum UV index of 6.

What is the UV index reading in April in São Mateus?

In April, the average daily maximum UV index in São Mateus is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.

Average temperature in April
São Mateus, Brazil

Average temperature in April - São Mateus, Brazil
  • Average high temperature in April: 28.4°C

The warmest month (with the highest average high temperature) is February (30.1°C).
The month with the lowest average high temperature is July (25.7°C).

  • Average low temperature in April: 22.1°C

The month with the highest average low temperature is February (23.2°C).
The coldest month (with the lowest average low temperature) is July (19.2°C).

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Average pressure in April
São Mateus, Brazil

Average pressure in April - São Mateus, Brazil
  • Average pressure in April: 1014.9mbar

The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1012.8mbar).

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Average wind speed in April
São Mateus, Brazil

Average wind speed in April - São Mateus, Brazil
  • Average wind speed in April: 9.7km/h

The windiest month (with the highest average wind speed) is October (13.2km/h).
The calmest month (with the lowest average wind speed) is April (9.7km/h).

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Average humidity in April
São Mateus, Brazil

Average humidity in April - São Mateus, Brazil
  • Average humidity in April: 82%

The months with the highest relative humidity are March, April, June, November and December (82%).
The month with the lowest relative humidity is September (76%).

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Average rainfall in April
São Mateus, Brazil

Average rainfall in April - São Mateus, Brazil
  • Average rainfall in April: 58mm

The wettest month (with the highest rainfall) is December (143mm).
The driest month (with the least rainfall) is September (17mm).

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Average rainfall days in April
São Mateus, Brazil

Average rainfall days in April - São Mateus, Brazil
  • Average rainfall days in April: 19.3 days

The month with the highest number of rainy days is March (20.7 days).
The month with the least rainy days is September (11.1 days).

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Average daylight in April /
Average sunshine in April
São Mateus, Brazil

Average daylight in April / Average sunshine in April - São Mateus, Brazil
  • Average daylight in April: 11h and 4min

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 0min).

  • Average sunshine in April: 7h and 5min

The month with the most sunshine is February (Average sunshine: 9h and 0min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).

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Average sunshine days in April
São Mateus, Brazil

Average sunshine days in April - São Mateus, Brazil
  • Average sunshine days in April: 9.4 days

The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (7.8 days).

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Average UV index in April
São Mateus, Brazil

Average UV index in April - São Mateus, Brazil
  • Average UV index in April: 6

The months with the highest UV index are January, February, March and December (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September, October and November (UV index 6).

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Average cloud cover in April
São Mateus, Brazil

Average cloud cover in April - São Mateus, Brazil
  • Average cloud cover in April: 42

The month with the most cloud cover is November (Cloud cover 52).
The month with the least cloud cover is February (Cloud cover 32).

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Average visibility in April
São Mateus, Brazil

Average visibility in April - São Mateus, Brazil
  • Average visibility in April: 9km

The months with the highest visibility are February, August, September and October (10km).
The months with the lowest visibility are January, March, April, May, June, July, November and December (9km).

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São Mateus, Brazil

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