January weather forecast
Rio Maior, Portugal

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Weather in January

January, the same as December, in Rio Maior, Portugal, is another refreshing winter month, with an average temperature fluctuating between 9.1°C (48.4°F) and 14°C (57.2°F).

Temperature

Rio Maior's coldest month, January, generally records average temperatures ranging from a high of 14°C (57.2°F) to a low of 9.1°C (48.4°F).

Humidity

With an average relative humidity of 79%, January is the most humid month in Rio Maior, Portugal.

Rainfall

In Rio Maior, during January, the rain falls for 12.2 days and regularly aggregates up to 18mm (0.71") of precipitation. In Rio Maior, during the entire year, the rain falls for 101.5 days and collects up to 168mm (6.61") of precipitation.

Daylight

In Rio Maior, the average length of the day in January is 9h and 46min.
On the first day of January in Rio Maior, sunrise is at 07:55 and sunset at 17:22. On the last day of the month, sunrise is at 07:43 and sunset at 17:54 WET.

Sunshine

The month with the least sunshine is January, with an average of 5.1h of sunshine.

UV index

January is the month with the lowest UV index in Rio Maior, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In January, the maximum UV index of 3 translates into these guidelines:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
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Frequently asked questions

What is the coldest month in Rio Maior?

January is the coldest month of the year, registering average temperatures as high as 14°C (57.2°F) and as low as 9.1°C (48.4°F).

What are January temperatures in Rio Maior?

The high-temperature, in January, in Rio Maior, records 14°C (57.2°F), while the low-temperature is 9.1°C (48.4°F).

What is the most humid month in Rio Maior?

January is the most humid month in Rio Maior, Portugal, with an average relative humidity of 79%.

What is the average humidity in January in Rio Maior?

The average relative humidity in January is 79%.

How much does it rain in Rio Maior in January?

In January, in Rio Maior, Portugal, the rain falls for 12.2 days. Throughout January, 18mm (0.71") of precipitation is accumulated.

What is the average length of the day in January in Rio Maior?

The average day length in January is 9h and 46min.

When is the sunrise / sunset in January in Rio Maior?

In January, on the first day of the month, sunrise is at 07:55 and sunset at 17:22. On the last day of the month, in Rio Maior, Portugal, sunrise is at 07:43 and sunset at 17:54 WET.

What is the month with the least sunshine in Rio Maior?

January has the least sunshine of the year in Rio Maior, Portugal, with an average of 5.1h of sunshine.

How long on average sun shines in January in Rio Maior?

The average sunshine duration in January is 5.1h.

When is the lowest UV index in Rio Maior?

With an average maximum UV index of 3, January is the month with the lowest UV index in Rio Maior, Portugal.

What is the UV index intensity in January in Rio Maior?

In Rio Maior, the average daily maximum UV index in January is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in January
Rio Maior, Portugal

Average temperature in January - Rio Maior, Portugal
  • Average high temperature in January: 14°C

The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in January: 9.1°C

The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).

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Average pressure in January
Rio Maior, Portugal

Average pressure in January - Rio Maior, Portugal
  • Average pressure in January: 1022.3mbar

The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

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Average wind speed in January
Rio Maior, Portugal

Average wind speed in January - Rio Maior, Portugal
  • Average wind speed in January: 16.6km/h

The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.5km/h).

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Average humidity in January
Rio Maior, Portugal

Average humidity in January - Rio Maior, Portugal
  • Average humidity in January: 79%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).

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Average rainfall in January
Rio Maior, Portugal

Average rainfall in January - Rio Maior, Portugal
  • Average rainfall in January: 18mm

The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).

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Average rainfall days in January
Rio Maior, Portugal

Average rainfall days in January - Rio Maior, Portugal
  • Average rainfall days in January: 12.2 days

The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).

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Average daylight in January /
Average sunshine in January
Rio Maior, Portugal

Average daylight in January / Average sunshine in January - Rio Maior, Portugal
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 5h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in January
Rio Maior, Portugal

Average sunshine days in January - Rio Maior, Portugal
  • Average sunshine days in January: 15.4 days

The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).

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Average UV index in January
Rio Maior, Portugal

Average UV index in January - Rio Maior, Portugal
  • Average UV index in January: 3

The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in January
Rio Maior, Portugal

Average cloud cover in January - Rio Maior, Portugal
  • Average cloud cover in January: 44

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 20).

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Average visibility in January
Rio Maior, Portugal

Average visibility in January - Rio Maior, Portugal
  • Average visibility in January: 10km

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

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Rio Maior, Portugal

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