January weather forecast
Lisbon, Portugal

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The beautiful hillside city of Lisbon in Portugal, with a high, far view of the Sao Jorge Castle
The beautiful hillside city of Lisbon in Portugal, with a high, far view of the Sao Jorge Castle

Weather in January

Starting the year off, January in Lisbon, Portugal, typically experiences chillier temperatures, a cloudy sky, and frequent rainfall. This is the time when Lisbon sees the highest rainfall of the year, with an average of 100mm recorded. Although the days are shorter during this month, the sea still maintains a slightly mild temperature, which makes walks along the shore fairly pleasant. One can expect crisp mornings and cool evenings, with the conditions overall more suited to indoor activities. The UV index is at its lowest, indicating fewer daylight hours for sightseeing and outdoor activities.

Temperature

The coldest period is January, when temperatures fluctuate between an average high of 14.8°C and a low of 8.3°C.

Rainfall

In January, the rain falls for 14 days. Throughout January, 100mm of precipitation is accumulated. Throughout the year, there are 112 rainfall days, and 774mm of precipitation is accumulated.

Sea temperature

In Lisbon, Portugal, in January, the average water temperature is 15.8°C.
Note: Swimming in water that is 15.8°C is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 21°C to 15°C.

Daylight

In January, the average length of the day is 9h and 49min.
On the first day of the month, sunrise is at 07:54 and sunset at 17:25. On the last day of January, in Lisbon, sunrise is at 07:43 and sunset at 17:56 WET.

Sunshine

January, February, November and December, with an average of 5h of sunshine, are months with the least sunshine in Lisbon.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Lisbon. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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FAQ

What time of the year is the coldest in Lisbon?

In Lisbon, Portugal, the average lowest temperatures are observed in January, with a high of 14.8°C and a low of 8.3°C.

What is the average January temperature in Lisbon?

January temperatures in Lisbon vary between a high-temperature of 14.8°C and a low-temperature of 8.3°C.

How much does it rain in Lisbon in January?

In January, in Lisbon, the rain falls for 14 days. Throughout January, 100mm of precipitation is accumulated.

How cold is the water in January in Lisbon?

In January, the average sea temperature in Lisbon, Portugal, is 15.8°C. For most, swimming in 15.8°C is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C to 15°C.

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

The average day length in January is 9h and 49min.

What time are sunrise and sunset in January in Lisbon?

In January, on the first day of the month, sunrise is at 07:54 and sunset at 17:25. On the last day of the month, in Lisbon, sunrise is at 07:43 and sunset at 17:56 WET.

What are the months with the least sunshine in Lisbon?

The months with the least sunshine in Lisbon are January, February, November and December, with an average of 5h of sunshine.

How many hours of sunshine does Lisbon have in January?

The average sunshine duration in January is 5h.

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

January and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in January in Lisbon?

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index

Average temperature in January
Lisbon, Portugal

Average temperature in January - Lisbon, Portugal
  • Average high temperature in January: 14.8°C

The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (14.8°C).

  • Average low temperature in January: 8.3°C

The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is January (8.3°C).

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Average rainfall in January
Lisbon, Portugal

Average rainfall in January - Lisbon, Portugal
  • Average rainfall in January: 99.9mm

The wettest month (with the highest rainfall) is November (127.6mm).
The driest month (with the least rainfall) is July (4.2mm).

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Average rainfall days in January
Lisbon, Portugal

Average rainfall days in January - Lisbon, Portugal
  • Average rainfall days in January: 14 days

The months with the highest number of rainy days are January, February and December (14 days).
The months with the least rainy days are July and August (2 days).

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Average sea temperature in January
Lisbon, Portugal

Average sea temperature in January - Lisbon, Portugal
  • Average sea temperature in January: 15.8°C

The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 5h

The months with the most sunshine are July and August (Average sunshine: 11h).
The months with the least sunshine are January, February, November and December (Average sunshine: 5h).

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Average UV index in January
Lisbon, Portugal

Average UV index in January - Lisbon, Portugal
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January and December (UV index 2).

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Lisbon, Portugal

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