April weather forecast
Porto Velho, Brazil

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Weather in April

April, the same as March, in Porto Velho, Brazil, is a hot autumn month, with temperature in the range of an average low of 22.1°C (71.8°F) and an average high of 30.7°C (87.3°F).

Temperature

The transition from March to April brings an average high-temperature of a still hot 30.7°C (87.3°F), barely different from March's 30°C (86°F). Porto Velho encounters an average low-temperature of 22.1°C (71.8°F) during April nights.

Heat index

The heat index value during April is estimated at a blistering 43°C (109.4°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
Understand that the heat index values take into account shaded locations and mild winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in April in Porto Velho is 88%.

Rainfall

In Porto Velho, in April, it is raining for 27.1 days, with typically 156mm (6.14") of accumulated precipitation. Throughout the year, there are 251.1 rainfall days, and 1471mm (57.91") of precipitation is accumulated.

Daylight

The average length of the day in April in Porto Velho is 11h and 55min.
On the first day of April in Porto Velho, sunrise is at 06:18 and sunset at 18:19. On the last day of the month, sunrise is at 06:18 and sunset at 18:06 -04.

Sunshine

In April, the average sunshine is 6.5h.

UV index

January through April and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 in April translates into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

How hot does it get in Porto Velho in April?

April temperatures in Porto Velho, Brazil, vary between a high-temperature of 30.7°C (87.3°F) and a low-temperature of 22.1°C (71.8°F). In April, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 43°C (109.4°F).

What is the average humidity in April in Porto Velho?

The average relative humidity in April in Porto Velho, Brazil, is 88%.

How many days does it rain in April in Porto Velho?

In Porto Velho, Brazil, in April, during 27.1 rainfall days, 156mm (6.14") of precipitation is typically accumulated.

What is the average length of the day in April in Porto Velho?

The average day length in April is 11h and 55min.

When is the sunrise / sunset in April in Porto Velho?

On the first day of April, sunrise is at 06:18 and sunset at 18:19. On the last day of the month, sunrise is at 06:18 and sunset at 18:06 -04.

How long on average sun shines in April in Porto Velho?

In Porto Velho, Brazil, the average sunshine duration in April is 6.5h.

When is the lowest UV index in Porto Velho?

The months with the lowest UV index in Porto Velho are January through April and December, with an average maximum UV index of 6.

What is the UV index reading in April in Porto Velho?

The average daily maximum UV index in April in Porto Velho is 6. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Porto Velho, Brazil

Average temperature in April - Porto Velho, Brazil
  • Average high temperature in April: 30.7°C

The warmest month (with the highest average high temperature) is September (36.6°C).
The month with the lowest average high temperature is February (29.3°C).

  • Average low temperature in April: 22.1°C

The month with the highest average low temperature is October (23.5°C).
The coldest month (with the lowest average low temperature) is July (20.3°C).

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Average pressure in April
Porto Velho, Brazil

Average pressure in April - Porto Velho, Brazil
  • Average pressure in April: 1010.7mbar

The months with the highest atmospheric pressure are June and July (1012.6mbar).
The month with the lowest atmospheric pressure is November (1008.1mbar).

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Average wind speed in April
Porto Velho, Brazil

Average wind speed in April - Porto Velho, Brazil
  • Average wind speed in April: 3.5km/h

The windiest month (with the highest average wind speed) is August (4.2km/h).
The calmest months (with the lowest average wind speed) are March and April (3.5km/h).

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Average humidity in April
Porto Velho, Brazil

Average humidity in April - Porto Velho, Brazil
  • Average humidity in April: 88%

The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is August (53%).

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Average rainfall in April
Porto Velho, Brazil

Average rainfall in April - Porto Velho, Brazil
  • Average rainfall in April: 156mm

The wettest month (with the highest rainfall) is January (242mm).
The driest month (with the least rainfall) is July (8mm).

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Average rainfall days in April
Porto Velho, Brazil

Average rainfall days in April - Porto Velho, Brazil
  • Average rainfall days in April: 27.1 days

The month with the highest number of rainy days is January (30.3 days).
The month with the least rainy days is July (5.8 days).

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Average daylight in April /
Average sunshine in April
Porto Velho, Brazil

Average daylight in April / Average sunshine in April - Porto Velho, Brazil
  • Average daylight in April: 11h and 5min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).

  • Average sunshine in April: 6h and 3min

The month with the most sunshine is October (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in April
Porto Velho, Brazil

Average sunshine days in April - Porto Velho, Brazil
  • Average sunshine days in April: 2.4 days

The month with the most sunshine days is July (24 days).
The month with the least sunshine days is January (0.4 days).

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Average UV index in April
Porto Velho, Brazil

Average UV index in April - Porto Velho, Brazil
  • Average UV index in April: 6

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

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Average cloud cover in April
Porto Velho, Brazil

Average cloud cover in April - Porto Velho, Brazil
  • Average cloud cover in April: 62

The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in April
Porto Velho, Brazil

Average visibility in April - Porto Velho, Brazil
  • Average visibility in April: 6km

The months with the highest visibility are August and September (10km).
The month with the lowest visibility is February (5km).

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Porto Velho, Brazil

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