30YearWeather
Lisbon in January
Lisbon weather in January - Portugal
🌤️Mild & Comfortable

Lisbon Weather in January

Plan your January trip to Lisbon, Portugal. Based on 30 years of NASA data, expect temperatures of 14°C (high) to 9°C (low), with 21% rain probability and 8 hours of daily sunshine. The Atlantic Ocean averages 15°C in January. Great conditions with only 3 rainy days expected.

Avg High
14°C

Hottest around day 1

Avg Low
9°C

Coolest around day 13

Rainy Days
3days

21% avg rain chance

Sunshine
8hrs/day

Winter season

Sea Temperature in January

Atlantic Ocean(Atlântico)

15°C

Monthly Average

Water Feel
💧Refreshing

Consider a wetsuit for extended swimming

Swim Rating
🏄Cool, wetsuits recommended

Based on average sea surface temperature

Body of Water
Atlantic Ocean

Atlântico

Lisbon coastline

Lisbon January Weather Calendar

Click any day to see detailed weather information

Travel Intelligence

Exclusive flight analytics & health data for Lisbon

Smart Flight Estimator

Airport-to-Airport Logistics

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Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub
100/ 100
Traffic Index

Extremely busy airport

Peak Daily Arrivals

0

slots per day

Peak

Sep

Low

Jan

Monthly Traffic Distribution

262
Jan
311
Feb
305
Mar
323
Apr
337
May
843
Jun
1238
Jul
1242
Aug
1253
Sep
1187
Oct
1041
Nov
720
Dec
Traffic Level
Low Season

Key Connections

Madrid Adolfo Suárez –Barajas (MAD)
Barcelona (BCN)
Paris Orly (ORY)
Funchal Madeira (FNC)
Porto Francisco de Sá Carneiro (OPO)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations
COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Portugal. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Portugal.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Portugal.If rabies exposures occur while in Portugal, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is January a Good Time to Visit Lisbon?

👌Good option with minor considerations
Short Answer

Don't expect beach weather in Lisbon's January: 15°C cold seas despite 14°C air temps. Coastal scenery remains beautiful, just pack warm layers.

Decision Factors

Vaccinations required

Yellow Fever

Very high humidity

82% average humidity

Rough sea conditions

1.66m average wave height - Fun Waves

Off-peak season - fewer crowds

Only 21% of peak - better deals and quiet crowds

Cold sea - swimming challenging

15°C sea temperature - Polar Plunge

Health precautions needed

Be aware of: Leptospirosis, Leishmaniasis, Zika

Good For

  • 💰
    Budget travelers

    Off-peak pricing with acceptable weather conditions

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 92/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🎯
    Adventure seekers

    1.66m waves - good for surfing and water sports

Who Should Avoid

  • 🏖️
    Beach lovers

    Sea temperature only 15°C - too cold for comfortable swimming

  • 👴
    Elderly travelers

    82% humidity creates difficult conditions

930 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Lisbon in January averages 14°C with 21% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Lisbon in January

What are the temperatures in Lisbon in January?

Daytime highs average 14°C, nights drop to 9°C. Temperatures remain fairly consistent.

How many rainy days in Lisbon in January?

Expect around 3 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Lisbon in January?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is January peak season in Lisbon?

This is shoulder season—moderate prices and manageable crowds.