January weather forecast
Olhão, Portugal

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Weather in January

January in Olhão, Portugal, heralds the start of the year with relatively mild weather. Compared to the adjoining December, this month sees a slight improvement in sunshine hours while transitioning from winter into the early phase of spring. The highest temperature on record comes in at 15.1°C (59.2°F), while the seaside city displays a median cloud coverage of 30%. Light to moderate rainfall might dampen outdoor plans, but the probability of showers diminishes as the month progresses. Boasting more daylight hours than the preceding December, January serves as an agreeable time for activities such as birdwatching and nature walks.

Temperature

The coldest month in Olhão is January, with an average high-temperature of 15.1°C (59.2°F) and an average low-temperature of 11.3°C (52.3°F).

Humidity

In Olhão, the average relative humidity in January is 73%.

Rainfall

In Olhão, during January, the rain falls for 5.5 days and regularly aggregates up to 10mm (0.39") of precipitation. Throughout the year, there are 54.1 rainfall days, and 109mm (4.29") of precipitation is accumulated.

Sea temperature

In Olhão, in January, the average water temperature is 16.4°C (61.5°F).
Note: For the majority, swimming in 16.4°C (61.5°F) does not offer a pleasant experience. Below 21°C (69.8°F), the difficulty in controlling breathing escalates.

Daylight

The average length of the day in January in Olhão is 9h and 58min.
On the first day of January, sunrise is at 07:44 and sunset at 17:24. On the last day of the month, sunrise is at 07:34 and sunset at 17:54 WET.

Sunshine

January has the least sunshine of the year in Olhão, with an average of 6.1h of sunshine.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 4 in January interprets into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
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Frequently asked questions

What month is the coldest in Olhão?

Olhão witnesses the coldest weather in January, with temperatures averaging a high of 15.1°C (59.2°F) and a low of 11.3°C (52.3°F).

What is the usual temperature for Olhão in January?

The high-temperature in Olhão, Portugal, during January is 15.1°C (59.2°F) and the low-temperature is 11.3°C (52.3°F).

What is the average humidity in January in Olhão?

In Olhão, the average relative humidity in January is 73%.

How many days does it rain in January in Olhão?

In Olhão, Portugal, in January, during 5.5 rainfall days, 10mm (0.39") of precipitation is typically accumulated.

What is the sea temperature in January in Olhão?

In Olhão, Portugal, in January, the average water temperature is 16.4°C (61.5°F). Swimming in 16.4°C (61.5°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the average length of the day in January in Olhão?

The average day length in January in Olhão is 9h and 58min.

When are sunrise and sunset in January in Olhão?

In January, on the first day of the month, sunrise is at 07:44 and sunset at 17:24. On the last day of the month, in Olhão, Portugal, sunrise is at 07:34 and sunset at 17:54 WET.

What is the month with the least sunshine in Olhão?

January has the least sunshine of the year in Olhão, Portugal, with an average of 6.1h of sunshine.

How many hours of sunshine does Olhão have in January?

In January, the average sunshine duration in Olhão, Portugal, is 6.1h.

What are the months with the lowest UV index in Olhão?

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Olhão, Portugal.

What is the UV index reading in January in Olhão?

The average daily maximum UV index in January in Olhão, Portugal, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.

Average temperature in January
Olhão, Portugal

Average temperature in January - Olhão, Portugal
  • Average high temperature in January: 15.1°C

The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (15.1°C).

  • Average low temperature in January: 11.3°C

The month with the highest average low temperature is August (20.8°C).
The coldest month (with the lowest average low temperature) is February (11.2°C).

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Average pressure in January
Olhão, Portugal

Average pressure in January - Olhão, Portugal
  • Average pressure in January: 1022.3mbar

The month with the highest atmospheric pressure is December (1022.5mbar).
The months with the lowest atmospheric pressure are April and August (1015.4mbar).

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Average wind speed in January
Olhão, Portugal

Average wind speed in January - Olhão, Portugal
  • Average wind speed in January: 17.8km/h

The windiest months (with the highest average wind speed) are February and March (19km/h).
The calmest month (with the lowest average wind speed) is September (12.7km/h).

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Average humidity in January
Olhão, Portugal

Average humidity in January - Olhão, Portugal
  • Average humidity in January: 73%

The month with the highest relative humidity is April (74%).
The month with the lowest relative humidity is August (62%).

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Average rainfall in January
Olhão, Portugal

Average rainfall in January - Olhão, Portugal
  • Average rainfall in January: 10mm

The wettest month (with the highest rainfall) is November (19mm).
The driest months (with the least rainfall) are June, July and August (1mm).

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Average rainfall days in January
Olhão, Portugal

Average rainfall days in January - Olhão, Portugal
  • Average rainfall days in January: 5.5 days

The month with the highest number of rainy days is April (8.2 days).
The month with the least rainy days is August (0.8 days).

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Average sea temperature in January
Olhão, Portugal

Average sea temperature in January - Olhão, Portugal
  • Average sea temperature in January: 16.4°C

The best month for swimming (with the highest average sea temperature) is August (22.1°C).
The coldest month (with the lowest average sea temperature) is March (15.9°C).

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Average daylight in January /
Average sunshine in January
Olhão, Portugal

Average daylight in January / Average sunshine in January - Olhão, Portugal
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 6h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

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Average sunshine days in January
Olhão, Portugal

Average sunshine days in January - Olhão, Portugal
  • Average sunshine days in January: 24.6 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is April (20.3 days).

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Average UV index in January
Olhão, Portugal

Average UV index in January - Olhão, Portugal
  • Average UV index in January: 4

The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in January
Olhão, Portugal

Average cloud cover in January - Olhão, Portugal
  • Average cloud cover in January: 30

The month with the most cloud cover is January (Cloud cover 30).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in January
Olhão, Portugal

Average visibility in January - Olhão, Portugal
  • Average visibility in January: 10km

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

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Olhão, Portugal

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